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.
My husband and son created this. They said that the trick to getting it to work was in step 1 – snip the corners on both sides of the fold…snip so that the tiniest bit of alum foil is left. this allowed the foil strips to move more easily.
Be sure to thoroughly sand proper parts of the coat hanger. You want to only sand the coat hanger where the two pieces of aluminum foil come in contact with it.
Sometimes the foil can be too heavy. We recommend using really thin aluminum foil, such as the type you find at “dollar stores”.
Also, when you hold your electroscope, only touch the glass jar, but not the metal lid. Touching the lid can cause electrons to dissipate to your hand.
Hi I have a question. I tried making this but it didn’t work do you know what might help?
From Jessie.