When a hot body is placed in contact with a cooler body, heat is absorbed by the cooler body. The heat absorbed is measured in calories or joules. The calorie is the amount of heat necessary to raise the temperature of one gram of water by 1íC.

(1 calorie = 4.186 Joules)

Give and Take
Heat Rays & Light Rays
Hot Light
Low Frequency Light
Very Hot Small Sparks

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