why is that we humans can not see little cells and germs with the human eye?

Question

why?

Answer 1

you cant see them, but if you are aware of them, you can sense them. Like if I know I touched a toilet handle in a public rest room and there was no soap to wash my hands, I will feel uneasy about touching any thing else with that hand until I get to wash it. Its an actual feeling that goes away as soon as I know The germs are gone.

Answer 2

Our eyes are not designed that way. We as one of the animals that inhabit the earth have the second best eye sight, we are only second to birds. We were designed to judge distance and three dimensional object, because it helps when your a predator. If you could see microscopic things then our eyes would not be suited to see the dangers around us, everything would probably look blurry. We do have one sensory organ that can detect things as small as molecules, it's your nose. Pretty much all you need to detect danger on a microscopic level, if you smell rotting meat it's a good chance your not going to eat it.

Answer 3

Dr. Derek Lonsdale, has advanced the theory that certain people with neurological symptoms may have unrecognized borderline vitamin B1 deficiencies. Lonsdale worked especially with children who had autonomic nervous system dysfunction -- not specifically panic syndrome, but a syndrome of drastic swings between lethargy and hyperexcitability -- and found that thiamine often helped stabilize them. Interestingly, it's been shown that vitamin B1 is necessary for the metabolism of sugar. People who consume a lot of sugar and refined carbohydrates not only may deplete their vitamin B1 by using large amounts to metabolize sugar but at the same time may not be getting enough vitamin B1 because refined foods are notoriously low in this nutrient. In fact, the origin in Asia of the classic vitamin B1 deficiency disease, beriberi, was the polishing of rice--********* the husk off brown rice to make it into white rice. It's the husk that contains the vitamin. So if your diet contains a lot of white flour, sugar, and processed foods you may not get enough vitamin B1.

Answer 4

Because the surrounding area of the backround behind the cell actually overpowers the light reflecting off of the cell.

Answer 5

The light receptors in our eyes are of a certain size, so it takes a certain size and intensity of an image to register.

Answer 6

our eye cannot focus to that fine of a point. The same reason we can't read VERY VERY small writing without a magnifying glass.

Answer 7

the natural lens in our eyes are not as powerful as those used in microscopes.

Answer 8

Because they are microscopic...i.e. too small to be seen without a microscope.

Answer 9

B ecause God don't want us to see scary movie.

Answer 10

THEY ARE WAY TOO SMALL-----THE CELLS AND GERMS I MEAN------