Eureka gadgets

STEEL SPHERE DENSITY KIT

661012

How are they the same?
How are they different?
One floats and one doesn't! Which is which?
Great for teaching the skills of observation and deduction! Although these two shiny, metal spheres have about the same mass, one has a diameter significantly smaller than the other, making their densities vastly different. Seeing the large one float in water seems unbelievable! Bowl not included.

AIRZOOKA

661011

his amazing device launches a powerful vortex of air up to 20 feet. Powerful enough to blow out a candle from across the room! Safe for classroom use because it launches no projectile, only a strong puff of air. The Air Zooka really will 'blow away' your students. Try it with our Diffusion Mist for vortices you can see! Easy to assemble and use. No batteries required. Colors may vary.

POLY DENSITY KIT

661005

When the 1L bottle is shaken, blue and white beads mix as expected. However, when allowed to settle, the beads separate, white at the top and blue at the bottom. Then, the two separated colored beads slowly come together in the center of the liquid. How often do you see something floating in the middle of the liquid? Great for illustrating so many concepts: solubility, density, miscibility, the salting out effect... Spontaneous order from disorder! Isn't this a violation of The Second Law?? (Rubbing alcohol not included.)

CELT - RATTLEBACK

455010

Celts are a must-have cool tools for any science classroom!

Celts are fun oval shaped objects that allow students to explore rotational inertia, center of gravity, point of contact, product of inertia, moment of inertia, and much more. Tap one end, and the Celt will mysteriously begin to spin. Spin the Celt clockwise, and it will reverse direction. The real fun comes when your students begin to search for an explanation to this surprising phenomenon.

FRUIT POTATO CLOCK

455011

To demonstrate the principle electrochemical cells. This digital clock runs on potatoes, oranges, plants, soda etc. The acid in the material reacts with the electrodes to produce low voltage current. You can experiment with different items to observe what happens. Color of the body may vary.

SHAPE MEMORY ALLOY (NITINOL) 45-46CM

455024

NITINOL PAPERCLIP NITINOL ( SHAPE MEMORY ALLOY) 3PCS

661002

Blue eloxed Nitinol paperclip ideal for experiments and amusement of your colleagues. Activation temperature 70°C. Length 30mm, width 15mm, wire diameter 1mm.

DENSITY CHALLENGE

661004

Using only table salt and water, students are asked to develop a method for separating this mixture of four different small plastic beads. Advanced students can continue on to determine the density of each different polymer! The materials in this separation lab can be used over and over again, and because only polymer materials are used, cleanup is easy. Complete teacher instructions provided. Includes 230 g (0.5 lb) of mixture, enough for a class of 24 students working in pairs. Beakers not included. Colors may vary.

DIFFERENTIAL PRESSURE DEMONSTRATION

661008

F211600

NITINOL PAPERCLIP NITINOL ( SHAPE MEMORY ALLOY) 1 PC

661003

Blue eloxed Nitinol paperclip ideal for experiments and amusement of your colleagues. Activation temperature 40-50°C. Length 30mm, width 15mm, wire diameter 1mm.

NITINOL ( SHAPE MEMORY ALLOY) TENSION SPRING 2 PCS

661013

The Nitinol tension spring can be deformed (up to about 15 cm length) when cold and will return to its original shape (2 cm long) at about 40-45°C. The spring has an outer diameter of 6.0 mm, the number of windings is 21, and the wire diameter is 0.75 mm.

NITINOL ( SHAPE MEMORY ALLOY) COMPRESSION SPRING 2 PCS

661014

The Nitinol tension spring can be deformed (up to about 15 cm length) when cold and will return to its original shape (2 cm long) at about 40-45°C. The spring has an outer diameter of 6.0 mm, the number of windings is 21, and the wire diameter is 0.75 mm.

NITINOL ( SHAPE MEMORY ALLOY) SPOOL 0,15MM 10 METER

661015

The nickel-titanium-copper (NiTiCu) wire with a wire diameter of 0.15 mm has an activation temperature of approximately 55-60 ° c. The thread length is 10 meters.

NITINOL ( SHAPE MEMORY ALLOY) SPOOL 0,50MM 5 METER

661016

The nickel-titanium-copper wire with a 0.50 mm wire diameter has an activation temperature of approximately 45-60 °c. The thread length is 5 meters.

DOUBLE SIDED WORLD MAP POLITICAL AND PHYSICAL 120CM X 85CM

185129

also available in english