Info

0460001198

Evangelista Torricelli inventing the mercury barometer, 1643. Torricelli (1608-1647) demonstrated that liquid will rise in a tube unless the weight of the column of liquid is equal to the pressure of the air pressing on an equal section of the reservoir of liquid. The height of a column will depend on the density of the liquid used. Thus a column of water would be 9.75m (32 feet), while that of mercury which is approximately 13.5 times denser, would be .736m (29 ins). From 'The Atmosphere', by Camille Flammarion. (London 1873).

Add to Cart
Filename
0460001198.jpg
Copyright
Irish Photo Archive
Image Size
3058x4500 / 3.9MB
Contained in galleries
Recently uploaded historical photos
Evangelista Torricelli inventing the mercury barometer, 1643. Torricelli (1608-1647) demonstrated that liquid will rise in a tube unless the weight of the column of liquid is equal to the pressure of the air pressing on an equal section of the reservoir of liquid. The height of a column will depend on the density of the liquid used. Thus a column of water would be 9.75m (32 feet), while that of mercury which is approximately 13.5 times denser, would be .736m (29 ins). From 'The Atmosphere', by Camille Flammarion. (London 1873).