Brechner, Claude H., 1887- [from old catalog] · Boston, New York [etc.] Allyn and Bacon · leaf 24
s very loosely into the other, a wooden pail. (Figure 6.)The cream, with its other ingredients, is placed in the inner can, which, in turn, is placed in the wooden pail. Cracked ice, mixed with salt, is packed firmly around the can. Then the can iskept turning, so thatthe cream will not freezein… … Figure 7. — Photograph of an IceCream Freezer. 14 HEAT AND HEAT MEASUREMENT When pure ice melts, its temperature is 0° C. or 32° F., atemperature at which cream will not freeze. But whensalt is mixed with the ice, the freezing point is lowereduntil the temperature has been reduced several…
Physics
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