How humans see color.

[Guest halo2fan]

I am seriously in need of help for a personal interview for my science project question. My question is: How do people see color? Does rotation (if the object is rotating) affect what color that we percieve? Awnswers would be greatly appreciated.

[ecoli]

http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/V/Vision.html

[Guest halo2fan]

I am afraid that i can not use a link to a website, i have to have a INTERVIEW. If you answer the question in words, then it would help. I appreciate the link anyways though.

[-Demosthenes-]

Although cones operate only in relatively bright light, they provide us with our sharpest images and enable us to see colors. Most of the 3 million cones in each retina are confined to a small region just opposite the lens called the fovea. So our sharpest and colorful images are limited to a small area of view. Because we can quickly direct our eyes to anything in view that interests us, we tend not to be aware of just how poor our peripheral vision is.

 

The three types of cones provide us the basis of color vision. Cones are "tuned" to different portions of the visible spectrum.

 

* red absorbing cones; those that absorb best at the relatively long wavelengths peaking at 565 nm

* green absorbing cones with a peak absorption at 535 nm

* blue absorbing cones with a peak absorption at 440 nm.

 

Retinal is the prosthetic group for each pigment. Differences in the amino acid sequence of their opsins accounts for the differences in absorption.

 

The response of cones is not all-or-none. Light of a given wavelength (color), say 500 nm (green), stimulates all three types of cones, but the green-absorbing cones will be stimulated most strongly. Like rods, the absorption of light does not trigger action potentials but modulates the membrane potential of the cones.

 

 

I'm cute that way.

[Tesseract]

Is there a program with which you can see the entire nm scale?

[Guest halo2fan]

Thanks demosthenes, that info helps a lot.