0
The number of shades of gray that can be seen depends on the ambient light and the field of view. For example, I recently ran displaymate video software on a 15 inch diagonal DELL LCD monitor in a dark room. It displayed an image of 64 shades of gray. The video card limits the monitor to 256 gray shades. The monitor had a black and white luminance range from 0.12 to 100 cd/m^2 when set at a brightness level of 50. I was able to distinguish all 64 gray levels shown on the grayscale.
The theoretical limit for the number of gray levels for this black and white luminance range listed above as determined by the DICOM grayscale is 465. The DICOM grayscale consists of an increasing gray luminance range from black to white. Each level is called a just noticeable difference (JND) because it is tested in a dark room by showing two gray levels with the same angle of view simultaneously while changing one gray level until it appears different to 50% of those tested. Changing The ambient light or the field of view will change the results. The DICOM gray scale is used for medical monitors with higher than normal luminance ranges to display x-rays.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoWell ... my best friend Andreia, has 7 colours which are : blue, green, yellow, orange, black, brown, and red, and has a grey line in her right eye and her left eye is just scary.COM. Is she an alien !?!
Wiki User
∙ 13y agoA healthy human eye can distinguish between 500 different shades of grey.
pixiedragon27
Wiki User
∙ 12y agoBlue, brown, amber, hazel, green, gray. Albinos have red eyes.
Wiki User
∙ 12y agoBrown, blue, green, gray, hazel, amber. Albinos have red eyes.
Seven
Wiki User
∙ 11y agoBrown, Hezel, Blue, and sometimes even Green
Wiki User
∙ 13y agoten million colors
Wiki User
∙ 15y agoa lot
Wiki User
∙ 12y ago4
Add your answer:
Earn +20 pts
Why can't we have pink or purple eyes?
Humans have only two eye colors, blue and brown. All of the various shades of people's eyes are variations of these two colors in combination. Unfortunately, without colored contacts, blue and brown cannot form the colors pink or purple.
How many colors can the human eyes see?
The human eye can see 7,000,000 colors, although certain colors can be irritating and cause headaches and vision issues. Others can induce calm states and relaxation.
What are specific colors of light that can be seen by the human eye?
The colors of light that can be seen by the human eye are the visible spectrum. The specific colors in the visible spectrum are; red, orange, yellow, green, blue, indigo, and violet.
What is due to inheritance in humans?
It is the eye color
Brown eyes blue eyes and green eyes are an example of?
These eye colors are phenotypic expression of genotypes for eye color.
Goats eye for humans?
The goat eyes cannot be used by human beings. They are not compatible.
What effects do colors have on humans?
it disturb eye version and make to loose its original sensitivity to light.
How can eye contacts have different colors?
Yes! It can have many designs and colors!
How is eye color inherited in humans?
Eye color is polygenic and controled by 4 pairs of genes .Blue eye color is totaly recessive to all other colors .
What colors can a Chickadee see?
They can see all the colors you can see, plus a little into the ultraviolet spectrum.
Can humans have 2 different eye colors?
yes it is a rare thing but there can be some people who actually have two eye colours The singer David Bowie has one blue and one brown eye.
What colors do your eye appreciate?
your eye appreciates dark colors
Can a horse see color?
Animals, including humans, have "rods and cones" in the eye that allow them to see color. Horses have some, but not as many as humans, so it is believed that they see color, but pastels. These colors would be associated with food, water, and blood.
How many colors can the eye can see?
The human eye can see 7,000,000 colors, although certain colors can be irritating and cause headaches and vision issues. Others can induce calm states and relaxation.
How many corneas do humans have?
one in each eye
What is the actual color of humans?
As surprising as it may be, humans are many different colors as made by their genetics.
Why do humans have eye color?
all things will happen due to the secretions of the hormones and combinations of chromosomes so humans have different eye colours; true, however it also depends on how much melanin your eye contains. If you are very pale, you will notice that your eye color can change, because it can reflect your clothing colors. Someone with lots of melanin (i.e. dark skin) will have dark brown eyes. the more melanin you have in your body, the darker your eye color. Source: my Anatomy and Physiology class
