Experimenten Hoger onderwijs

WARMTEBEELDCAMERA EDUCATION - INFRAROODCAMERA

FLIR-C2

Deze camera is een bijzonder krachtige en zelf kalibrerende warmte-camera, geschikt voor het zelfstandig doen van onderzoek in de vakken fysica, scheikunde, biologie en STEM

De kit bestaat uit:
" FLIR C2 camera
" Bevestigingsklem voor statief
" Research IR software
" Lesmateriaal

Nu binnen bereik onderwijs! Nu beschikbaar voor het onderwijs een bijzonder krachtige en zelf kalibrerende warmte camera.

De FLIR C2 is zeer aantrekkelijk geprijsd, speciaal voor het onderwijs. De FLIR C2 levert kwaliteit en duurzaamheid in een speciaal ontworpen kit voor het onderwijs.

De onderwijs set bevat:
" FLIR C2 camera
" Bevestiging klem voor een statief
" Research IR software
" Lesmateriaal.

Vele onderzoeken mogelijk

Leerlingen willen steeds meer en complexer onderzoek doen. De FLIR C2 is met zijn compacte en slanke vorm ideaal voor het doen van onderzoek op elke plek. Leerlingen kunnen zelfstandig onderzoek doen naar bijvoorbeeld isolatie, warmtestroom bij huizen en wrijvingswarmte.

Bij verschillende experimenten kan de wet van behoud van energie gecontroleerd worden. Een project naar energie en duurzaamheid wordt leerzamer doordat leerlingen stille verbruikers in huis gemakkelijk kunnen vinden.

Het opsporen van nachtdieren als biologisch onderzoek wordt eenvoudig met de FLIR C2. Met de FLIR C2 kan de activiteit van deze dieren geobserveerd worden.

Met de FLIR C2 kan ook basaal metabolisme gemeten worden. De FLIR C2 kan ingezet worden bij het doen van een CSI practicum waarbij leerlingen naast allerlei sporen ook kijken naar handafdrukken en afkoelende objecten.

Het verschil tussen endotherme en exotherme reacties wordt zeer duidelijk in beeld gebracht omdat het mogelijk is om real time te filmen (via USB) en dit te projecteren via een beamer.

MSX® real-­ time beeldverbetering en touchscreen
De FLIR C2 maakt gebruik van gepatenteerde MSX® real-­ time beeldverbetering en een helder, gebruiksvriendelijk touchscreen met automatische oriëntatie. Hiermee legt de camera warmtebeelden tot in het kleinste detail vast. MSX voegt belangrijke details (vastgelegd door de geïntegreerde zichtbare camera) toe aan de warmtebeelden van de C2. Hierdoor zijn cijfers, letters, structuren en andere kenmerken duidelijk zichtbaar, zonder dat de kwaliteit van het warmtebeeld eronder lijdt. De zeer gevoelige detector, met een resolutie van 4.800 pixels, maakt en toont beelden van subtiele warmtepatronen en kleine temperatuurverschillen, zodat experimenten zeer nauwkeurig gedaan kunnen worden.

IR foto en foto zichtbare gebied
De FLIR C2 maakt zowel een IR foto als een foto in het zichtbare gebied, zodat leerlingen eenvoudig verschillen en belangrijke gebieden kunnen vinden. Dankzij de eenvoudige bediening kan de camera JPEG's met één druk op de knop opslaan. De beelden kunnen later worden gedownload via de gratis FLIR Tools-­ software. De foto s kunnen daarna met ieder gewenste software bewerkt worden.


9 Hz Warmtebeeldcamera
Temperatuurmeetbereik-10° tot +150 °C
MSX-geoptimaliseerde warmtebeelden
Geïntegreerd LED-licht
Smal ontwerp geschikt voor elke tas
( 72001-0101 - FLIR C2 Warmtebeeldcamera)
Oud artikelnummer 835520

CHARACTERISTIC CURVES OF SEMICONDUCTORS WITH COBRA4 XPERT-LINK

PP2410964

Principle

Determine the current strength flowing through a semi-conducting diode. Determine the collector current with the collector voltage for various values of the base current intensity.

Benefits

Fast and easy experimenting
Get to know the behaviour of several types of semiconductors
Detailed experiment guide with extensive explanations and step-by-step instructions
Measure voltage and current simultaneously on four channels
Simplified implementation: all pre-settings already prepared
Further experiments in electricity and electronics can be performed with the equipment
Tasks

To investigate the dependence of the current strength flowing through a semi-conducting diode.
To determine the variations of the collector current with the collector voltage for varios values of the base current intensity.
What you can learn about

Semiconductor
P-n junction
Energy-band diagram
Acceptors
Donors
Valence band
Conduction band
Transistor
Operating point
Operating system-independent software included. Computer not provided.

SURFACE TENSION WITH THE RING METHOD (DU NOUY METHOD) - PHYWE - P2140500

PP2140500

The force is measured on a ring shortly before a liquid film tears using a torsion meter. The surface tension is calculated from the diameter of the ring and the tear-off force.

Tasks
1.Determine the surface tension of olive oil as a function of temperature.
2. Determine the surface tension of water/methanol mixtures as functions of the mixture ratio.

