A pretty vague title, I know. But sometimes you hear things and you think 'oh' or 'huh'. Know what I mean? I'll give some examples:
The reason a gun is used (as opposed to a system of lights) to start athletic races is because despite light travelling faster than sound - in other words despite the fact that light would reach the eye quicker than sound reaches the ear - the brain takes longer to process light than it does to process sound. So they use a gun instead.
Light is invisible. You can never see it. Only the things it illuminates. Remember that next time you're watching sci-fi movie space battles.
You never touch anything. Ever. Stroke your cat. Cut your finger off with an axe. Kiss your lover. You haven't touched any of them. What you feel is the electromagnetic field which is too strong for things to touch. Right now you're floating. Not by much, admittedly, but you are floating.
When you jump up, the earth moves towards you. Even very small amounts of mass have gravity and even very large amounts of mass are influenced by that gravity. Seems ridiculous but it is supposedly true if science is to be believed.
Sorry all mine are about physics. They can be facts about anything. I just happen to like physics.
The reason a gun is used (as opposed to a system of lights) to start athletic races is because despite light travelling faster than sound - in other words despite the fact that light would reach the eye quicker than sound reaches the ear - the brain takes longer to process light than it does to process sound. So they use a gun instead.
Light is invisible. You can never see it. Only the things it illuminates. Remember that next time you're watching sci-fi movie space battles.
You never touch anything. Ever. Stroke your cat. Cut your finger off with an axe. Kiss your lover. You haven't touched any of them. What you feel is the electromagnetic field which is too strong for things to touch. Right now you're floating. Not by much, admittedly, but you are floating.
When you jump up, the earth moves towards you. Even very small amounts of mass have gravity and even very large amounts of mass are influenced by that gravity. Seems ridiculous but it is supposedly true if science is to be believed.
Sorry all mine are about physics. They can be facts about anything. I just happen to like physics.
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