Paragone , 5 months ago This is right. Water or metal, take your pick: both massively-outperform air. Wikipedia often has speed-of-sound for elements, iirc… … glancing at this, now I think that hexagonal-diamond would be most-efficient & fastest… …wikipedia.org/…/Speeds_of_sound_of_the_elements Hexagonal-diamond is diamond, but with the carbon links in a different pattern. Apparently you make it either 1 of 2 ways: either alternate the orientation of layers of graphene, before compressing ( with explosives ) into diamond, or you put carbon into a meteor, & crash it into a planet or something. IOW, it forms about 60x as quick as normal-diamond, and takes insane pressure to do it. Normal diamond would probably be next on the scale. _ /\ _
This is right.
Water or metal, take your pick: both massively-outperform air.
Wikipedia often has speed-of-sound for elements, iirc…
…
glancing at this, now I think that hexagonal-diamond would be most-efficient & fastest…
…wikipedia.org/…/Speeds_of_sound_of_the_elements
Hexagonal-diamond is diamond, but with the carbon links in a different pattern.
Apparently you make it either 1 of 2 ways:
either alternate the orientation of layers of graphene, before compressing ( with explosives ) into diamond,
or you put carbon into a meteor, & crash it into a planet or something.
IOW, it forms about 60x as quick as normal-diamond, and takes insane pressure to do it.
Normal diamond would probably be next on the scale.
_ /\ _