Roses are red , roses are blue , depending on their velocity relative to you. amirite?

Roses are red, or are they? [Vsauce music plays] Hey vsauce Michael here, and in honor of Valentine's day, we're talking about roses. Now, as the proverbial poem goes, roses are red, but what is red? What even is color? Well color is merely our eyes' and brain's interpretation of photons with a specific frequency... *I had fun writing this and I think I'll compound on it later to make a complete copypasta*

by Anonymous 4 years ago

Ah, the Doppler effect. Same reason why sirens of emergency vehicles appear high pitched when moving towards you but lower pitch when moving away from you. It's due to the compression or stretching of sound waves in this case which is perceived as pitch. Interesting stuff indeed. In the case of light, red light has a longer wavelength than blue light. So when something moves away its light is red-shifted because the light waves coming from it are stretched out behind it due to its relative velocity from you. When it moves toward you the light waves compress so it is shifted towards the blue end of the spectrum.

by Anonymous 4 years ago

K just for fun lets say this hypothetical rose could get going fast enough to cause this blueshift.. how wrekt would we be if it grazed the atmosphere, and or straight hit the planet. Would the rose vaporize long before any damage was done or we looking at some sort of catastrophe?

by Anonymous 4 years ago

The rose would not make it through the atmosphere. A full blue shift from like 700nm wavelength light to 400nm would require absurd speeds, and the rose would at the very least burn itself up in the atmosphere

by Anonymous 4 years ago

The energy still gets dumped into the atmosphere, heating it up.

by Anonymous 4 years ago

Black holes also exhibit the Doppler effect

by Anonymous 4 years ago

The universe as well.

by Anonymous 4 years ago

Everything is every color ...isnt it? Just different values

by Anonymous 4 years ago

Color is not a physical property...only our observation changes

by Anonymous 4 years ago

Maybe???

by Anonymous 4 years ago

How much of observation is reality

by Anonymous 4 years ago

Oh that's how that works, i never really understood the doppler effect

by Anonymous 4 years ago

Thats what i came for. Thankyou

by Anonymous 4 years ago

Doppler effect also applies to light? Damn thats cool to know.

by Anonymous 4 years ago

Could this be experienced in real life? I mean, is it possible to go fast enough on earth to get this affect in the visible spectrum?

by Anonymous 4 years ago

No. Not for a physical object that you can see right here on earth.

by Anonymous 4 years ago

Are you a physicist? This seems like something a physicist or an astronomer would think about. I'm here for it

by Anonymous 4 years ago

No, this is Patrick.

by Anonymous 4 years ago

Blueshift, redshift.

by Anonymous 4 years ago

One shift, two shift

by Anonymous 4 years ago

A shift, B shift

by Anonymous 4 years ago

Land shift, sea shift

by Anonymous 4 years ago

Nice.

by Anonymous 4 years ago

yes, I like, I find that funny, I will updoot.

by Anonymous 4 years ago

Truly clever... +1 for you.

by Anonymous 4 years ago

This. This I like. +1

by Anonymous 4 years ago

Bravo! I can't remember the last time I heard a good Doppler shift quip.

by Anonymous 4 years ago

Science baby

by Anonymous 4 years ago

super clever. take my updoot

by Anonymous 4 years ago

Although in order to cause a visible shift in spectrum (especially to blue) they would have to move so fast the air resistance would destroy them (yeah vacuum whatever), so let me ftfy: Roses are red, not really blue, in order for them to be, you would be too.

by Anonymous 4 years ago

Roses are red, Violets are.. VIOLET *dumb ass*

by Anonymous 4 years ago