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[-] chickenf622@sh.itjust.works 70 points 2 days ago

Is the cross section of a cone not a circle, or semi circle in this case since we only see part of the "cone"?

[-] mushroommunk@lemmy.today 40 points 2 days ago

This. We don't as people define a rainbow as the path of light or anything like that. We define a rainbow as a circle of colors in the sky. That's how language works.

[-] irish_link@lemmy.world 11 points 2 days ago

Right, your point is taken but the point is more to explain the full portion of the rainbow. Not just the section you see.

[-] FishFace@piefed.social 9 points 2 days ago

Every person sees a rainbow in a different location because rainbows are an optical phenomenon not a real object - in that sense rainbows are occupying the entire space, not just a cone even. The expansion is dumb.

[-] athatet@lemmy.zip 2 points 2 days ago

I watched Donald Duck in Mathmagic Land and you are right.

[-] Neptr@lemmy.blahaj.zone 2 points 2 days ago* (last edited 2 days ago)

There are gaps in between the rain drops which means we see other parts of the cone. Maybe?

[-] Smoogs@lemmy.world 15 points 2 days ago

I like how in the first image that guy is in an ‘absolutely pissed about it’ stance

[-] _stranger_@lemmy.world 21 points 2 days ago

Walks forever to find the end of the rainbow

End of rainbow was inside him the whole time

[-] baggachipz@sh.itjust.works 22 points 2 days ago

The pot of gold was inside us the whole time

[-] TheAsianDonKnots@lemmy.zip 10 points 2 days ago

All I’m hearn’ is something something something I oughta gut you like a pig. 🐷 🤟

[-] Monument@lemmy.sdf.org 13 points 2 days ago

My old apartment used to be set up in just such a way that after a midday shower, you would see a small Brocken Spectre’s centered around each of your eyes when you looked in the mirror. It was honestly kind of terrifying. The first time I noticed it, I wondered if I’d finally lost it.
Glowing circles around your black eyes in a fogged mirror.

I think that means I have the opposite of a pot of gold in me.

[-] emeralddawn45@lemmy.dbzer0.com 4 points 2 days ago

That sounds like something a leprechaun would say...

[-] PunnyName@lemmy.world 1 points 22 hours ago

Leprechaun propaganda to keep us poor.

[-] PM_ME_VINTAGE_30S@lemmy.sdf.org 16 points 2 days ago

Then why are we not calling it a raincone? 🤔

[-] Track_Shovel@slrpnk.net 4 points 2 days ago

If it freezes on the way down does it become a snowcone?

[-] Kolanaki@pawb.social 3 points 2 days ago

Even if it was a semi-circle, why would we call it a bow? It doesn't look like a bow for archery, a bow for music, or a bow for fashion. 🤷‍♂️

[-] Thorry@feddit.org 11 points 2 days ago

I think the use of the word bow for curve or bend was used before all of the uses you mention. It comes from the word used to describe something turning back or a person taking a bow or bowing down. Bow specifically meaning bend comes from the word bugan. Where the bow used in archery comes from the word boga.

All of these do have the same origin meaning bend or curve. Specifically a bend in a river or the action of bowing. I can't find definitively if these were once separate things or always the same word.

Note the use of "arch" in archery also meaning a curve.

[-] TheLeadenSea@sh.itjust.works 3 points 2 days ago

An archery bow is a semicircle

[-] FishFace@piefed.social 2 points 2 days ago

A violin bow is made from a curved piece of wood, the same as the weapon.

[-] ftbd@feddit.org 1 points 2 days ago

Yes, but curved does not mean circular. Do either bows have constant curvature?

[-] FishFace@piefed.social 2 points 2 days ago

OK? But we're not calling archery bows and violin bows circular; we're calling them bows i.e. curved. And we're calling the rainbow a bow, i.e. curved, which it is. Curved does not imply circular, but circular does imply curved.

Besides, I don't think the proto-indo-europeans were out there with calipers measuring the precise curvature of objects they decided to label with the *bheug- root.

[-] TubularTittyFrog@lemmy.world 4 points 2 days ago* (last edited 2 days ago)

I like being gay on the inside. It's really the only place I'm allowed to be gay.

[-] Etterra@discuss.online 5 points 2 days ago

My treasure is lifelong depression. Yay.

[-] PunnyName@lemmy.world 1 points 22 hours ago
[-] callyral@pawb.social 6 points 2 days ago

But why is it at that distance specifically? Can I get closer to a rainbow and see it become bigger? Why is there a 42° angle in the picture?

[-] Deme@sopuli.xyz 11 points 2 days ago* (last edited 2 days ago)

That's the angle at which light is reflected by water droplets. The drawing is incorrect in that the cone is horizontal while the light appears to come from a higher angle. The cone is always directly opposite to the direction of the light source. Here's a better drawing, with more reading about what exactly is going on.

[-] Kazumara@discuss.tchncs.de 1 points 2 days ago

So then the bottom middle picture in this post is also probably shopped?

[-] Deme@sopuli.xyz 1 points 2 days ago

Certainly, although it appears to depict the elusive 3rd order rainbow.

[-] Krauerking@lemy.lol 4 points 2 days ago

Shit, that's neat.

[-] xorollo@leminal.space 3 points 2 days ago

Why does it appear at the distance that it does?

[-] Royy@lemmy.world 7 points 2 days ago

Because that is where the water droplets are. If you mist a hose in front of you on a sunny day, you'll see the rainbow close.

[-] quediuspayu@lemmy.dbzer0.com 4 points 2 days ago

Look look! 42

[-] CForsyth@lemmy.ca 4 points 2 days ago

Now I need this for sun dogs.

[-] SCmSTR@lemmy.blahaj.zone 2 points 2 days ago

Some of us more than others.

_>

<_<

_>

[-] Chakravanti@monero.town 1 points 2 days ago

You like looking at that, I see.

[-] unemployedclaquer@sopuli.xyz 3 points 2 days ago

Once i was driving a rig through ohio eastbound and seen a rainbow ahead, and they're hard to predict with the untrained eye, but i said to myself, fuckin hilarious if i hit the end of the rainbow a couple miles west of Columbus.

And that is where i personally saw the end of a rainbow, like that spectral vision dropped into the middle of I-70, where traffic was fucked from collisions because people were you know

[-] DarrinBrunner@lemmy.world 3 points 2 days ago

If everyone is special, then no one is.

A rainbow is a participation award.

[-] Deme@sopuli.xyz 1 points 2 days ago

Interesting choice, including the 3rd order rainbow in the middle picture there...

[-] Tylerdurdon@lemmy.world 2 points 2 days ago

Awww, this just made all of the horrible things in the world disappear!

Nah, it didn't.

this post was submitted on 18 Feb 2026
741 points (98.6% liked)

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