50ohm goes brrrrrr

Comments

• marcos@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

  Just to point out, because it’s bothering me way more than it should…

  But the electric and magnetic peaks align with each other’s valleys, not with each other’s peaks.

  source

  • FishFace@piefed.social ⁨3⁩ ⁨weeks⁩ ago

    If two waves of the same frequency align with each others’ valleys, they align with each others’ peaks. Do you mean they should be aligned peak to valley? I don’t know how you’re deciding which direction of the axes is positive and which is negative though.

    source

    • ChaoticNeutralCzech@feddit.org ⁨3⁩ ⁨weeks⁩ ago

      [deleted]

      source

      • -> View More Comments
  • ChaoticNeutralCzech@feddit.org ⁨3⁩ ⁨weeks⁩ ago

    No, they fucking don’t

    en.wikipedia.org/wiki/Maxwell's_equations#Vacuum_…

    Image

    source
  • tate@lemmy.sdf.org ⁨3⁩ ⁨weeks⁩ ago

    You’re describing circular polarization. It’s not the only way.

    source
  • captainlezbian@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

    Yeah, because it’s not pulsing in intensity, it’s pulsing between which kind of energy it’s being

    source
  • mexicancartel@lemmy.dbzer0.com ⁨3⁩ ⁨weeks⁩ ago

    Well it’s wrong. I suppose you are thinking so because Maxwell’s equations shows B depending on (∆E/∆t)[i cant write \partial symbol], BUT remember LHS is not B but is curl(B) so derivative acts on both sides. So they are in phase and not 90° out of phase. So the peaks should align

    source
  • Techlos@lemmy.dbzer0.com ⁨3⁩ ⁨weeks⁩ ago

    Maybe it’s showing polarization superpositions of the E-field?

    source
• Remember_the_tooth@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

  I get the reference to the original meme. I don’t understand the EM spectrum component, though.

  source

  • deranger@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago

    They wish they were in an antenna and going out as radio waves, but instead they’re in a dummy load. 50ohm is a common antenna impedance.

    source

    • Remember_the_tooth@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

      Thanks. That puts me on the right track.

      onallbands.com/ham-radio-101-dummy-loads-smart-id…

      source
  • hedgehogging_the_bed@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

    Had to go get my radio-tech spouse. His reply “Oh, that’s the dumb name for a terminator…”

    Apparently “dummy load” isn’t what they call them in the USAF

    source

    • einfach_orangensaft@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago

      i might be wrong here but i think a dummy load is different from a terminator, they both 50 ohm, but a terminator is more like a connector cap, while a dummy load is designed to dissipate heat and can often take many watts of power over extended time without starting glow

      source

      • -> View More Comments
• BillyClark@piefed.social ⁨3⁩ ⁨weeks⁩ ago

  They can’t wait anyways because they do not experience the passage of time.

  source
• JackbyDev@programming.dev ⁨3⁩ ⁨weeks⁩ ago

  My reaction while reading this.

  Heathcliff in a ham helmet

  source