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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.
€ 56,90
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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.)
€ 51,80
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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.
€ 3,05
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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.
€ 8,50
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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.
€ 43,60
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DIFFERENTIAL PRESSURE DEMONSTRATION
661008
€ 45,50
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F211600
€ 7,79
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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.
€ 10,00
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NEWTON PENDULUM 14 X 18 CM
661020
€ 15,50
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DRINKING BIRD DELUX MODEL
661007
Once this timeless classic starts drinking he won't stop! Just put a glass of cold water in front of him, or her, dip Drinking Bird's head in the water and release it. Drinking Bird will bob back and forth while drinking away! It keeps bobbing and drinking for hours.
€ 29,50
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NITINOL ( SHAPE MEMORY ALLOY) STAR SHAPED
661017
€ 3,50
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MYSTERIOUS GLOWING BALL
661025
This unique ball is a fun way to demonstrate and discuss
persistence of vision. It can also be used to begin a unit
on light, color and vision.
When the ball is stationary, your students will observe a white
light but when the ball is in motion (in a darkened room), they
will see alternating red, blue, and green lights.
Whats going on?!
The three oscillating lights effectively demonstrate that white light is composed of colors
blending. Your students will be intrigued and eager to find out more.
€ 12,95
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THAMES - KOSMOS POWERHOUSE
660602
Human civilisations energy consumption is growing. At the same time, the harmful environmental impact of our energy usage is becoming apparent. A massive global effort to adopt renewable energy and use our resources more sustainably has begun.
To live sustainably, we must use Earths resources at a rate at which they can be replenished, and thus provide for future generations to live as we have. With this kit, you can learn about alternative energy and sustainable living by conducting 100 experiments and building energy-related models. Build the Power House and then conduct experiments in and around the house. Learn about energy-efficient construction materials and passive house design. Experiment with heating, cooling, conduction, convection, and insulation. Investigate Earths climate, the water cycle, and that inexhaustible power plant in the sky: the sun. Test passive solar collection methods with a solar collector. Hook up a photovoltaic solar panel to generate electricity from sunlight. Build wind turbines to extract energy from the wind. Construct a greenhouse and learn about the energy conservation tricks used by plants.
Power House provides a comprehensive overview of the many forms of alternative energy, and makes environmental protection and energy conservation issues tangible with hands-on models. The 64-page, full-colour experiment manual provides instructions, scientific explanations, and energy-saving tips.
€ 99,00
€ 127,00
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DOUBLE SIDED WORLD MAP POLITICAL AND PHYSICAL 120CM X 85CM
185129
also available in english
€ 19,95
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