What you can learn about
Surface energy
Interface
Surface tension
Adhesion
Critical point
Eötvös equation

35750-95 Magnetic stirrer with heater MRHei-Tec 1x
02416-00 Torsion dynamometer, 0.01 N 1x
17547-00 Surface tension measuring ring 1x
37692-00 Retort stand, 210mm × 130mm, 500mm 1x
30008-50 Ethyl alcohol, absolute 500 ml 1x
02728-00 Water jet pump, plastic 1x
02040-55 Right angle clamp PHYWE 1x
36589-00 Pipette dish 1x
02022-20 Supp.rod stainl.st.,50cm,M10-thr. 1x
36592-00 Pipettor 1x
37715-00 Universal clamp 2x
36705-00 Stopcock,1-way,straight, glass 1x
31246-81 Water, distilled 5 l 1x
46245-00 Crystallizing dish, boro3.3, 900ml 2x
30177-10 Olive oil,pure 100 ml 5x
46244-00 Cristallizing dish,boro3.3, 500ml 2x
37697-00 Right angle clamp 2x
36701-64 Glass tubes,straight, 150 mm, 10 1x
36579-00 Volumetric pipette, 20 ml 1x
36629-00 Graduated cylinder 100 ml 1x
02412-00 Silk thread, l = 200 m 1x
36578-00 Volumetric pipette, 10 ml 1x
39296-00 Silicone tubing i.d. 7mm 2x
46299-02 Magnetic stirring bar 30 mm, cylindrical 1x

VOEDING VOOR SPECTRAALLAMPEN - U21905-230

1003196/3B

Designed for spectrum lamps U13030 to U13036, this operating unit has a robust metal housing with a tripod clamp attached to its rear. It is delivered complete with a lamp housing, fastening sleeve and tripod rod. The operating unit is connected via a 7-pin plug.

Specifications:

Output current: max. 1A via a 7-pin plug
Dimensions: 255 mm x 175 mm x 135 mm
Socket: Pico 9
Weight: 5.3 kg

DISPERSION AND RESOLVING POWER OF A GRATING SPECTROSCOPE - P2210301

PP2210301

Franck-Hertz experiment with a Hg tube - PHYWE - P2510311

PP2510311

Principle
Electrons are accelerated in a tube filled with mercury vapour. The excitation energy of mercury is determined from the distance between the equidistant minima of the electron current in a variable opposing electric field.

Benefits
Experience the essence of the Nobel Price: Franck, Hertz (1925)
Classical Version with Mercury (Hg)
One operating unit for 2 experiments (Hg, Ne)
Precise determination of electron excitation energy of Hg
Direct connection to computer, no extra interface necessary

Tasks
To record the countercurrent strength ™ in a Franck-Hertz tube as a function of the anode voltage U.
To determine the excitation energy E from the positions of the current strength minima or maxima by difference formation.

What you can learn about
Energy quantum
Electron collision
Excitation energy
Software included. Computer not provided.

Scope of supply
Franck-Hertz Hg-tube on plate 09105-10
Connecting cord for Franck-Hertz Hg-tube 09105-30
Franck-Hertz oven for Hg-tube 09105-93
Franck-Hertz control unit 09105-99
Thermocouple NiCr-Ni, -50..1100°C 13615-01
Software Measure Franck-Hertz experiment 14522-61
Data cable, plug/ socket, 9 pole 14602-00
Converter USB - RS232, active 14602-10
Screened cable, BNC, l = 750 mm 07542-11

LAWS OF COLLISION/ AIR TRACK (WITH COBRA3) - PHYWE - P2130511

PP2130511

Principle

The velocity of two gliders, moving without friction on an air-cushion track, are measured before and after collision, for both elastic and inelastic collision.

Tasks
"Elastic collision
1.A glider whose mass always remains unchanged collides with a second resting glider at a constant velocity. A measurement series, in which the velocities of the first glider before the collision and the velocities of both gliders after it are to be measured, is conducted by varying mass of the resting glider.


"Inelastic collision
1.A glider, whose mass always remains unchanged, collides with a constant velocitiy with a second resting glider. A measurement series with different masses of the resting glider is performed: the velocities of the first glider before the collision and those of both gliders, which have equal velocities, after it are to be measured.

What you can learn about
"conservation of momentum
"conservation of energy
"linear motion
"velocity
"elastic loss
"elastic collision
"inelastic collision

FERROMAGNETISM, PARAMAGNETISM AND DIAMAGNETISM

PP2430900

Principle
The aim of this experiment is to study the behaviour of nickel, tungsten, and bismuth rods in a strong, inhomogeneous magnetic field. This field is formed, for example, between cone-shaped pole pieces that sit on a permanent magnet.
The rods are suspended horizontally on a long and very thin silk thread so that they can move freely.

Benefits

Compact system to study the types of magnetism
Robust setup
Tasks

Study the behaviour of nickel, tungsten, and bismuth rods in a strong, inhomogeneous magnetic field.
What you can learn about

Ferromagnetism
Paramagnetism
Diagmagnetism
Magnetic field intensity

TLC DUNNELAAGCHROMATOGRAFIE PLAATJES SILICA - 25 STUKS

F889035

TLC dunnelaagchromatografie-plaatjes silicagel, 10 x 20 cm. Plaatjes kunnen gemakkelijk op maat gesneden kunnen worden. Gebruiksklare platen bekleed met 0,2 mm silica gel met een poriegrootte van 60Å met fluorescentie indicator, piekgevoelig bij 254 nm.
Per 25 stuks verpakt.

