When high energy radiation strikes the Earth from space, it’s called cosmic rays. To be accurate, a cosmic ray is not like a ray of sunshine, but rather is a super-fast particle slinging through space. Think of throwing a grain of sand at a 100 mph… and that’s what we call a ‘cosmic ray’. Build your own electroscope with this video!
Please login or register to read the rest of this content.
Please try these items.
1) Instead of sanding the entire coat hanger, only sand the area where the aluminum foil will hang and the top of the coat hanger there you attach the ball of foil. By leaving the thin coating on the long part of the coat hanger, you’ll help prevent electrons from leaking into the lid of the jar.
2) It is best to use really thin aluminum foil. Brand name foils can be too thick, which causes them to be too heavy for the static to push the foil leaves apart. Try getting some really thin foil from a “99 cents” type store.
This isn’t working for me. When I hold to balloon close to the foil ball, I hear a static charge from the balloon to the foil ball but the foil leaf doesn’t move at all. What am I doing wrong?
this is so good