Vietnam or Thailand ? Vote for the TOP Country of the Week !
Updated: June 1, 2025
Then a few turns of the thumb-screw bring the spring to bear upon the box, its walls expand until the pressure of the spring equals the pressure of the atmosphere, the reading is taken, and the instrument thrown out of operation again a most ingenious arrangement by which it was hoped to overcome some of the persistent faults of elastic-chamber barometers.
Word Of The Day
Others Looking