TLDR
Dear Editor:
Am very much puzzled by the several apparent mistakes in two of the stories in the April issue of Astounding Stories. In "The World Behind the Moon," Mr. Ernst makes an error so obvious that it almost makes me believe that it isn't an error. Like doing a math problem and finding it so easy that you're sure that you have it wrong. Anyway, here is my problem; this is taken verbatim from the story: "At two thousand miles from the Earth there had still been enough hydrogen traces in the ether to give purchase to the explosions of their water-motor." Does the author mean to say that the explosions of the tubes have to have something to push against to have any action? (a) Has it not been proven actually and mathematically that the explosions of rockets and expanding gases are even more powerful in space? The space ship in this story was equipped with both bow and stern tubes; why not fire them to slow the ship down instead of waiting to run into some resistance?via the TL;DR App
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