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psud

@ psud @aussie.zone

Posts
17
Comments
2133
Joined
3 yr. ago

  • Fictional

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  • If you consider light in motion as a wave (as it is in EM models and I think also in current mainstream physics) then you can't expect it to work like matter. The speed of light is the speed at which EM waves propagate. Causality is the same because many interactions are mediated by exchange of photons via EM waves.

    The speed of light in aluminium is ~0.95c, the EM waves in an aluminium antenna aren't going to interact outside the aluminium faster than 0.95c. I would bet the effective speed of causality would never be greater than the speed of light in whatever medium the light is in

  • Fictional

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  • In radio electronics we abbreviate c to 300 000km/s (when working in kHz, different multipliers in other bands for easy maths). The number as it is is round enough when rounded to the whole hundred million for practical purposes with commodity hardware

    We could redefine the metre to be 1.00069229...x it's current size (increase it by 0.69229...mm) to make the speed of light exactly 300 000 000ms-1. This would also change area and volume, and any other units that are derived from length

  • Fictional

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  • Little c for speed of light in vacuum

  • Fictional

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  • Remember that light in motion is electric and magnetic fields pushing and pulling each other along. Why that speed? Because it takes time for an electric field to create a magnetic field and vice versa

    Our equations for EM waves (Maxwell's equations) predict light speed, and the same equations would predict c in any system, so long as reasonable values for the variables are known in that system

    So 300 000 000 m/s isn't going to be a reasonable approximation of the speed of light in vacuum, but any alien that one about radio would probably have Maxwell's equations under some other name

  • Ancient IBM wisdom (from 1979) that the bosses just straight up promptly forgot

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  • Sorry, typo. That was supposed to be "aren't" I didn't mean to wish obsolescence on you. Ed. No, I just phrased it confusing

  • I Assumed 'Twas The Boot Code

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  • It was the wondrous system "DOS 6.2"

  • Save the children!!!!!!!1

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  • On Wiktionary noun definition 4 for bug includes worm. It's an ancient word that has a variety of meanings, only one of which is the scientific definition. Does bug spray only kill insects in hemiptera? I thought it was mostly used on flies.

    https://en.wiktionary.org/wiki/bug

  • 2025-10-31

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  • My daughter born in 2001 got all the traditional fairy tales, wolf eaten grandmothers, murdered wives, witch eaten kids and all

    They're so much better stories than the modern sanitised ones

  • The Cyclist by Mohssin Amghar

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  • I see it as a shadow

  • Save the children!!!!!!!1

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  • From Wikipedia:

    First attested in this form around 1620 (referring to a “bedbug”), from earlier bugge (“beetle”), from Middle English bugge (“scarecrow, hobgoblin”)

    No way did it initially mean hemiptera, and it is awfully broad now, see https://en.wiktionary.org/wiki/bug noun def 4

  • Save the children!!!!!!!1

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  • Worms are bugs too. The word is incredibly broad. Just because science uses it narrowly doesn't make bug a word with a narrow meaning. Most of us aren't entomologists

  • Deleted

    The Session lately

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  • My 3.5 AC 20 monk was on his last hit point but as one of the two most competent holder backers still moved to the front

    I was looking forward to a dirt nap, but we won

  • This dance off is gonna hit you like

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  • Double post

  • California quietly kills e-bike voucher program, funnels funds into cars instead

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  • I ride a recumbent so stopping and chatting with other recumbent riders happens. One chap I chatted with had electrified his bike and was saying it was the only way he could still get out there and ride, the hills were too much for him otherwise. We're limited to 200W on a trigger operated e-bike here, so on most bikes that's just assist, so it's different to the American experience

  • Vienna's war on parking

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  • My nearest park and ride is full every working day even now when some 40 to 60% of people have access to work from home (most of the population work for the government here) the park and ride carpark used to overflow into the suburban shop carpark next to it

    Anyway it's full because parking there costs about $8 a day (in the form of a return bus ride), and parking in the city or the parliamentary triangle costs $15 or more

  • I just want to be a murder bird!

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  • I wouldn't want to be in my character's world, I'd want to be them here

  • I just want to be a murder bird!

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  • Mine does magic that would be useful in the real world. Much sadness I'm not them

  • Americans Are Defaulting on Car Loans at an Alarming Rate

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  • A few companies died, notably Enron

  • Goddamn it, Gary

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  • The problem most people have is the move that is impossible in a 3d Kline bottle - after you emerge from the orifice in the bottom you move onto the funnel, then into the bottle. You can only do that in 4d - or in experiential snapshots as you did. I'm sure there are animations that do it justice, but they would need to be 3d to do it well - it's hard to accurately represent 4d in 2d