Human Body
Exploring "Why" questions about Human Body
481 articles
Why when I press on my skin it leaves a white spot for a couple of seconds?
You have tiny blood vessels near the surface of your skin (capillaries). When you push on your skin you force blood out of them. When you release it takes a fraction of a second for the blood to retur
Why do bad smells make us throw up?
In case you ate some of it. It's a biological response to purge toxins from your stomach, if something smells rotten, it probably is rotten and should not have been eaten. now we don't eat such things
Why isnit that it’s difficult to retain your balance if you close your eyes?
Balance is accomplished by a few things working together. You have your ears, your eye fluid, and your brain (mainly the way it interprets what you see). It’s the same way you can tell if you’re stand
Why do you see weird colors when you press your eyes?
If I had to take a guess, no expert, just had anatomy and physiology through college, I'd imagine it'd have something to do with the rods and cones in your eyes and the optic nerve. When you push on y
Why do video games rely on mega high resolution textures to appear more realistic, when a DVD movie can look far more realistic with a resolution of only 720×480?
because texture in a game are applied to surfaces that can be viewed from as close by as the player wants. If you have a rock with a 64x64 texture, that looks great if the player is far away enough to
why it takes longer to search my windows computer for a file than to google something.
Indexing. Google has a huge, highly optimised database designed for the sole purpose of searching quickly. Even with indexing switched on, your computer doesn't have anywhere near as good a system.
Why does a hearing a recording of my voice sound different to me then when I hear myself talk?
We hear sounds as vibrations hitting our ear drums. When we hear most sounds, these vibrations travel through the air and into the ear canal. Our own voices also vibrate through our bodies, creating a
Why does healthcare in the USA cost so much more than elsewhere, is it better than treatment elsewhere?
In the UK everyone contributes to healthcare via taxes. More people contributing to a communal pool means lower overall costs for everyone. In the US everyone has to buy their own insurance and many p
Why do cables like earplugs and chargers tangle up so badly and seemingly easily in your pockets?
Basically, there is one state for the wires to be organized but nearly infinite ways for them to be tangled. It's much more likely that they will be tangled with movement than remain organized. Anothe
Why is it that the hair on our head grows without a limit, while the rest of the hair on our bodies only grows to a certain length?
Because your head hair does grow to a limit. It's just a longer limit than the hair elsewhere