I tried to go to page but I got an 404 error message at Virgin Media of PWP - 404 Error This Page Cannot Be Found Oops, sorry we don't seem to be able to find the page you're are looking for
Please hit the back button on your browser, or if you have typed the URL yourself, please double check you spelt everything correctly this is the paste of the link showing in URL box http://www.johndawes.pwp.blueyonder.co.uk/hum1.htm On Jun 16, 1:02 pm, "John Dawes" <[email protected]> wrote: > It is not possible to record the Hum as a sound wave for as a sound wave it > does not exist, however, it is possible to allow the energy of the Hum to > interact with a small vibrating mass and record the resulting modulation. > > Observations and measurements using this method have been described on my web > site at various times and most experiments have used a small mass fixed to > the end of a flat vibrating spring, however, to produce this recording a loud > speaker was used, the cone of the speaker becoming the vibrating mass. > > The movement of the cone is extremely small but can be readily detected > using a laser beam and photo electric cell. > > Note. This is not a simulation, whether or not it sounds like the human > interpretation of the Hum is irrelevant the purpose being to detect and > measure the energy responsible for causing the Hum</B> > > The original recording was made in WAV and then converted to MP3 because of > web space limitations > > To hear the recording go to > > http://www.johndawes.pwp.blueyonder.co.uk/hum1.htm --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Hum Sufferers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/hum-sufferers?hl=en -~----------~----~----~----~------~----~------~--~---
