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View Full Version : everything you see is in the past?


L
June 14th, 2009, 07:44 AM
I was thinking about Einstein’s theory about how nothing can be faster than the speed of light, when I thought, dose that apply to eyesight too? Like, as soon as we open our eyes, dose it takes the same amount of time to see the objects in front of you as it would take light to get to them? Because if it dose, dose that mean what were actually seeing is in the past? The time it would take for light to get from your eyes to the thing your looking at in the past? Also, is this a already known fact? becuase they never teach anything this deep in year 9 science.

Sorry if this is a bit confusing I did my best to explain it.

Skeln
June 14th, 2009, 01:27 PM
Um...this is very confusing but I think I understand. Um...with as fast as the speed of light technically the theory is that if you're going the speed of light then you cannot change, you don't grow old or young and yada yada yada. So really with light traveling as fast as it is...great now I'm all confused!

Oblivion
June 14th, 2009, 01:32 PM
I believe you're right; if the light enters ones eyes, and then our eyes and brains process it, we would actually be seeing a couple of milliseconds in the past. Like stars; we are actually seeing the light of a star that was there over a few years ago, because light takes so long to travel from that star to Earth. By now, in actual time, the star could be dwarfing, but we could still be seeing it right now.

Camazotz
June 14th, 2009, 07:26 PM
Yes, we are seeing in the past. However, the amount is so minuscule, it doesn't really matter in every day life.

bagel
June 16th, 2009, 07:41 PM
Einstein said that nothing is faster than light speed??

INFERNO
June 17th, 2009, 01:25 AM
I was thinking about Einstein’s theory about how nothing can be faster than the speed of light, when I thought, dose that apply to eyesight too? Like, as soon as we open our eyes, dose it takes the same amount of time to see the objects in front of you as it would take light to get to them? Because if it dose, dose that mean what were actually seeing is in the past? The time it would take for light to get from your eyes to the thing your looking at in the past? Also, is this a already known fact? becuase they never teach anything this deep in year 9 science.

Sorry if this is a bit confusing I did my best to explain it.

It takes time for the information to get from your eyes to your brain and once it reaches the brain, it must travel to different parts to be "analyzed" and then somehow come together according to the binding problem/theory.

Technically, yes, we see the past. However, despite it being the past, little time has elapsed so the past we see is incredibly similar/same as the present. It is not an issue of seeing a car then for the tiny amount of elapsed time, the car has completely vanished (assuming nothing is there for it to hide behind).

The only fact in science is that there are no other facts. Giving an event, such as the one you gave, is a phenomenon that we can use scientific theories to analyze.

MoveAlong
June 17th, 2009, 01:27 AM
Yes, we are seeing in the past. However, the amount is so minuscule, it doesn't really matter in every day life.

I agree.