this post was submitted on 13 Jul 2023
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[โ€“] julianh@lemm.ee 125 points 1 year ago* (last edited 1 year ago) (34 children)

Your car keys have better range if you press them to your head, since your skull will act as an antenna. It sounds like some made up pseudoscience that would never work in practice or have a negligible effect, but it actually works.

Edit: idk if it's actually because your skull acts as an antenna, although that's what I've heard. I looked it up and it seems like it's your head acting as a reasonance chamber. Since your body is conductive, your head can bounce and amplify the radio signal.

[โ€“] zephyr@lemmy.world 14 points 1 year ago (5 children)

Your skull acts as an antenna

How?

[โ€“] pturn1@lemmy.world 37 points 1 year ago

The tinfoil hat you're wearing amplifies the signal!

[โ€“] Ketchup@reddthat.com 18 points 1 year ago

Your skull is a parabolic reflector

[โ€“] buycurious@lemmy.world 16 points 1 year ago (1 children)

Iโ€™ve read two takes on this before:

  1. The cavity of your head helps project the signal to your car

  2. The water molecules in your head amplify the radio waves to reach your car

[โ€“] Barbacamanitu@lemmy.world 4 points 1 year ago

I can't imagine how water could amplify a signal. If anything, it's the reflector like shape of your skull.

[โ€“] Wander@yiffit.net 4 points 1 year ago

The way I do it is holding the bottom of the key under the soft part of the lower jaw while holding the mouth open as a resonance chamber.

[โ€“] buycurious@lemmy.world 2 points 1 year ago

Iโ€™ve read two takes on this before:

  1. The cavity of your head helps project the signal to your car

  2. The water molecules in your head amplify the radio waves to reach your car

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