Monday, December 17, 2007

m2m

Motors

in this expeirement we were making solens. We wrapped wire around a straw attached it to a battery and put a needle in.

when the wire wasn't attached to the battery and you put the needle in nothing happened. But when the battery was attached the straw got really hot when you put the needle in.

also it sparked in my hand so i threw it was an accident I'm so sowwy

Wednesday, December 12, 2007

m2m

measure of sound

we didn't get to the speaker part. It sounded really cool and i want to do it.

In the first magnetic expeirement we were tring to find a pattern in how strong the magnetic feild is when you wrap peices of wire around it. We came up with the conclsion that the more you wrap it the higher the magnetic feild.

i didn't know that it would be hot when we put the wire on the battery but i burned myself.