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Germany XVII century two gentlemen chatting in a country guesthouse lounge near the fire
XVII century, Germany, comfortable parlor in a country tavern, fireside chat
XVII century home lifestyle, lady with servants and friends in the bedroom
XVII century, lady with friends, servant and children in the bedroom furnished by posted bed with fabric canopy, cradle and tiled stove as heating device
Physics: heat dilates air. Heating a glassball tube, air expands out of it as bubbles through water
Heating a glassball tube, the air contained in it expands out of it and forms bubbles through water.