ELECTRIC FIELDS AND POTENTIALS IN THE PLATE CAPACITOR

PP2420100

Principle
A uniform electric field E is produced between the charged plates of a plate capacitor. The strength of the field is determined with the electric field strength meter, as a function of the plate spacing d and the voltage U. The potential ø within the field is measured with a potential measuring probe.

Benefits

Loss-less measurement of electric field strength
High-sensitive electric field meter also suitable for electrostatic measurement of voltages
Tasks

The relationship between voltage and electric field strength is investigated, with constant plate spacing.
The relationship between electric field strength and plate spacing is investigated, with constant voltage.
In the plate capacitor, the potential is measured with a probe, as a function of position.
What you can learn about

Capacitor
Electric field
Potential
Voltage
Equipotential lines

Wheatstone bridge - PHYWE - P2410200

PP2410200

Principle

The Wheatstone bridge circuit is used to determine unknown resistances. The total resistance of resistors connected in parallel and in series is measured.

Benefits

Highly precise and reproducible measurements possible
Many different measurement variations possible
Also suitable for measurement of low resistances
Tasks

Determination of unknown resistances.
Determination of the total resistance of resistors in series and of resistors in parallel.
What you can learn about

Kirchhoff's laws
Conductor
Circuit
Voltage
Resistance
Parallel connection
Series connection

Measurement of basic constants: length, weight and time - PHYWE - P2110100

PP2110100

Principle

Caliper gauges, micrometers and spherometers are used for the accurate measurement of lengths, thicknesses, diameters and curvatures. A mechanical balance is used for weight determinations, a decade counter is used for accurate time measurements. Measuring procedures, accuracy of measurement and reading accuracy are demonstrated.

Tasks

Determination of the volume of tubes with the caliper gauge.
Determination of the thickness of wires, cubes and plates with the micrometer.
Determination of the thickness of plates and the radius of curvature of watch glasses with the spherometer.

What you can learn about

Length
Diameter
Inside diameter thickness
Curvature
Vernier
Weight resolution
Time measurement

Newton's 2nd law/ air track - PHYWE - P2130301

PP2130301

Principle

According to Newton's 2nd law of motion for a mass point, the relationship between mass, acceleration and force are investigated.

Tasks

The distance-time law, the velocity time law and the relationship between mass, acceleration and force are determined.
The conservation of energy can be investigated.

What you can learn about

Linear motion
Velocity
Acceleration
Conservation of energy

Software included. Computer not provided.

Newton's 2nd law/ demonstration track - PHYWE - P2130305

PP2130305

Principle

The distance-time law, the velocity time law, and the relationship between mass, acceleration and force are determined with the aid of the demonstration track rail for uniformly accelerated motion in a straight line.

Tasks

Determination of:

Distance travelled as a function of time
Velocity as a function of time
Acceleration as a function of the accelerated mass
Acceleration as a function of force.

What you can learn about

Velocity
Acceleration
Force
Acceleration of gravity

Newton's 2nd law/ demonstration track with Cobra3 - PHYWE - P2130315

PP2130315

Projectile motion - PHYWE - P2131100

PP2131100

Principle

A steel ball is fired by a spring at different velocities and at different angles to the horizontal. The relationships between the range, the height of projection, the angle of inclination and the firing velocity are determined.

Tasks

To determine the range as a function of the angle of inclination.
To determine the maximum height of projection as a function of the angle of inclination.
To determine the (maximum) range as a function of the initial velocity.

What you can learn about

Trajectory parabola
Motion involving uniform acceleration
Ballistics

Recording paper, 1 roll,25 m 11221-01
Ballistic Unit 11229-10
Speed measuring attachment 11229-30
Power supply 5 VDC/2.4 A 13900-99
Barrel base PHYWE 02006-55
Two-tier platform support 02076-03
Steel ball, d = 19 mm 02502-01
Meter scale, demo. l=1000mm 03001-00

Ballistic pendulum - PHYWE - P2131200

PP2131200

Principle

A classic method of determining the velocity of a projectile is to shoot the projectile into a resting mass which is large compared to the projectile's mass and hung as a pendulum. In the process, the projectile remains in the pendulum mass and oscillates with it. This is an inelastic collision in which the momentum remains unchanged. If the pendulum's mechanical data are known, one can infer the velocity of the pendulum's mass (including the projectile's mass) at the lowest point of the pendulum's oscillation from the amplitude of the pendulum's oscillation. The momentum of the two masses in this phase of the oscillation must thus be equal to the impulse of the projectile before it struck the pendulum. If one knows the masses of the pendulum and the projectile, one can calculate the projectile's velocity. In order to be able to use this measuring principle without danger, the following set-up is used here: A steel ball is shot at the mass of a pendulum with the aid of a spring catapult. The pendulum mass has a hollow space in which the steel ball is held. If, additionally, two light barriers and a time measuring device are available, an independent, direct measurement of the initial velocity of the ball can be made.

