ok, so recently, i went into my brother's room in his new apartment. and on the wall there is a projection of whatever is going on outside, except it is shown upside down in negative tones. i thought this is a bit weird seeing that most of his window is covered up by a huge blanket, also, how is it that you can have a projection of the oustide onto the wall. and i don't mean there's shadows coming up on his wall, i mean there are detailed objects of cars parked outside and trees and people walking by the house. i'm just wondering how this is possible with just a window being covered up? and i know that with the old pinhole cameras they would show something upside down, but how can it be possible to project something outside into a room?
2007-06-14 10:45:43 · 4 answers · asked by prettypinayprincess05 1 in Science & Mathematics ➔ Alternative ➔ Other - Alternative
I think you may have already answered your own question.
The name camera comes from an old Italian device. An enclosure called a camara-obscura.
It was a small portable enclosure with a small hole and paper or canvas would be hung from the back. There was a small hole in the front.
An artist would sit inside and trace the scene as it was projected, upside-down and backward, on the back of the enclosure.
It made for a correct perspective when painting a scene.
Sounds to me like that is what is happening.
Check for the hole in the blanket.
2007-06-14 11:01:56 · answer #1 · answered by Philip H 7 · 1⤊ 0⤋
Wow, thats pretty cool.
Its not unrealistic. The sun is acting like a lamp in a film projector and pores in the blanket are acting like the lens of a pin hole camera. Its a little like watching the solar eclipse with a peice of cardboard with a little hole in it.
Im not sure why it is coming through in negative, this might be a question for someone who knows more physics.
2007-06-14 11:02:36 · answer #2 · answered by Anonymous · 1⤊ 0⤋
There's probably a small hole in the blanket and he has the equivalent of a pin hole camera. Walk back to the blanket and if you run your hand over it, the picture will blank out and you'll find the hole.
2007-06-14 11:19:24 · answer #3 · answered by Gene 7 · 1⤊ 0⤋
i think Philip H already answered your question,yes its a form
of camera obscura
2007-06-14 18:22:15 · answer #4 · answered by kokopelli 6 · 1⤊ 0⤋