Is it possible to feel a zap from a watch battery and LED? Answered
Here's the setup: one LED with its leads tied by conductive threads to magnets which stick to a watch battery, in contact with skin for multiple hours.
I had somebody say that this somehow was zapping them (enough to leave a rash). Is this possible? I've handled lit LEDs with watch batteries a lot (even underwater) and never felt a thing! No spark, no zap, no shock, nothing. So have I just been lucky? Can this setup actually zap you enough to feel it, or even irritate your skin? Or was the zapping perhaps an allergic reaction to the nickel magnets which was mistaken for being sparked?