Drinking Bird

Drinking Bird

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Item code
HL001601

Shows the cooling power of evaporation

$22.00 $20.00

Shows the cooling power of evaporation.  

When water evaporates from the fuzz on the birds head, the head is cooled. The temperature decrease in the head condenses the methylene chloride vapour, decreasing the vapour pressure in the head relative to the vapour pressure in the abdomen. The bird tips.