Always asked myself this…
Physician friend explained that to me but i dont get it, thats why ELI5…
In: 333
You see Billy, the kind of light your eyes see goes through glass, but bounces off tin foil instead. This is because of what different things are made of. You know how sometimes you try to go into the kitchen but then your brother jumps out and wrestles you so you can’t go through the door? It’s a little like that. Some types of things wrestle the light and either grab it or push it back, but other things just let the light go right through.
Metals; which conduct electricity; are homes to mobile electrons, which absorb light. once an electron becomes immobile it cannot absorb light. glass is an oxide (SiO2), all of the silicon’s mobile electrons are bound up in bonds with oxygen atoms, if you combined the aluminum with oxygen, you’d get aluminum oxide, which when crystallized is known as clear sapphire,
Light bounces off stuff. Some stuff is made from small blocks that the light can go through. We can see all the stuff when light goes into our eyes.
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