在试验大气压力灌水银入一端封闭的玻璃管时,因为管内空气不易排出,所以相当困难,我曾问过许多人,但没有较好的办法,都是差不多的,在灌入水银後用手上下振动玻璃管,或用一根细铁丝向下通,因此必须费很长的时间,才能把管内空气全部排出,尤其是倒转放入水银槽中时,一不小心,管内又进了空气,则又得费 When testing atmospheric pressure to pour silver into a closed glass tube at one end, it was rather difficult because the air in the tube was not easy to discharge. I have asked many people, but there is no better way, they are similar. Up and down the glass tube vibration, or down with a thin wire, it must take a very long time to discharge the tube all the air, especially when inverted into the mercury tank, accidentally, the tube into the air again, Then have to pay