Hi PF, it's been a long time since I've posted on here. I have a lab due soon and it was regarding oscilloscopes. This isn't really a homework problem so I'm not using the template... Anyways, when I held the input lead in my hand, the amplitude of the wave displayed on the screen got much larger. I can't think of a reason why that would be. TBH, I still don't fully understand the concept of the oscilloscope. I understand that it detects voltage and graphs it as a function of time. But where is this mysterious voltage coming from when I touch the lead? And why is it even a wave? Thanks in advance for your help.