Inside the glass is an orange solution of ethyl alcohol which has a low boiling point. Putting your hand one one side of the glass will cause the solution to evaporate and for the pressure to increase. This increase of pressure will cause the alcohol to flow to the other side of the glass.
(4C33.50) Pulse Glass
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Inside the glass is an orange solution of ethyl alcohol which has a low boiling point. Putting your hand one one side of the glass will cause the solution to evaporate and for the pressure to increase. This increase of pressure will cause the alcohol to flow to the other side of the glass.
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