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The Lounge
General Discussion
Thermal Tumbler and unusual noise....
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[QUOTE=".Scott, post: 5821061, member: 489053"] It's only a matter of degree (no pun intended). Before the vessel was resealed, it was open to the air and to convective circulation and cooling. The steam you saw was evidence of this. Warm moist air is less dense that cool dry air (yes, moisture makes air less dense). So as the moist air met the room air, it condensed and appeared as visible steam. When sealed, the air in the thermos may still have been warm and moist, but not at equilibrium with the thermos environment. [/QUOTE]
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General Discussion
Thermal Tumbler and unusual noise....
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