This looks like fun: make your own homopolar motor made from only a battery, a magnet and a copper wire!
See it in action: Link (embedded YouTube) | More info at Dangerously Fun | Homopolar Motor in Wikipedia
This looks like fun: make your own homopolar motor made from only a battery, a magnet and a copper wire!
See it in action: Link (embedded YouTube) | More info at Dangerously Fun | Homopolar Motor in Wikipedia
Comments (2)
So I guess a homopolar is a gay person who has bipolar disorder.
//but now after admitting it, I feel kind of dirty.
But how do you tell if your sandwich really has been in the fridge too long?
If a protected sandwich gets stolen, you can leave an actual moldy sandwich in its place. The thief will think
"Heh, I'm not fooled by fake mold!" and chow down.
My Dad claimed he replaced the whiskey in his dorm room with kerosene and waited in the next room to hear the janitor sneak in for a wee dram. He never lost any again.
If your work requires you to pass random drug testing, you can grind up some legal poppy-seeds and mix with the sandwich. Apparently these give a false positive. For the ethically ambivalent, you could insert actual material (horse tranquilizers, BC leaf, etc).