Science
Exploring "Why" questions about Science
484 articles
why does wind feel colder than stagnant air?
The wind or a fan doesn't actually cool anything. All it does is move air across surfaces faster. You are feeling heat leave your body faster because that heat is moving along with the flowing air.
Why are electric cars and hybrids, which have more powerful motors, quieter than power drills and blenders?
The power tools and such might be using brushed motors which are notoriously louder than the brushless design I would imagine a serious car would use.
Why is it so hard to spot this “Planet Nine” when we can easily observe and photograph light years far off celestial bodies?
Well first of all, we can't easily observe and photograph most celestial bodies that are lightyears away. The ones we can photograph tend to be either giant flaming balls of light, clouds full of gian
Why don’t reptiles produce their own heat, physically how do they NOT and is this preferential to being warm blooded?
There are several advantages, as well as disadvantages, to being cold blooded. By not generating your own body heat, you get to save energy and don't need to eat as much food - which again saves energ
Why do many people see a white light during a near death experience?
They don't. It's purely anecdotal. A handful of people will claim that they saw a "white light", or a "tunnel with shapes at the end" or "the face of grandpa Joe" etc.
Why don’t humans go into heat?
Most animals have evolved this behavior so that their young one's growth coincides with the seasonal availability of food/resources. This also creates a cycle of birth and deaths that overlap so that
Why is force defined as mass x acceleration instead of mass x velocity?
> If an object is moving at a fixed rate of speed (velocity = x), the acceleration would be 0, yet it would still have force. But an object moving at a fixed speed doesn't have any forces acting up
Why are heavier elements found together in the same location?
When the Earth was much hotter, and everything was much more liquid, things could flow a lot easier. Just like putting oil in water, these molten metals and minerals will tend to separate out due to t
Why do tires on a car have air in them? Why not have them made out of solid rubber?
Rubber compresses yes, but not as much as air. Very early cars had solid rubber tyres and the ride was very bumpy (albeit combined with very primative suspension). Also the solid rubber tires would "b
why wireless devices/electronics can’t be used in an airplane below 10k feet..
Previously the FAA was worried that the small EM field generated by electronic devices could introduce interference to an airplane's internal electronics. This was well before shielded everything on t