In this experiment a fine flat bronze spring is clamped firmly at one end and a small mass in the form of a blob of solder affixed to the other end. The length of spring and the size of mass are chosen to vibrate at the same frequency as the mains electrical supply.
The device is placed inside a container to screen it from any electric or magnetic fields and the movement of the mass observed by means of a laser beam. The mass can be observed to remain in a state of permanent vibration and although some random flections take place, for most of the time the vibrating mass stays in phase with the electrical supply despite the attempts at screening. -- You received this message because you are subscribed to the Google Groups "Hum Sufferers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/hum-sufferers. For more options, visit https://groups.google.com/d/optout.
