Didn't you base your estimation on the leakage losses from power grid distributions? That would make more sense- as the higher German figure is getting rather too big and is only based on an arbitary depth of penetration, by the looks of it. [& 15+ times higher] Most Hum we discuss seems to be at elevated levels above ground anyway and be building related via nodes. This posits a non linear distribution which would reduce power needs substantially too. I reckon the german work is the power of kite string hum -flying high in the stratosphere :) [Joking apart- all ideas are worth considering and this is just my 'one off' view.]
On Jun 26, 9:57 am, "john dawes" <[email protected]> wrote: > By observing the movement of a small mass attached to a spring, I have > estimated that the energy required to produce the Hum across known areas of > the UK is > > 350 Kilowatts/ square kilometre. > > A German investigator, using a completely different approach gives a figure of > > 5.4 Megawatts/ square kilometre > > His approach is this. > > Germany has an area of 35711.9 square kilometres. Vibration can occur in a > small basement of 2 metres which would give > > 35711.9 * 1000 * 1000 * 2 = 7.14 * 10E11 cubic metres of earth being vibrated. > > Weight of a cubic metre of earth 1700 kg > > Total mass of vibrating earth 1.12 * 10E15 > > Assuming the amplitude of vibration to be .0001 metre the potential energy > would be > > 1.12 * 10E15 * 9.8 * .0001 = 1.19 * 10E12 Newton metres > > With a 30 Hz hum the vibration of one cycle would be .0017 seconds therefore > the power requirement for Germany would be > > 1.19 * 10E12 * .0017 = 1.98 * 10E5 Megawatts. > > Any other bids? > > The information game from a German open forum web site. > > http://f3.webmart.de/f.cfm?id=234287 -- 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.
