All Questions
Tagged with everyday-life diffraction
22
questions
2
votes
2
answers
102
views
Why do gaps in my blinds create multiple lines?
Multiple lines appear on my floor every morning from the gaps in my blinds.
Why does this happen and does it have to do with light being a wave, like in the double slit experiment? If so could it be ...
- 23
0
votes
0
answers
72
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Why does yellow light shining on the tv diffract all spectrum of light?
This was an image I took during the evening time on the led tv , I had two questions the first was why was the tv giving off a x pattern of the diffracted light which constitutes primary white light ...
- 648
0
votes
2
answers
71
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Stellate spikes around luminous objects
Why do bright objects feature a stellate around them (like in the lights on the bridges below)?
If this were due to scattering of light, I'd have expected it to be like a luminous sphere around rather ...
- 349
8
votes
2
answers
659
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Why does diffracted light in certain TVs get collimated in six straight or curved rays? [duplicate]
This evening, looking at the television in my apartment, I noticed that the light reflected on it manifested some kind of regular pattern. When the source of light is sufficiently far, this consists ...
- 81
22
votes
4
answers
2k
views
What is causing the diffraction pattern on my ceiling?
When I wake up in the morning and look at my curtains, I see a pattern on the ceiling made by the light going through the gap between my curtains. I have added a picture of it below. I remember from ...
- 437
15
votes
3
answers
790
views
Why do two blurry shadows, when brought close to each other, appear to "bulge" and merge?
I have recently noticed that when two objects with blurry shadows cast by the same light source are brought close to each other, their shadows appear to merge in a way where one shadow appears to &...
- 263
0
votes
0
answers
222
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Why do some kind of black bands or lines appear when I'm just about to touch two fingers ?There is a second question too [duplicate]
I don't know if I can explain this well. The effect is best visible when you keep your hand in front of a light source. When I'm almost about to touch any 2 fingers (assume between your thumb and ...
user248823
1
vote
1
answer
61
views
Direction field of light reflected on phone
When looking at my phone, a light from the roof caused my phone to reflect what appears to be a direction (slope) field, that of $y = x$.
Why specifically this pattern?
- 631
31
votes
3
answers
10k
views
Why does light reflected from an LED TV screen make a sharp X pattern?
If you shine a laser pointer or generally any coherent light at the screen of a fancy, new TV, you get a very sharp X pattern.
I think this is a property of LED screens specifically. This phenomenon ...
- 103k
0
votes
1
answer
313
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What was the rainbow like object I saw in ice crystals this morning?
This morning, while driving to work, I saw a rainbow-colored pillar formed by ice crystals frozen out of furnace exhaust from chimneys. It was very broad - a bit wider than my (large) hand at arms ...
0
votes
1
answer
92
views
Under a bright sun, can we see the shadow of an overhead power line on the floor?
I once asked this question a long time ago to my teacher. He did not have a definitive answer, but started by considering the sun rays as parallel, and offered diffraction as a component of the ...
- 925
4
votes
0
answers
502
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Explaining the diffraction pattern of a lightbulb filament
This really nice video from the Royal Institution channel on YouTube has a gorgeous shot of the diffraction pattern caused in laser-pointer light by the helically-coiled filament of a light bulb:
...
- 134k
2
votes
0
answers
192
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Why do we see vertical lines when we close our eyes into slits?
When we close our eyes into small slits and look at a light source we see vertical lines of light coming out. Why does this happen? Is it something to do with our eyelashes or is it because of ...
15
votes
1
answer
2k
views
What's the origin of the flattened X that appears when of a small (but powerfull enough) light is reflected in our non-powered TV screen?
The reflection of a small light (but with enough power) on our TV shows four emerging rays. The rays vary periodically in space and have a repeating pattern of the colors of the rainbow. The further ...
1
vote
1
answer
731
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Why light rays gets scattered when it enters a translucent window pane?
Consider the light source is the light post, outside the window of my house (Pic 1). When the rays from the light post enters through the window pane which is translucent gets scattered and forms a ...
- 1,273