Tasks

Measurement of the oscillation amplitudes of the ballistic pendulum after capturing the steel ball for the three possible tension energies of the throwing device.
Calculation of the initial velocities of the ball from the measured oscillation amplitudes and the mechanical data of the pendulum is performed using the approximation formula (3).
Plotting of the velocity v of the steel ball as a function of the maximum deflection; (0.90°) of the pendulum according to formula (3), taking into consideration the special mechanical data of the experiment.
Determination of the correction factor for the utilised pendulum for the conversion of the velocities determined by using the approximation formula into the values obtained from the exact theory. Correction of the velocity values from Tasks 2.5. If the supplementary devices for the direct measurement of the initial velocity are available, measure the initial velocities corresponding to the three tension steps of the throwing device by performing 10 measurements each with subsequent mean value calculation. Plot the measured points in the diagram from Task 3. Give reasons for contingent systematic deviations from the theoretical curve.

What you can learn about

Potential and kinetic energy
Rotational energy
Moment of inertia
Inelastic collision
Principle of conservation of momentum
Angular momentum
Measurement of projectile velocities

Ballistic Unit 11229-10
Ballistic Pendulum,f.Ballist.Unit 11229-20
Speed measuring attachment 11229-30
Power supply 5 VDC/2.4 A 13900-99
Steel ball, d = 19 mm 02502-01

Vapour pressure of water below 100°C - molar heat of vapori - PHYWE - P2340200

PP2340200

The vapour pressure of water in the range of 40 °C to 85 °C is investigated. It is shown that the Clausius-Clapeyron equation describes the relation between temperature and pressure in an adequate manner. An average value for the heat of vaporisation of water is determined.

Tasks

About 250 ml of demineralised water are allowed to boil for about 10 minutes to eliminate all traces of dissolved gas. The water is then cooled down to room temperature.
The 3-neck round flask is filled about three-quarters full with gas-free water and heated. At 35 °C the space above the water within the round flask is evacuated. Further heating causes an increase in pressure p and temperature T of water within the round flask. p and T are read in steps of 5 °C up to a maximum of T = 85 °C.

What you can learn about

Pressure
Temperature
Volume
Vaporization
Vapour pressure
Clausius-Clapeyron equation

Magnetic field of paired coils in a Helmholtz arrangement - PHYWE - P2430301

PP2430301

Principle

The spatial distribution of the field strength between a pair of coils in the Helmholtz arrangement is measured. The spacing at which a uniform magnetic field is produced is investigated and the superposition of the two individual fields to form the combined field of the pair of coils is demonstrated.

Tasks

To measure the magnetic flux density along the z-axis of the flat coils when the distance between them alpha = R(R = radius of the coils) and when it is larger and smaller than this.
To measure the spatial distribution of the magnetic flux density when the distance between coils alpha = R, using the rotational symmetry of the set-up: a) measurement of the axial component Bz; b) measurement of radial component Br.
To measure the radial components B´r and B"r of the two individual coils in the plane midway between them and to demonstrate the overlapping of the two fields at Br = 0.

What you can learn about

Maxwell's equations
Wire loop
Flat coils
Biot-Savart's law
Hall effect"

ALPHA ENERGIES OF DIFFERENT SOURCES WITH THE MULTI-CHANNEL - PHYWE - P2522015

PP2522015

An alpha-spectrometer, consisting of a photodetector, a preamplifier, a pulse height analyser and a recording device for registration of the spectra is calibrated by means of an open alpha-emitter of known alpha energy (241Am). The energy spectrum of a radium source which is in equilibrium with its decay products, is recorded and evaluated. The alpha-energies found in this way are allocated to the corresponding nuclides of the radium decay series.

Tasks

The Alpha-spectrum of the 226Ra is recorded with multichannel analyzer.
The calibration spectrum of the open 241Am alpha-emitter is recorded at the same settings.
The alpha-energies corresponding to the individual peaks of the alphaspectrum of the radium are calculated and compared to the values in the literature.

What you can learn about

Decay series
Radioactive equilibrium
Isotopic properties
Decay energy
Particle energy
Potential well model of the atomic nucleus
Tunnel effect
Geiger-Nuttal law
Semiconductor
Barrier layer

BUIS VAN QUINCKE -U8557190

1018475/3B

Quinckes resonance tube is used for demonstrating interference effects in standing sound waves. The equipment set consists of a resonance tube with a millimetre scale which is partially filled with water and is connected to an expansion vessel with a tube. The column of air above the water is excited to oscillate by using a tuning fork (or optionally a loudspeaker). By raising the expansion tank, the level of water inside the tube can be raised as well, which therefore reduces the height of the air column. The sound wave emitted by a sound source above the one open end of the tube is superimposed on the wave reflected from the surface of the water which results in constructive or destructive interference. Audible resonances occur when the length of the oscillating column of air is an odd integer multiple of a quarter wavelength of the sound.
Height of resonance tube: 1 m
Diameter of resonance tube: 3 cm
Scale: 98 cm
Divisions: 1 mm
Height of expansion vessel: 24 cm
Diameter of expansion vessel: 7 cm
Weight (without accessories and stands): 3.3 kg approx.

