xkcd #3106: Farads

Title text:

‘This HAZMAT container contains radioactive material with activity of one becquerel.’ ‘So, like, a single banana slice?’

Transcript:

[Cueball holds a stick while talking with Megan and White Hat.]
Cueball: This stick is one meter long.
Megan: Cool.
White Hat: That’s a nice stick.

[Cueball holds a smallish rock.]
Cueball: This rock weighs one pound.
Megan: I’d believe it.
White Hat: Looks like a normal rock.

[Cueball holds a small battery.]
Cueball: This battery is one volt.
Megan: Seems fine.
White Hat: Might need a recharge.

[Cueball holds a capacitor while Megan and White Hat panic.]
Cueball: This capacitor is one farad.
Megan: Aaaaa! Be careful!!
White Hat: Put it down!!

Source: https://xkcd.com/3106/

explainxkcd for #3106

  • Ragnor
    link
    fedilink
    English
    112 days ago

    but you can calculate how much of the signal it lets through.

    Shouldn’t that be “noise” instead of “signal”?

    • AItoothbrush
      link
      fedilink
      English
      312 days ago

      I mean depends on the context, in the specific case which i was thinking of it is signal but usually its noise. I have mainly worked with ac and dc signal coupling so thats why both sre signals for me when i think if it.

      • Ragnor
        link
        fedilink
        English
        212 days ago

        That makes sense. In distortions for music instruments all of it is signal for instance. It’s just that sometimes you don’t want all of it because you want a specific sound to be produced.

        I’m most used to working with digital electronics with a crystal supplying the frequency, so for me anything that is above that frequency is noise.