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sciencekid

sciencekid said:

the feeling she felt in her experiment i think had to do with the feeling you get when you know someones looking at you, kind of like when your hair stands up on end and then you turn around and someones there staring at you

Ehh, that's a lot of talk. What happens is that you have a slight, subconscious feeling that someone might be looking at you. This probably happens a lot more than you would expect, it's just that you're going to remember it when you find out that some actually is looking at you.

Quote:

how come waves like sound need a medium, but EM waves don't

Well, that's the difference between mechanical and electromagnetic waves. Electromagnetic waves are created by the vibration of an electric charge.