Tempertaure of liquid hydorgen (per a question from Wesley)
Wesley,
Liquid hydrogen typically has to be stored at 20o Kelvin or -253o C or -423 o F. Kelvin is a measure of absolute temperature where 0 degrees means no heat (therefore no atomic activity at all). You can’t ever get to absolute zero but you can get fairly close. The lowest temperature ever recorded on Earth (in Antarctica) was -89.2 o C. That is -129 o F.
Here is an interesting application of the washer problem. It is hard to store hydrogen as a liquid because it must be so cold (and also under pressure). You can also store the hydrogen as a gas in little tiny glass bubbles called microspheres. You put the hot microspheres in pressurized hydrogen, and the hydrogen gets inside of the glass. Then the glass cools off and shrinks and traps the hydrogen. Kind of cool.
- doug
Liquid hydrogen typically has to be stored at 20o Kelvin or -253o C or -423 o F. Kelvin is a measure of absolute temperature where 0 degrees means no heat (therefore no atomic activity at all). You can’t ever get to absolute zero but you can get fairly close. The lowest temperature ever recorded on Earth (in Antarctica) was -89.2 o C. That is -129 o F.
Here is an interesting application of the washer problem. It is hard to store hydrogen as a liquid because it must be so cold (and also under pressure). You can also store the hydrogen as a gas in little tiny glass bubbles called microspheres. You put the hot microspheres in pressurized hydrogen, and the hydrogen gets inside of the glass. Then the glass cools off and shrinks and traps the hydrogen. Kind of cool.
- doug