/diy/ - Do It Yourself

I just bought an oscilloscope and I've been jerking around, I tested what noise my body had and I found this, a ~100V peak sine wave, it rises to around 150V when I stand barefoot. I guess it comes from the grid, but I wasn't touching anything connected to it except for the probe, I would like to find the explanation behind this. I sometimes feel little burn-like shocks at my fingertips when I touch things connected to the grid, like my laptop, I guess it must be related.