Find solution
Do some humans only see in black and white?

How do humans know that some animals see in black and white or see more colours than us?

  • Answer:

    We can tell by the cones and rods in their eyes. Humans have both but if you only have one of the other you can tell what colors the animal sees. Rod cells are highly sensitive to light allowing them to respond in dim light and dark conditions, however, they cannot detect color. These are the cells which allow humans and other animals to see by moonlight, or with very little available light (as in a dark room). This is why the darker conditions become, the less color objects seem to have. Cone cells, conversely, need high light intensities to respond and have high visual acuity. Different cone cells respond to different wavelengths of light, which allows an organism to see color.

b.plimme... at Yahoo! Answers Visit the source

Was this solution helpful to you?

Other answers

Humans have a lot of rods in their eyes, which are good for color vision and detail. Animals have a lot of cones, which dont do color but are more sensitive to light. When the lights go out you rely on your cones as your rods cant help you and thats why in dim light things go black and white.

timssterling

Because we've examined their retinal contents and found that some animals have only the right types of cells to make a dichromatic image, where as we (unless you are colorblind), have enough to make trichromatic vision.

The Dog Abides

They cut open their eyeball to see the amount of rods and cones.

Mike

dr doolittle silly

midnite rambler

Nicole G

On the retina of the eye rods are sensitive to black and white shades (intensity) whereas cones are sensitive to colours (frequency). I guess they look at ratios in animals retinas to determine how they see the world.

Raccoon

Cause they take their eyes out and open them to see what's inside!! STOP EXPERIMENTING WITH ANIMALS!!

Ana Eskildsen

We know by studying the wavelength absorption of the opsins produced in retinal cells.

Dendronbat Crocoduck

Well i'm a human and I read about it in books[not ordinary books but what students read] and I read that some animals cannot see colour that humans can. If I line up some balls in front of my dog. Green--blue--yellow--brown---black and I told hime to pick one up..which one would he pick up? I also read that the house fly with all those lenses in its eyes can only see in black and white images.

EDWARD W

Load more

Related Q & A:

Just Added Q & A:

Find solution

For every problem there is a solution! Proved by Solucija.

  • Got an issue and looking for advice?

  • Ask Solucija to search every corner of the Web for help.

  • Get workable solutions and helpful tips in a moment.

Just ask Solucija about an issue you face and immediately get a list of ready solutions, answers and tips from other Internet users. We always provide the most suitable and complete answer to your question at the top, along with a few good alternatives below.