All Questions
Tagged with everyday-life vision
43
questions
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1
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Is it possible to see thermal columns?
The most common way gliders gain altitude is to circle in a thermal. Thermals are often found below cumulus clouds, or above dark areas on the ground. Without these signs, they are harder to find and ...
- 111
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2
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129
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Why do I seem to see more depth in images when closing one eye?
I remember that when researching and learning about vanishing points and vantage points of art pieces, that by closing one eye and viewing a painting from an exact point in space, it would give this ...
- 103
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24
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Effects of chromatic aberration in the human eye
Due to metamerism, many different light spectra can be used to show a white colour.
If I understand it correctly, it is even possible to make white light by combining only two monochromatic light ...
4
votes
1
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70
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Absorption respose of cones in eye
I am trying to find information about the absorption response of the cones in the eye to different wavelengths of light. I have noticed two types of graphs and answers: one which shows the S-...
- 2,599
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156
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Do all objects we see emit light which then forms an image inside our eye?
Daily life we see so many objects .Often in textbooks the ray diagram for the image formation in eye is shown by showing light rays coming from the object and making an image in inner layer of eye . ...
- 512
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2
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134
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Why we can see cone of white light (not blue) from torch in night but not in day light?
Why we don't see blue colour when we look forward in a open ground, sunrays are there and gases are there. Then why it is not appearing blue like sky but white?
Also when I turn on a torch in day ...
user315475
1
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0
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63
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Astigmatism - streaks through light
Why do I see lines or streaks through light, say, for example, the headlights of a car? Is the eye defect curable? I usually don't see it during the day, unless I kinda partially close my eyes so that ...
0
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2
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146
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Why do sun glasses shield more sunlight from a specific angle?
I started recently wearing sunglasses during my online classes as laptop screens started taking a toll on my poor eyesight (of course my physics teacher wanted it removed but that's beside the point).
...
- 753
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3
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1k
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What is the pixel resolution of a human eye?
If it could be possible to build a camera inside a human brain that takes photos of what we see.
What would be the resolution of those images in terms of pixel count?
This question is not about ...
- 2,127
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1
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564
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Why is desaturated orange = brown, but desaturated blue is just plain blue? [duplicate]
As per wikipedia, "brown" refers to long wavelength hues, yellow, orange, or red, in combination with low luminance or saturation.
So what about the short wavelength hues? Is there any ...
- 1
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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
0
votes
1
answer
112
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Seeming darkness inside at dusk/dawn with lamps
My question is about a fairly common phenomenon related to light and vision.
When you are inside a room with lamps inside that also has windows,
your capacity to see well can depend on both the light ...
- 23
6
votes
3
answers
381
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Effect of layout on text visibility [closed]
My college recently switched to whiteboards. Though writing on a whiteboard with a black ink sounds similar to the conventional way of writing with white chalk on a blackboard, it feels very different....
- 12.5k
6
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1
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1k
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How do car rear-view mirrors work? [closed]
I wonder, how does a car rear-view mirror work?
When there is a car behind me with high-beam, all I do is flip a tong at the bottom of the mirror to relax the lights!
Are there two mirrors in it, ...
- 417
3
votes
1
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8k
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Why do my glasses make the ground look tilted?
I just started wearing glasses to correct my myopia today. I have -0.25 spherical and cylindrical power in my right eye and -0.5 spherical and -0.25 cylindrical in the left eye. Everytime I look at ...
