Show firt first thermometer the first thermometer was made lu 1621 by a dutch physicist named cor nellus van all ind and con consisted of a tube filled with aith ner clo cloird ed nt at its up per end and dipping nt at its other ex ti amity N malch mas N its open in a bottle of nitric I 1 t r ic acid diluted with nater milter As the rose or fell the air in the tube inert Inora md or gre less in volume find the liquid descended or rose 1 I lq Is instrument is if now knon ns as nil all air thermometer but its as its antio tie based on no ked principle it was of little use |