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Seconds

⁨740⁩ ⁨likes⁩

Submitted ⁨⁨8⁩ ⁨months⁩ ago⁩ by ⁨fossilesque@mander.xyz⁩ to ⁨science_memes@mander.xyz⁩

https://mander.xyz/pictrs/image/a128dc2f-35de-4a3a-8098-6ec11805536d.png

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Comments

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  • sharkfucker420@lemmy.ml ⁨8⁩ ⁨months⁩ ago

    Also angles

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    • mkwt@lemmy.world ⁨8⁩ ⁨months⁩ ago

      Set G = 1 and c =1. Then equations like r = 2m make dimensional sense.

      https://en.m.wikipedia.org/wiki/Geometrized_unit_system

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      • phdepressed@sh.itjust.works ⁨8⁩ ⁨months⁩ ago

        My brother, that explanation is not nearly dumbed down enough and as with most math wiki is useless for eli5 stuff.

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    • witty_username@feddit.nl ⁨8⁩ ⁨months⁩ ago

      m=E/c² ?

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  • Kowowow@lemmy.ca ⁨8⁩ ⁨months⁩ ago

    Angle: seconds

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    • thenextguy@lemmy.world ⁨8⁩ ⁨months⁩ ago

      Dessert: seconds

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      • SpaceNoodle@lemmy.world ⁨8⁩ ⁨months⁩ ago

        Motion: seconded

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  • Limonene@lemmy.world ⁨8⁩ ⁨months⁩ ago

    Rocket scientists be like:

    Fuel efficiency: seconds.

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  • Leate_Wonceslace@lemmy.dbzer0.com ⁨8⁩ ⁨months⁩ ago

    Wait, how do you measure mass in seconds?

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    • ScampiLover@lemmy.world ⁨8⁩ ⁨months⁩ ago

      Time taken for me to eat that mass of hotdogs

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      • Leate_Wonceslace@lemmy.dbzer0.com ⁨8⁩ ⁨months⁩ ago

        Choking_Hazard.txt

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    • GiveMemes@jlai.lu ⁨8⁩ ⁨months⁩ ago

      www.science.org/doi/10.1126/science.1232923

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    • reinei@lemmy.world ⁨8⁩ ⁨months⁩ ago

      Just as particle physicists measure everything in energy (eV to be precise…)

      Mass? eV Energy? eV Distance? 1/eV Time? Guess what: 1/eV as well! This also means velocity has unit 1…

      And the worst part: it turns out to be edtremely useful!

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  • uis@lemm.ee ⁨8⁩ ⁨months⁩ ago

    Mass in seconds? How? I get mass in Joules, but seconds?

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    • Eiri@lemmy.ca ⁨8⁩ ⁨months⁩ ago

      There are two possibilities:

      • Orbit duration can be used to calculate mass
      • The diameter of a star or the parallax distance on the sky (in arcseconds) can also be used to evaluate mass
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      • Lifter@discuss.tchncs.de ⁨8⁩ ⁨months⁩ ago

        Size doesn’t say much about mass though.

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    • SaharaMaleikuhm@feddit.org ⁨8⁩ ⁨months⁩ ago

      I measure the mass of my stool by seconds it takes to discharge

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    • HereIAm@lemmy.world ⁨8⁩ ⁨months⁩ ago

      Well the modern definition of a kg is based off of the second and the metre en.m.wikipedia.org/wiki/Kilogram :P

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    • Gonzako@lemmy.world ⁨8⁩ ⁨months⁩ ago

      The amount of time a mass M attracts a unitary sphere up into CoM.

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  • someguy3@lemmy.world ⁨8⁩ ⁨months⁩ ago

    Fun fact: Seconds are called seconds because the first breakdown of an hour is the minute, and the second breakdown is the second. Don’t ask me the obvious question(s) because I don’t know.

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    • f314@lemmy.world ⁨8⁩ ⁨months⁩ ago

      If by obvious question you mean “why is it called a minute,” that is because “minute” means “small.” So you have the first minute (small) division and the second minute division of the hour.

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  • ArbitraryValue@sh.itjust.works ⁨8⁩ ⁨months⁩ ago

    Why is the astrophysicist wearing gloves? Is he trying to dispose of a body?

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    • sleen@lemmy.zip ⁨8⁩ ⁨months⁩ ago

      You don’t want to know what an astrophysicist does in their free time.

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      • ArbitraryValue@sh.itjust.works ⁨8⁩ ⁨months⁩ ago

        Well the one I knew spent his free time doing community theater, having the women there all go crazy over him (he was good-looking and charming), and then not sleeping with any of them because he was a wait-until-marriage religious guy. I don’t think he was typical.

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  • IndiBrony@lemmy.world ⁨8⁩ ⁨months⁩ ago

    Me: not smart enough to understand

    Brain: Quick! Say something to sound like you fit in!

    Me: uh … I just did the Kessel Run in under 12 parsecs!

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    • fossilesque@mander.xyz ⁨8⁩ ⁨months⁩ ago

      But do you remember the Krebs Cycle?

