- #1
Grimstone
- 66
- 0
I have a question, and forgive me for not presuming you have the same basic knowledge as my self. but I want there to be no doubt about the question when it is given.
Light is a very wide spectrum from low end Inferred ultra violet the high end.
<<----IF------------------------UV------------------->>
<<----IF-------[human eye]-----UV------------------->>
now the human eye can only see a small sliver of that spectrum. and we refer to that as visible light. although other animals can actually see better than we do.
We look at the ball and see it is red. Because the Surface reflects that band of the light spectrum back and the rest is absorbed. this is, in essence, how we see color. Dogs are color blind, but seem to see better at night than we do.
We can set up a computer mechanical device that can do color matching (home depot,etc etc.) so.
If Bob used a color matching device to match the ultra violet just outside our range of "visible spectrum" and used that to paint a door. When Tina looks at the door, What will Tina see?
I do not believe that the "ultraviolet paint" that you have to use a black light on to see, is "true Ultraviolet" or else when I turn on a black light. my white shirt is suddenly ultraviolet as well.
I have heard
A. the door would be black, a lack of light, as none is reflecting back that we can see.
B. the paint would not alter the light at all and you would see the wood grain under it.
C. a shimmering wall as light "flecks" escaped and our eyes would perceive them.
D. It would look like a black hole man, no light reflecting off it, it would be a black hole.
[I don't take bob serious to often]
I believe A. is correct but can't completely rule out B as i have no means to test this.
But I Do disagree that it would look like a black hole.
what say you?
Light is a very wide spectrum from low end Inferred ultra violet the high end.
<<----IF------------------------UV------------------->>
<<----IF-------[human eye]-----UV------------------->>
now the human eye can only see a small sliver of that spectrum. and we refer to that as visible light. although other animals can actually see better than we do.
We look at the ball and see it is red. Because the Surface reflects that band of the light spectrum back and the rest is absorbed. this is, in essence, how we see color. Dogs are color blind, but seem to see better at night than we do.
We can set up a computer mechanical device that can do color matching (home depot,etc etc.) so.
If Bob used a color matching device to match the ultra violet just outside our range of "visible spectrum" and used that to paint a door. When Tina looks at the door, What will Tina see?
I do not believe that the "ultraviolet paint" that you have to use a black light on to see, is "true Ultraviolet" or else when I turn on a black light. my white shirt is suddenly ultraviolet as well.
I have heard
A. the door would be black, a lack of light, as none is reflecting back that we can see.
B. the paint would not alter the light at all and you would see the wood grain under it.
C. a shimmering wall as light "flecks" escaped and our eyes would perceive them.
D. It would look like a black hole man, no light reflecting off it, it would be a black hole.
[I don't take bob serious to often]
I believe A. is correct but can't completely rule out B as i have no means to test this.
But I Do disagree that it would look like a black hole.
what say you?