I can't find the thread relating to the "vibrating, humming" sensation around laptop computers and similar, when touching another object of metal construction.

Having just purchased a new electric blanket I noticed at the first attempt that night a strong "vibrating" or "humming" sensation when turning of my bedside lamp.

First thought was "there's a fault with the 'blanket."

Second thought "is the metal lampstand earthed?"

I found the sensation only happened when lying on the working electric blanket and the strength varied in line with the power rating on the control.

The two items are both connected to the same outlet and so I thought there was a cross interference because of this.

From what I read earlier from others on here, that probably is not the case.

Is this overnight exposure to this electrical field damaging to one's cell structure or heart rythmns do you think?

Thanks,

TeaAitch

Young’s dual slit experiment shows particles to have a wave-like nature as photons or electrons create an interference pattern when fired through the slits. Even when particles are fired individually through the slits, an interference pattern still builds up implying each particle must go through both slits and interfere with itself - clearly a pathway that is hard to imagine! However wouldn’t performing this experiment in a cloud chamber using electrons (again fired individually) reveal the electrons’ pathway(s)? Also would turning the cloud (or bubble) chamber on and off cause the interference pattern to appear and disappear (I have heard that identifying the slit through which an electron passes removes the interference pattern but would this be the case in the cloud chamber as proposed here?). Many thanks.

When I charged a flash camera beside a radio set to AM, I noticed a series of sounds produced, similar to that of the harmonics of a sliding square waveform with frequencies above 16000 Hz. How do they interfere and what part of the camera generates radio waves?