Contents:
1 Resonance tube with scale
1 Expansion vessel
1 Silicone tube
2 Horizontal clamps
1 Standard tuning fork, a1 = 440 Hz
1 Beater


Experiment Topics:
· Resonances in an oscillating column of air
· Standing sound waves
· Determination of wavelengths of sound waves in air
· Determination of speed of sound in air

DETERMINATION OF MOLAR MASSES VIA A MEASUREMENT OF THE BOILLING POINT ELEVATION (EBULLIOSCOPY)

PP1136000

EQUATION OF STATE FOR IDEAL GASES WITH COBRA4 - PHYWE - P2320160

PP2320160

The state of a gas is determined by temperature, pressure and amount of substance. For the limiting case of ideal gases, these state variables are linked via the general equation of state. For a change of state under isochoric conditions this equation becomes Amontons' law. In this experiment it is investigated whether Amontons' law is valid for a constant amount of gas (air).

Tasks

- For a constant amount of gas (air) investigate the correlation of
1. Volume and pressure at constant temperature (Boyle and Mariotte's law)
2. Volume and temperature at constant pressure (Gay-Lussac's law)
3. Pressue and temperature at constant volume (Charles' (Amontons' law))

- From the relationships obtained calculate the universal gas constant as well as the coefficient of thermal expansion, the coefficient of thermal tension, and the coefficient of cubic compressibility.

What you can learn about
- Thermal tension coefficient
- General equation of state for ideal gases
- Universal gas constant
- Amontons' law

Software included. Computer not provided.

NEWTON'S 2ND LAW/ DEMONSTRATION TRACK WITH COBRA4 - PHYWE - P2130360

PP2130360

Principle

According to Newton's 2nd law of motion for a mass point, the relationship between mass, acceleration and force are investigated.

Tasks
1.The distance-time law, the velocity time law and the relationship between mass, acceleration and force are determined.
2.The conservation of energy can be investigated.

What you can learn about
"Linear motion
"Velocity
"Acceleration
"Conservation of energy

Software included. Computer not provided.

NEWTON'S 2ND LAW/ AIR TRACK WITH COBRA4 - PHYWE - P2130363

PP2130363

Principle

According to Newton's 2nd law of motion for a mass point, the relationship between mass, acceleration and force are investigated.

Tasks
1.The distance-time law, the velocity time law and the relationship between mass, acceleration and force are determined.
2.The conservation of energy can be investigated.

What you can learn about
"Linear motion
"Velocity
"Acceleration
"Conservation of energy

Software included. Computer not provided.

NEWTON'S 2ND LAW/ DEMONSTRATION TRACK WITH MEASURE DYNAMICS - PHYWE - P2130380

PP2130380

Principle

A mass, which is connected to a cart via a silk thread, drops to the floor. The resulting motion of the cart will be recorded by way of a video camera and evaluated with the "measure Dynamics" software. The relationship between distance and time, velocity and time, and the relationship between mass, acceleration, and force will be determined for a uniformly accelerated
rectilinear motion with the aid of the demonstration track. In addition, the conversion of potential energy into kinetic energy will be represented graphically as well as by integrating the various forms of energy into the video in the form of bars.

Tasks
1.Determination of the distance covered as a function of time.
2.Determination of the velocity as a function of time.
3.Integration of the velocity into the video.
4.Graphical representation of the conversion of potential energy into kinetic energy while demonstrating the law of conservation of energy.
5.Integration of the potential, kinetic, and total energy into the video.

What you can learn about
"Linear motion
"Velocity
"Acceleration
"Conservation of energy
"Kinetic energy
"Potential energy

LAWS OF COLLISION/ DEMONSTRATION TRACK WITH A 4-4 TIMER - PHYWE - P2130505

PP2130505

Principle

The volocities of two gliders, moving without friction on a demonstration track, are measured before and after collision, for both elastic and inelastic collision.

Tasks

1. Elastic collision
1.The impulses of the two gliders as well as their sum after the collision. For comparison the mean value of the impulses of the first glider is entered as a horizontal line in the graph.
2.Their energies, in a manner analogous to Task 1.1
3.In accordance with the mean value of the measured impulse of the first glider before the collision, the theoretical values of the impulses for the two gliders are entered for a range of mass ratios from 0 to 3. For purposes of comparison the measuring points (see 1.1) are plotted in the graph.
4.In accordance with the mean value of the measured energy of the first glider before the collision, the theoretical values of the energy after the collision are plotted analogously to Task 1.3. In the process, the measured values are compared with the theoretical curves.

2. Inelastic collision
1.The impulse values are plotted as in Task 1.1.
2.The energy values are plotted as in Task 1.2.
3.The theoretical and measured impulse values are compared as in Task 1.3.
4.As in Task 1.4, the theoretical and measured energy values are compared. In order to clearly illustrate the energy loss and its dependence on the mass ratios, the theoretical functions of the total energy of both gliders and the energy loss after the collision are plotted.

What you can learn about
"Conservation of momentum
"Conservation of energy
"Linear motion
"Velocity
"Elastic loss
"Elastic collision

LAWS OF COLLISION/ DEMONSTRATION TRACK (WITH COBRA3)- PHYWE - P2130515

PP2130515

Prinzip

Die Geschwindigkeiten zweier Gleiter, die ohne Reibung auf einer Rollenfahrbahn bewegt werden, werden vor und nach einer Kollision, bei elastischer und inelastischer Kollision gemessen.

