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Early_To_Risa@sh.itjust.works

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Anon invents a new way to travel (sh.itjust.works)

submitted 9 months ago by Early_To_Risa@sh.itjust.works to c/greentext@sh.itjust.works

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[–] carl_dungeon@lemmy.world 109 points 9 months ago (6 children)

This is dumb as shit. Hot air balloons only go so high, less than 70k feet according to records. They only stay aloft if the heat is continually applied, if not, air cools and they sink. They move with the air, and the air moves with the planet.

This doesn’t work for the same reason jumping in an airplane doesn’t slam you into the back wall.

[–] Willy@sh.itjust.works 28 points 9 months ago

I don't think it was posted because it was brilliant…

[–] 5714@lemmy.dbzer0.com 12 points 9 months ago (1 children)

70k ft: 21,336m

[–] prayer@lemmy.world 1 points 9 months ago

Sig figs!!

70k ft = 21 km

[–] starman2112@sh.itjust.works 9 points 9 months ago (1 children)

Ok but they're going really really high up

[–] echodot@feddit.uk 5 points 9 months ago

If you go much higher the balloon will leak heat through black body radiation faster than you'll be able to heat it. And even if you insulated the balloon in a way that didn't add too much weight you'd eventually get to the top of the atmosphere and hot air balloons won't go into space because they don't have any propulsion systems.

If you fill it with helium, it will go into space, and then it will immediately explode.

[–] hglman@lemmy.ml 3 points 9 months ago

Balloons using hydrogen can reach 33 miles. But even then the atmosphere still moves with the ground.

[–] MashedTech@lemmy.world 3 points 9 months ago

Yeah, but anon smart, u dumb. Checkmate.

[–] Corkyskog@sh.itjust.works 2 points 9 months ago (1 children)

World view reaches 100k feet.

[–] carl_dungeon@lemmy.world 1 points 9 months ago

Isn’t that helium though?