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We have cars for earth, boats for water and planes for air. Nothing for fire. Not that I want to ride on fire.

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[-] partial_accumen@lemmy.world 2 points 1 year ago

We're in agreement on the physics of rocket propulsion. However, "fire" is essentially defined as a chemical oxidation reaction. The reaction itself doesn't have mass. While fuel and oxidizer undergo the oxidation reaction, it isn't the reaction itself providing the propulsion, its the mass and velocity of the combustion products.

This is why the "natural element" definition is old and out-of-date. Any discussion of "fire" as an element is a philosophical or literary exercise, not a scientific one.

[-] criitz@reddthat.com 4 points 1 year ago

I think you nailed it - fire is not analogous to earth, wind, and water (and heart), so the premise of the post is confounded.

[-] spittingimage@lemmy.world 2 points 1 year ago

I tried to imagine a vehicle for travelling on a surface of Heart, then decided I don't want to.

this post was submitted on 28 Sep 2023
100 points (89.7% liked)

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