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Post #2772785

2025-10-26 10:17 UTC

@altomare@oldbytes.space somewhere I read that if you scaled the read/write head up to the size of a jumbo jet, it would be doing Mach2, 2metres above the surface of a cornfield, counting individual stalks as it flew over.

Replies (2)

  • @mark@mastodon.fixermark.com 2025-10-26 17:03

    @grant_h@mastodon.social @altomare@oldbytes.space Relatedly: I love how physics does not scale like that. Some things in this universe are fractal: you look at them in the small and they recapitulate patterns in the large. Physics is not. What's going on at atomic scale is wildly different from what's going on at human-scale and that's wildly different from what's going on at planetary scale. Honestly, it's surprising there's as much similarity at the scale of a solar system and the scale of a galaxy as there is (and even there: all of a sudden dark matter and dark energy pop up).

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  • @aperture@snug.moe 2025-10-26 17:46

    @grant_h@mastodon.social @altomare@oldbytes.space while this may have been true at one point, i regret to inform you that - if a read/write head was the size of a jumbo jet - it would be moving at about mach 1953 [or around 0.22% the speed of light] about 4 thou [which is around the width of a human hair] above the platonic ideal of a cornfield with almost preciously equally tall corn proof is below [i hope i didnt screw up my math cause that would make me look silly] keep in mind in this scenario the plane is essentially the disk as it is the one generating the primary rotational movement, of course this would require you to imagine the entire cornfield moving any time we actually want to use the actuator arm [now the actuation field] so yeah ive not done the math on retro hardware but for modern hardware its a bit different -carrie

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