All Questions
321
questions
4
votes
1
answer
3k
views
Why can't I see far when I look in a mirror?
I'm myopic.
It's a fact.
I understand exactly how it works because Internet told me light rays encounter themeselves too soon in my eyes... that is why I can't see far objects even if I see near ...
- 143
0
votes
3
answers
2k
views
Can reading glasses improve one's eyesight of objects lying in the long range?
Someone told me that reading glasses (a priori with a magnifying glass effect only) improve one's eyesight of objects lying in the long range distance. I am really sceptic about it since everything is ...
- 497
38
votes
1
answer
17k
views
Why can you see virtual images?
In optics it is widely mentioned real images are projectable onto screens whereas virtual ones can only be seen by a person. Isn't that contradictory? I mean in order to see the virtual image it has ...
- 1,297
27
votes
5
answers
16k
views
Eyes open under water
Yesterday I looked underwater with my eyes open (and no goggles) and I realized I can't see anything clearly. Everything looks very, very blurry. My guess is that the eye needs direct contact with air ...
- 3,930
2
votes
3
answers
11k
views
How do contact lenses work?
I understand how telescope, microscope and glasses work.
But how do contact lenses work?
- 5,637
35
votes
9
answers
17k
views
Is it possible to blur an image in such way that a person with sight problems could see it sharp?
If someone has short or long sight, is it possible to tune image on a computer monitor in such way, that a person could see it sharp as if they were wearing glasses? If not, will 3d monitor make it ...
- 1,445