Does this effect have a name? I'm specifically referencing the iridescent shapes to the lower left of the apple
My clear case against the glass back of my work phone creates this light effect, what am I looking at?
Does this effect have a name? I'm specifically referencing the iridescent shapes to the lower left of the apple
20 Comments
adam_y@lemmy.world · 91 pts · 10d
It's not moire...
These are Newtons rings, a different type of optical interference pattern.
It occurs when two transparent sources reflect light in contact.
You get it frequently when trying to scan transparencies using a flatbed scanner too.
Here: Newtons Rings Wikipedia
FUCKING_CUNO@lemmy.dbzer0.com · 20 pts · 10d
I think youre bang on with the Newtons Rings, thanks!
CmdrShepard49@sh.itjust.works · 9 pts · 10d
Amusing that this too involves an apple.
thenextguy@sh.itjust.works · 12 pts · 10d
When a grid's misaligned with another behinnd, that's a moiré
Onomatopoeia@lemmy.cafe · 12 pts · 10d
Incorrect, but I'm giving you the upvote for the lyrical answer
SaveTheTuaHawk@lemmy.ca · 6 pts · 10d
Moire patterns do not cause a prism effect with light.
prex@aussie.zone · 11 pts · 10d
Not a direct answer to your question but the same effect can be used to measure extremely flat objects. Its a pretty cool rabbit hole.
Lauchmelder@feddit.org · 9 pts · 10d
thin film interference
Swedneck@discuss.tchncs.de · 1 pts · 4d
not necessarily that specifically, but definitely some form of interference.
As another person pointed out the specific phenomenon is probably Newton's Rings.
JayleneSlide@lemmy.world · 7 pts · 10d
It's called
moiré, a form of interference pattern:https://en.wikipedia.org/wiki/Moir%C3%A9_patternEdit: not moirè, but rather a form of diffraction grating interference because of the minute differences in distance between the two surfaces.
It is also the why DVDs and CDs have rainbow reflections.
sunnie@slrpnk.net · 12 pts · 10d
CDs and DVDs have rainbow reflections because the “parallel” (parallel on the scale of the wavelength of light) rows of pits create a diffraction grating.
The rings in the picture are Newton’s Rings, as pointed out in comments. There are a different set of rings for each wavelength of light and since they don’t all line up you get this rainbow effect.
wioum@lemmy.world · 2 pts · 10d
A swole apple with a yoyo.
ndupont@lemmy.blahaj.zone · 1 pts · 10d
My first guess would be Fresnel diffraction, I guess because of the pattern
Lucidlethargy@sh.itjust.works · 1 pts · 10d
I wonder if it's a polarization effect. Look at it with polarized sunglasses on.
itchick2014@midwest.social · 0 pts · 10d
Moiré?
Kolanaki@pawb.social · -4 pts · 10d
Pretty sure it's the prism effect.
Krusty@quokk.au · -7 pts · 10d
That's moire.
Literally: wavy visual pattern that happens when two different grid or line layers overlap, when a camera films a fine design, or in a special rippled fabric.
Dookieman12@piefed.social · -7 pts · 10d
I don't know what it's called, but I can tell you it's caused by air being trapped underneath the screen protector. Whoever put it on didn't know to start in the middle and apply pressure outward so you can wipe bubbles toward the edge to remove them.
Or, they were doing a hundred of them and knew they wouldn't have to look at any of them again, so they just threw it on there as fast as they could.
SaveTheTuaHawk@lemmy.ca · 8 pts · 10d
This happens with any layered glass with a change in refractive index, cause by a layer of plastic or glue. You can see this on car windows at the right angle because they are layered glass and plastic.
tyler@programming.dev · 2 pts · 10d
Read the title….