Provia 400X pushed to ISO 1600

[Matus Kalisky]

Now back onto mercury As any other material in liquid state it of course vaporizes even when far from boiling point. The warmer the faster though.

 

[Athiril]

So do some solids.

 

[Matus Kalisky]

So do some solids.

True, but as far as I know only when at given temperature and pressure there is direct transition from solid state to gas state.

 

[Athiril]

Many do it at room temp in open air.

 

[Matus Kalisky]

Many do it at room temp in open air.

Indeed - because for those these are the right conditions. For example is you put frozen C02 in room conditions it does not melt first and than evaporate - it sublimates, because liquid state of C02 only exists at pressures 5 times the normal pressure (at give temperature range only of course).

Don't we all love Wikipedia