Page 12 - Demo

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HEAT & THERMODYNAMICS, continued
Linear Expansion Apparatus
Determine the coefficient of expansion
of four different metals. The dial indicator on this newly engineered linear expansion apparatus will provide more accurate and reproducible results than the old microme- ter form. This quality instrument is easy to set up, use and store. Includes an aluminum base and heating jacket with three nipples for water intake, outlet and thermometer. The apparatus comes complete with four different experimental rods and detailed instructions.
AP4679 I $302.70
Ice Melting Blocks
Touch the identical-looking blocks. One feels cold to the touch, the other feels warm. Which block melts the ice faster— cold or warm? The result is unexpected! The cold block melts the ice cube remark- ably faster than the warm block. How is
this possible? The cold block is a heat conductor. The warm block is an insulator. An unmistakable discrepant event that is sure to clarify the difference between a heat conductor and a heat insulator. Instructions provided. 10 x 10 cm.
AP6488 I $26.55
Hand Boiler
Amaze your students by having liquid boil with the touch of your hand. You can even perform a fractional distillation (instructions included). There is no end to the fun and learning with the Hand Boiler.
AP9293 I $8.25
Radiation Can Set
Dark surfaces absorb radiation more than light ones. Here’s an easy experiment to prove it. Just fill the two cans in this kit with room temperature water. Put thermometers in the holes in the tops, and heat the cans equally with an infrared lamp. The differ- ence in temperature rate increase will be dramatic. Except for their finish, these two cans are identical. One has a bright silver metallic finish, and the other is coated in dull black. The screw top makes water addi- tion and removal convenient. What happens if both cans are filled with very hot water?
AP5960 I $18.55
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Conduction, Convection and Radiation—Activity-Stations Kit
Discover the basic principles of heat transfer with four hands-on experiments:
• Test the thermal conductivity of materials and compare results with known quantities.
• Investigate how temperature affects the density of a liquid, and watch as convection currents are created.
• Observe the dramatic effects of convection currents in air on a lighted candle.
• Explore heat transfer through radiation by measuring the temperature increases for two
types of sand exposed to heat.
AP7183 I $76.85
FLINN SCIENTIFIC I HEAT & THERMODYNAMICS