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If there is a brick wall between yourself and the object, you can't see it.
Ergo something must be travelling in a straight line between you in order for you to see it.
Remarkably, this simple hypothesis has led to the entire science and industry of optics, from microscopes and spectacles to the Hubble telescope and observations of gravitational lensing. I rather think it has legs, and yours doesn't.
In general we think that to see an object the light reflected from the object must enter your eyes.
I can add a medium of smoke to the diagram to ray trace and clearly show no reflective rays in the direction of our eyes from a laser.Please explain?
Quote from: Thebox on 29/01/2016 05:59:20In general we think that to see an object the light reflected from the object must enter your eyes. If an object is not a light source then it needs to be illuminated by a light source, and the light hitting it to be reflected into our eyes in order for us to see it.We can see light sources, like the sun or a lamp, because the light goes straight into our eyes.Quote from: Thebox on 29/01/2016 09:18:38I can add a medium of smoke to the diagram to ray trace and clearly show no reflective rays in the direction of our eyes from a laser.Please explain?The laser is a light source directly illuminating (and burning out) your retina.
Colin I did not and do not want to discuss Wiki
Here is a simple experiment. I've filled in the expected results. If you find something different, fame and fortune await. Go into a really, really dark room - say a coalmine - and switch on a light bulb. Can you see it? {YES} Where is the light coming from if not the bulb? You didn't switch the entire universe on, so it must be coming from the one thing that you controlled. Now look at some other object, not a light bulb, in the room, and switch the light bulb off. Can you still see the object? {NO} So the object must have been reflecting light from the bulb.
Please provide proof/evidence that there is light reflecting directly into my eyes from my walls?
Quote from: TheBoxPlease provide proof/evidence that there is light reflecting directly into my eyes from my walls?Stare at your wall.Then put a sheet of paper between your eyes and the wall.The wall now disappears, because the paper is blocking the light that was reflected for your wall.QED
What I said is that if you took away all the matter from the Universe except one star and yourself, and you turned your back to the sun and was looking away from the sun, light would be in your eyes still but it would look dark to you. [ Invalid Attachment ]
It is a fact that distance exists, whether we could see or not see this remains true. our eyes relatively cover distance in no time at all. What do you think?
Quote from: Thebox on 29/01/2016 05:59:20It is a fact that distance exists, whether we could see or not see this remains true. our eyes relatively cover distance in no time at all. What do you think?What we all think seems to make no difference to you Box but I'll give it the old college try anywayMr. Box, depth perception is a result of binocular vision and the learned ability of the brain to distinguish between near and far objects by recognizing learned information about shapes of familiar images. One doesn't see "distance", they only recognize the effect that perspective has upon the optic nerve and have learned that when a familiar object looks smaller, it's farther away. When it looks larger, it's closer. Simple!And BTW, concerning another thread you posted "Does the sun reflect light?", I'm guessing it wasn't a "trick question" after all was it. Just another ill conceived image floating around in you brain.
What a truly beautiful thought, being immersed in an ocean of light. It needs to be immortalized in an epic poem. I like your question but need some help in focusing my response. In talking about "how we see" I get the direct and reflected light into the eye, but I think you are asking for something else. I would like to discuss quantum effects and the visual centers in the brain with respect to the cones and rods in the retina but am unsure it would be relevant to the discussion. Please advise.
One does see distance, distance is an axiom and provable to be there, regardless of sight I can experience the distance of space, by moving.
(if photons really exist to begin with
Quote from: Thebox on 16/02/2016 07:13:05 One does see distance, distance is an axiom and provable to be there, regardless of sight I can experience the distance of space, by moving.Nope.....We only judge distance or measure it. Go out on a dark night and look up at the stars. Now, tell me which one's are closer to you and which ones are more distant. Quote from: Thebox (if photons really exist to begin with So now you're questioning the existence of the photon?
I can certainly observe things in a distance,
I think you are forgetting light is continuous from A to B and vice versus, a coupling to sight. We don't directly observe individual photons, we observe light as a whole.