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Doppler Effect (xkcd.com)

submitted 6 months ago by manucode@infosec.pub to c/comicstrips@lemmy.world

17 comments fedilink hide all child comments

The Doppler effect is a mysterious wavelength-shifting phenomenon which seems to primarily affect sirens, which is why the 🚨 emoji is red.

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[–] rockerface@lemm.ee 22 points 6 months ago (1 children)

Doppler effect is a thing for any waves. Light, sound, anything

[–] neo@feddit.de 8 points 6 months ago (1 children)

My understanding: light can best be described as an excitation of the electromagnetic field of spacetime. This excitation has a frequency, like an oscillation. Therefore light appears like a wave and we observe the Doppler effect. However, when interacting with other excitations, the "wave" collapses and behaves like a point like particle.

This applies not only to light, but to all known particles, e.g. the protons in your body. The only difference to photons are additional spacetime fields that are involved (like the Higgs field).

The weirdest part to me, is the collapse of the imaginary wave function and how it leads to ideas like "Many Worlds".

[–] NocturnalMorning@lemmy.world 4 points 6 months ago (2 children)

I always thought the observation collapse of the wave function thing was a little handwavey. I really don't have a resolution for it though, or an alternative.

[–] Serinus@lemmy.world 6 points 6 months ago

For anyone not familiar, look up the double wave experiment.

It's not a thing that should happen, but it clearly does.

[–] Azuth@lemmy.today 5 points 6 months ago

Neither does anyone really, it's a mystery physics has been trying to solve for the past 97 years.