Aufgabe
"Elastische Kollision
1.Ein Gleiter, dessen Masse immer unverändert bleibt, kollidiert mit einem zweiten feststehenden Gleiter bei konstanter Geschwindigkeit. Eine Messserie, in welcher die Geschwindigkeiten des ersten Gleiters vor der Kollision und die Geschwindigkeiten beider Gleiter nach der Kollision gemessen werden, wird bei veränderten Massen des feststehenden Gleiters durchgeführt.
"Inelastische Kollision
1.Ein Gleiter, dessen Masse immer unverändert bleibt, kollidiert mit einem zweiten feststehenden Gleiter bei konstanter Geschwindigkeit. Eine Messserie mit verschiedenen Massen des feststehehnden Gleiters wird durchgeführt: die Geschwindigkeiten des ersten Gleiters vor der Kollision und die der beiden Gleiter, die nach der Kollision die gleiche Geschwindigkeit haben, sollen gemessen werden.

Lernziele
"Erhaltung der Dynamik
"Erhaltung der Energie
"Lineartechnik
"Geschwindigkeit
"elastischer Verlust
"elastische Kollision
"inelastische Kollision
(Bitte beachten: Versuchsbeschreibung ist nur in englischer Sprache erhältlich)

LAW OF COLLISION/ DEMONSTRATION TRACK WITH COBRA4 - PHYWE - P2130560

PP2130560

Principle

The velocity of two carts, moving without friction on a demonstration track, are measured before and after collision, for both elastic and inelastic collision.

Tasks
"Elastic collision
1.A cart whose mass always remains unchanged collides with a second resting cart at a constant velocity. A measurement series, in which the velocities of the first cart before the collision and the velocities of both carts after it are to be measured, is conducted by varying mass of the resting carts.
"Inelastic collision
1.A cart, whose mass always remains unchanged, collides with a constant velocitiy with a second resting cart. A measurement series with different masses of the resting cart is performed: the velocities of the first cart before the collision and those of both carts, which have equal velocities, after it are to be measured.

What you can learn about
"Conservation of momentum
"Conservation of energy
"Linear motion
"Velocity
"Elastic loss

LAWS OF COLLISION / AIR TRACK WITH COBRA4 - PHYWE P2130563

PP2130563

Principle

The velocity of two gliders, moving without friction on an air track, are measured before and after collision, for both elastic and inelastic collision.

Tasks
"Elastic collision
1.A glider whose mass always remains unchanged collides with a second resting glider at a constant velocity. A measurement series, in which the velocities of the first glider before the collision and the velocities of both gliders after it are to be measured, is conducted by varying mass of the resting glider.
"Inelastic collision
1.A glider, whose mass always remains unchanged, collides with a constant velocitiy with a second resting glider. A measurement series with different masses of the resting glider is performed: the velocities of the first glider before the collision and those of both gliders, which have equal velocities, after it are to be measured.

What you can learn about
"Conservation of momentum
"Conservation of energy
"Linear motion
"Velocity
"Elastic loss

LAWS OF COLLISION/ DEMONSTRATION TRACK WITH MEASURE DYNAMICSK - PHYWE P2130580

PP2130580

Principle

The velocities of two carts, moving on a demonstration track, are measured by way of the "measure Dynamics" software for a video analysis before and after their collision, for both an elastic and inelastic collision.

Tasks
"Elastic collision
1.
Graphical representation of the individual momentums of the two carts and of the total momentum. Integration of the value of the theoretical momentum into this diagram.

2.
Graphical representation of the energy values by applying the same procedure as for task 1.1.

3.
Integration of the momentum before and after the collision into the video.

4.
Integration of the energy before and after the collision into the video.



"Inelastic collision
1.
Graphical representation of the momentums in the same manner as in task 1.1.

2.
Graphical representation of the energy values by applying the same procedure as for task 1.2.

3.
Integration of the momentum into the video in the same manner as for task 1.3.

4.
Integration of the energy into the video in the same manner as for task 1.4.


What you can learn about
"Conservation of momentum
"Conservation of energy
"Linear motion
"Velocity
"Elastic loss
"Elastic collision
"Inelastic collision

FREE FALL WITH FALLING SPHERE APPARATUS - PHYWE - P2130701

PP2130701

Principle

A sphere falls freely over certain distances. The falling time is measured and evaluated from diagrams. The acceleration due to gravity can be determined.

Tasks
1.To determine the functional relationship between height of fall and falling time.
2.To determine the acceleration due to gravity.

What you can learn about
"Linear motion due to constant acceleration
"Laws of falling bodies
"Gravitational acceleration

FREE FALL WITH TIMER 2-1 - PHYWE - P2130702

PP2130702

Tasks 1.To determine the functional relationship between height of fall and falling time.
2.To determine the acceleration due to gravity.

Free fall, complete set (interface version with Cobra3) - PHYWE - P2130711

PP2130711

Principle

The fall times t are measured for different heights of fall h. h is represented as the function of t or t2, so the distance-time law of the free fall results as h = 1/2 · g · t2. Then the measured values are taken to determine the acceleration due to gravity g.

Tasks

Determination of
1.Distance time law for the free fall.
2.Velocity-time law for the free fall.
3.Precise measurement of the acceleration due to gravity for the free fall.

