this post was submitted on 07 Aug 2024
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Transcription:By Jesse Squire @tracksuperfan · 1h

If I did my math right, those starting block speakers made a difference last night.

Without them, Lyles would have been at a disadvantage of 0.008 sec — how long the sound of the pistol takes to travel from lane 4 (Thompson) to lane 7 (Lylesh).

He won by 0.005.

[A picture showing starting blocks on the track with runners' feet in them. Behind each starter block is a purple loudspeaker connected to wires leading out of frame.]

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[–] Zagorath@aussie.zone 41 points 3 months ago (2 children)

Nah, electricity operates at near the speed of light, so its difference even across an entire stadium is negligible.

But if it were significant, you'd want them wired in parallel with equal wire length to each speaker, even though the closer ones don't need that much wire.

[–] TwilightKiddy@programming.dev 4 points 3 months ago

You'd also want your transmitter to be physically on equal distance from the speakers. You always get a bit of current via the electromagnetic field, and it spreads throughout anything, not just wires.

Well, it also depends on whether that little current is enough to make a sound that the runner would be able to hear.

[–] someguy3@lemmy.world 1 points 3 months ago* (last edited 3 months ago)

So he got the math wrong? Or rather used the wrong speed.

*Nvm I misread the original post.