× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
r
4
L
4
3
d
3
M
3
l
3
V
3
s
3
d
3
a
3
g
3
j
3
New Topic  
smnam smnam
wrote...
Posts: 128
Rep: 2 0
11 years ago
Would you not be able to group a bunch of optics and arc them around an object to make it 'invisible'?
I'm sensing that this doesn't work since such a device doesn't exist but I don't understand why it shouldn't work.
Read 410 times
3 Replies

Related Topics

Replies
wrote...
11 years ago
Won't work on several levels.

First, your eye has a resolution of about a million pixels, so just to mask in one direction, you would need a million cables.

Second, that only works in that direction. Walk around the object by 90 degrees where you see the cables from the side, and the illusion is lost. In fact, move just a little and the illusion is lost, as you should see a different background, but you see the same one.

Third, the cables have to bow out to get around the object, and the sides would be visible where they bow out.

fourth, the transmission of light is not perfect, so the background would be dim and noticeable.

sixth, the pattern of the image from the cables would be noticeable. You would see artifacts.

.
smn
wrote...
11 years ago
In effect, you mean placing an image in front of it. Why bother when you can hang a picture in front of it?
wrote...
11 years ago
There's a guy at UCB who has managed to create a cloak using I believe nanoparticles or nano-mirrors to mask small objects (very small). Theoretically you need to bend light around an object and the amount of gravity needed to do that is immense.
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  2115 People Browsing
Related Images
  
 75
  
 542
  
 619