What you can learn about
"Linear motion due to constant acceleration
"Laws governing falling bodies
"Acceleration due to gravity

FREE FALL WITH COBRA4- PHYWE - P2130760

PP2130760

Principle

The fall times t are measured for different heights of fall h. h is represented as the function of t or t², so the distance-time law of the free fall results as h = 1/2 · g · t². Then the measured values are taken to determine the acceleration due to gravity g.

Tasks

Determination of
1.distance time law for the free fall,
2.velocity-time law for the free fall,
3.precise measurement of the acceleration due to gravity for the free fall.

What you can learn about
"Linear motion due to constant acceleration
"Laws governing falling bodies
"Acceleration due to gravity

Software included. Computer not provided.

FREE FALL WITH MEASURE DYNAMICS - PHYWE - P2130780

PP2130780

Principle

The aim of this experiment is to film a high-speed video of a sphere falling from the height of fall h. The "measure Dynamics" software is used for the graphical representation of the distance as a function of time t and also as a function of the square of
time t^2 as well as the graphical representation of the velocity v and acceleration a as a function of time t. Then, the measured values are used to determine the gravitational acceleration g.
The velocity and acceleration are then integrated into the video, followed by a discussion of the results.

Tasks
1.Determination of the gravitational acceleration by way of the distance-time law for the free fall.
2.Determination of the gravitational acceleration by way of the velocity-time law for the free fall.
3.Determination of the gravitational acceleration.
4.Integration of the velocity and acceleration into the video.

What you can learn about
"Linear motion due to constant acceleration
"Laws governing falling bodies
"Acceleration due to gravity

Determination of the gravitational constant/ computerised - PHYWE - P2130901

PP2130901

Principle

Two small lead spheres are positioned on a beam, which is freely suspended on a thin metal wire. At the beginning the large lead spheres are positioned symmetrically opposite to the small spheres in that way that the attractive forces are eliminated. There after, the large spheres are swung so that they are close to the small spheres. As a consequence of the gravitational attracting force the beam with the small spheres now moves in a new equilibrium position, where the attractive forces are equivalent to the force of the torsion of the wire. The gravitational constant can be determined from the new equilibrium position.

Tasks
1.Calibration of an angular detector.
2.Determination of the oscillation time of a free and damped oscillating torsion pendulum.
3.Determination of the gravitational constant.

What you can learn about
"Law of gravitation
"Free, damped, forced and torsional oscillations
"Moment of inertia of spheres and rods
"Steiner's theorem
"Shear modulus

PROJECTILE MOTION WITH MEASURE DYNAMICS - PHYWE - P2131180

PP2131180

Principle

A steel sphere is launched by a ballistic unit and the resulting trajectory is filmed with the aid of a video camera. The "measure Dynamics" software is used to demonstrate the dependence of the trajectory on the launching angle and on the initial velocity, and to determine the range and height of the trajectory. In addition, the resulting trajectory is integrated into the video, followed by a discussion of the course of the velocity.

Tasks
1.Determination of the trajectory.
2.Determination of the launching angle.
3.Determination of the initial velocity.
4.Determination of the range.
5.Determination of the maximum height.
6.Integration of the trajectory into the video.
7.Integration of the velocity vectors into the video.


What you can learn about
"Trajectory parabola
"Motion involving uniform acceleration
"Ballistics

Reversible pendulum - PHYWE - P2132200

PP2132200

Principle

By means of a reversible pendulum, terrestrial gravitational acceleration g may be determined from the period of oscillation of a physical pendulum, knowing neither the mass nor the moment of inertia of the latter.

Tasks
1.Measurement of the period for different axes of rotation.
2.Determination of terrestrial gravitational acceleration g.

What you can learn about
"Physical pendulum
"Moment of inertia
"Steiner's law
"Reduced length of pendulum
"Reversible pendulum
"Terrestrial gravitational acceleration

X - PHYWE - PX

PP9

MOMENTS - PHYWE - P2120100

PP2120100

Principle

Coplanar forces (weight, spring balance) act on the moments disc on either side of the pivot. In equilibrium, the moments are determined as a function of the magnitude and direction of the forces and of the reference point.

Tasks
1.Determination of the Moment as a function of the distance between the origin of the coordinates and the point of action of the force.
2.Determination of the Moment as a function of the angle between the force and the position vector to the point of action of the force.
3.Determination of the Moment as a function of the force.

What you can learn about
"Moments
"Couple
"Equilibrium
"Statics
"Lever
"Coplanar forces

MOMENT OF INERTIA AND ANGULAR ACCELERATION AND WITH AN AIR BEARING - PHYWE - P2131301

PP2131301

A moment acts on a body which can be rotated about a bearing without friction.The moment of inertia is determined from the angular acceleration.

Tasks

From the angular acceleration, the moment of inertia are determined as a function of the mass and of the distance from the axis of rotation:

of a disc,
of a bar,
of a mass point.

What you can learn about

Angular velocity
Rotary motion
Moment
Moment of inertia of a disc
Moment of inertia of a bar
Moment of inertia of a mass point

MOMENT OF INERTIA AND ANGULAR ACCELERATION WITH A PRECISION PIVOT BEARING - PHYWE - P2131305

PP2131305

Principle

A moment acts on a body which can be rotated about a bearing without friction. The moment of inertia is determined from the angular acceleration.