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      • thenextguy@lemmy.world ⁨8⁩ ⁨months⁩ ago

        !i.ytimg.com/vi/27x0wiuTYoE/maxresdefault.jpg

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  • Sasha@lemmy.blahaj.zone ⁨8⁩ ⁨months⁩ ago

    As a theoretical physicist, units are for chumps

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    • qjkxbmwvz@startrek.website ⁨8⁩ ⁨months⁩ ago

      It’s easy to remember c and ℏ if they’re both 1…

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      • Sasha@lemmy.blahaj.zone ⁨8⁩ ⁨months⁩ ago

        Constance? Never heard of her

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    • LeFantome@programming.dev ⁨8⁩ ⁨months⁩ ago

      You must love Reynold’s Number:

      en.m.wikipedia.org/wiki/Reynolds_number

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      • Sasha@lemmy.blahaj.zone ⁨8⁩ ⁨months⁩ ago

        Oh god, no fluid mechanics is way too difficult. I stuck to studying quantum effects of black holes, which is much easier.

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  • observantTrapezium@lemmy.ca ⁨8⁩ ⁨months⁩ ago

    That may be relativists (they would actually measure anything in units of mass, with everything else defined through G = c = 1). Astrophysicists commonly measure mass in solar masses, long distances in parsec (or kiloparsec, megaparsec), short distances in solar radii or AU, and time in whatever is relevant to their problem (could be seconds or gigayears)

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    • Sconrad122@lemmy.world ⁨8⁩ ⁨months⁩ ago

      short distances in solar radii

      I think astrophycisists and I may have a difference of opinion on the meaning of the adjective short

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  • FiskFisk33@startrek.website ⁨8⁩ ⁨months⁩ ago

    angle: seconds

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    • uis@lemm.ee ⁨8⁩ ⁨months⁩ ago

      Rads. But radians are fine too.

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      • frezik@midwest.social ⁨8⁩ ⁨months⁩ ago

        Tau (τ). A full circle is just 1τ instead of 2π.

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  • umbrella@lemmy.ml ⁨8⁩ ⁨months⁩ ago

    all the same thing anyway

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  • montechristo@feddit.org ⁨8⁩ ⁨months⁩ ago

    If you ever find yourself among theoretical physicists and/or astrophysicists and need a conversation starter, just ask about unit systems or unit less/natural measurement systems. There is no other profession that is more obsessed about that topic.

    Just to put this here:

    ħ=1

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  • m0darn@lemmy.ca ⁨8⁩ ⁨months⁩ ago

    Don’t they measure distance and time by redshift (ie colour)

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    • Generous1146@beehaw.org ⁨8⁩ ⁨months⁩ ago

      What even is color if not seconds^-1?

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      • m0darn@lemmy.ca ⁨8⁩ ⁨months⁩ ago

        Yeah true, but I think they actually use wavelength of red shift, which is distance… traveled by light in the time it takes to make a full cycle. So I guess we’re back to seconds again.

        I think they use this for distance and time because at scales being dealt with they have the same implications.

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    • Allero@lemmy.today ⁨8⁩ ⁨months⁩ ago

      They normally use parallax-seconds, i.e. parsecs, for long distance objects.

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      • m0darn@lemmy.ca ⁨8⁩ ⁨months⁩ ago

        I think you need to be more specific than ‘long distance’, yes they use parsecs for ‘long distances’ but I believe only for intra-galactic objects. I think other galaxies are too distant for parallax seconds to be useful.

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  • EarthShipTechIntern@lemm.ee ⁨8⁩ ⁨months⁩ ago

    Please Sir, can I have some more?

    Lash him! Ridicule him! This boy wants seconds!

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  • LazaroFilm@lemmy.world ⁨8⁩ ⁨months⁩ ago

    Acceleration….

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    • SpaceNoodle@lemmy.world ⁨8⁩ ⁨months⁩ ago

      Sounds like that reduces to hertz, which I’m sure they’ll just express in seconds.

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      • tallricefarmer@sopuli.xyz ⁨8⁩ ⁨months⁩ ago

        They like to set the speed of light to be 1. That is dimensionless 1. It makes their calculations simpler this way instead of dragging some power of c everywhere like a loosely connected trailer on a dirt road.

        When i took a particle physics class we measured everything in energy (eV). In this case of measuring everything in seconds, acceration would be measured in units of 1/s

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  • Kolanaki@yiffit.net ⁨8⁩ ⁨months⁩ ago

    I know some people that should measure their weight in mass per second.

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  • 0x0@programming.dev ⁨8⁩ ⁨months⁩ ago

    Shouldn’t m = F/a so n/s^2?

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    • mvirts@lemmy.world ⁨8⁩ ⁨months⁩ ago

      E=mc^2 so m is joule seconds^2 / meter ^ 2

      F=ma so m is Newton seconds^2 / meter

      A joule is 1 Newton / meter so they agree

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      • zkfcfbzr@lemmy.world ⁨8⁩ ⁨months⁩ ago

        A joule is 1 Newton / second, but those units do still agree

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  • Hjalamanger@feddit.nu ⁨8⁩ ⁨months⁩ ago

    Can I get a conversation table?

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  • psme@lemmy.today ⁨8⁩ ⁨months⁩ ago

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    psme.me/pages/contact

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  • justme@lemmy.dbzer0.com ⁨8⁩ ⁨months⁩ ago

    I don’t know anybody using just seconds. I use natural units and my simulation buddies use their funny cgs units.

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