Tasks

From the angular acceleration, the moment of inertia is determined as a function of the mass and the distance from the axis of rotation
1.of a disc
2.of a bar
3.of a mass point

What you can learn about
"Angular velocity
"Rotary motion
"Moment
"Moment of inertia of a disc
"Moment of inertia of a bar
"Moment of inertia of a mass point

MOMENT OF INERTIA AND ANGULAR ACCELERATION WITH COBRA4 AND A PRECISION PIVOT BEARING - PHYWE - P2131

PP2131363

Principle

If a constant torque is applied to a body that rotates without friction around a fixed axis, the changing angle of rotation increases proportionally to the square of the time and the angular velocity proportional to the time.

Tasks
1.Measurement of the laws of angle and angular velocity according to time for an uniform rotation movement.
2.Measurement of the laws of angle and angular velocity according to time for an uniformly accelerated rotational movement.
3.Rotation angle; is proportional to the time t required for the rotation.

What you can learn about
"Angular velocity
"Rotation
"Moment
"Torque
"Moment of inertia
"Rotational energy

MOMENT AND ANGULAR MOMENTUM - PHYWE - P2131500

PP2131500

Principle

The angle of rotation and angular velocity are measured as a function of time on a body which is pivoted so as to rotate without friction and which is acted on by a moment. The angular acceleration is determined as a function of the moment.

Tasks

With uniformly accelerated rotary motion, the following will be determined:
1.the angle of rotation as a function of time,
2.the angular velocity as a function of time,
3.the angular acceleration as a function of time,
4.the angular acceleration as a function of the lever arm.

What you can learn about
"Circular motion
"Angular velocity
"Angular acceleration
"Moment of inertia
"Newton's laws
"Rotation

CENTRIFUGAL FORCE - PHYWE - P2131601

PP2131601

Principle

A body with variable mass moves on a circular path with adjustable radius and variable angular velocity. The centrifugal force of the body will be measured as a function of these parameters.

Tasks

Determination of the centrifugal force as a function
1.of the mass,
2.of the angular velocity,
3.of the distance from the axis of rotation to the centre of gravity of the car.

What you can learn about
"Centripetal force
"Rotary motion
"Angular velocity
"Apparent force

CENTRIFUGAL FORCE, COMPLETE SET (INTERFACE VERSION) - PHYWE - P2131611

PP2131611

Principle

A body with variable mass moves on a circular path with adjustable radius and variable angular velocity. The centrifugal force of the body will be measured as a function of these parameters.

Tasks

Determination of the centrifugal force as a function

1. of the mass,

2. of the angular velocity,

3. of the distance from the axis of rotation to the centre of gravity of the car.

What you can learn about
"Centrifugal force
" Centripetal force
" Rotary motion
" Angular velocity
" Apparent force

MECHANICAL CONSERVATION OF ENERGY/ MAXWELL'S WHEEL - PHYWE - P2131800

PP2131800

Principle

A disc, which can unroll with its axis on two cords, moves in the gravitational field. Potential energy, energy of translation and energy of rotation are converted into one another and are determined as a function of time.

Tasks

The moment of inertia of the Maxwell disc is determined. Using the Maxwell disc,
1.the potential energy,
2.the energy of translation,
3.the energy of rotation,

are determined as a function of time.

What you can learn about
"Maxwell disc
"Energy of translation
"Energy of rotation
"Potential energy
"Moment of inertia
"Angular velocity
"Angular acceleration
"Instantaneous velocity
"Gyroscope

MECHANICAL CONSERVATION OF ENERGY/ MAXWELL'S WHEEL WITH MEASURE DYNAMICS - PHYWE -P2131880

PP2131880

Principle

A wheel, which can unroll around its axis on two cords, moves a gravitational field. This process is filmed with a video camera. The potential energy, kinetic energy, and rotational energy are converted into one another and determined as a function of time with the aid of the "measure Dynamics" software.

Tasks
1.Determination of the moment of inertia of the Maxwell wheel by way of the distance-time relationship.
2.Determination of the moment of inertia of the Maxwell wheel by way of the velocity-time relationship.
3.Graphical representation of the potential energy, kinetic energy, and rotational energy as a function of time.

What you can learn about
"Maxwell disc
"Energy of translation
"Energy of rotation
"Potential energy
"Moment of inertia
"Angular velocity
"Angular acceleration
"Instantaneous velocity
"Gyroscope

LAWS OF GYROSCOPES/ 3-AXIS GYROSCOPE - PHYWE - P2131900

PP2131900

Principle

The momentum of inertia of the gyroscope is investigated by measuring the angular acceleration caused by torques of different known values. In this experiment, two of the axes of the gyroscope are fixed. The relationship between the precession frequency and the gyro-frequency of the gyroscope with 3 free axes is examined for torques of different values applied to the axis of rotation. If the axis of rotation of the force free gyroscope is slightly displaced, a nutation is induced. The nutation frequency will be investigated as a function of gyro frequency.

Tasks
1.Determination of the momentum of inertia of the gyroscope by measurement of the angular acceleration.
2.Determination of the momentum of inertia by measurement of the gyro-frequency and precession frequency.
3.Investigation of the relationship between precession and gyro-frequency and its dependence from torque.
4.Investigation of the relationship between nutation frequency and gyro-frequency.

What you can learn about
"Momentum of inertia
"Torque
"Angular momentum
"Precession
"Nutation