Tesla and wireless power
in [Design]
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From: Tim Williams on 9 Aug 2010 07:34 "Grant" <omg(a)grrr.id.au> wrote in message news:pbgv561l8g6npmri974f31r2f5b46d8179(a)4ax.com... > Yes but if it was a pole holding up the weight, removing the pole would > allow weight to fall, so resisting gravity is not work? Helicopters > work very hard to hover in the air? > > So weight on a pole is potential energy, waiting to fall, like water in > a dam... I guess I'm trying to explain it takes effort to resist > gravity, > the magnet does that, like a dam, but not like a helicopter hovering. Your fallacy is in thinking it takes power to generate force, even though Newton's law clearly states P = F*v. This fallacy arises by experience, because muscles require power to generate a force. Columns and beams and rocks clearly don't have to produce power to bear a load, proving Newton's observations. The reason aircraft must use power to generate force is because they produce force against an unconfined fluid medium, something that can only be done statically in one way.* The medium squishes out from under it, so it has to constantly tread fluid to stay up. *If the density is variable, you can float a blimp. Gravity produces a density gradient, pulling more air to the 'bottom', so you just need something lighter than air to take advantage of that difference. Fortunately, we need lift to counter gravity, so blimps and planes go with gravity quite naturally. If we didn't have gravity (but had atmosphere somehow), blimps would not be possible, and planes would be unnecessary. Tim -- Deep Friar: a very philosophical monk. Website: http://webpages.charter.net/dawill/tmoranwms
From: ehsjr on 9 Aug 2010 11:03 Phil Hobbs wrote: > > It's the wireless power transmission / over unity / extracting > continuous power from permanent magnets / loony types I'm fed up with. They have this circular pipe that they painted the word "dream" on. Put a bunch of magnets all around it, in *just* the right places, and a ball bearing will travel round and round inside it forever. The sound made by the ball bearing generates an electric current in a transducer near the plane of the pipe "dream". The assembly works great, when there are no pertinent facts nearby. Ed > > Cheers > > Phil Hobbs >
From: Bill Beaty on 9 Aug 2010 23:23 On Aug 7, 10:35 pm, Phil Hobbs <pcdhSpamMeSensel...(a)electrooptical.net> wrote: > It's the wireless power transmission / over unity / extracting > continuous power from permanent magnets / loony types I'm fed up with. I dunno, I think it would be cool to have a flywheel desktop toy which would turn for a few hours as it slowly demagnetized a permanent magnet. It might even be the key to a megabuck industry, like Dipping Bird or Chaotic Pendulum. Don't forget that entire vast alt-science community would all want to have one of their own. Set the price initially high! Then build a non-gasoline car which lets you drive to work while it slowly ruins a few thousand pounds of rare earth magnets.
From: Phil Hobbs on 9 Aug 2010 23:29 Bill Beaty wrote: > On Aug 7, 10:35 pm, Phil Hobbs > <pcdhSpamMeSensel...(a)electrooptical.net> wrote: > >> It's the wireless power transmission / over unity / extracting >> continuous power from permanent magnets / loony types I'm fed up with. > > I dunno, I think it would be cool to have a flywheel desktop toy which > would turn for a few hours as it slowly demagnetized a permanent > magnet. It might even be the key to a megabuck industry, like Dipping > Bird or Chaotic Pendulum. Don't forget that entire vast alt-science > community would all want to have one of their own. Set the price > initially high! > > Then build a non-gasoline car which lets you drive to work while it > slowly ruins a few thousand pounds of rare earth magnets. The field energy in your average permanent magnet isn't that high--it's more like a spring than a battery, even, let alone a tank of gas. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net
From: Michael A. Terrell on 11 Aug 2010 07:16
Grant wrote: > > On Sun, 08 Aug 2010 09:53:28 -0700, Jim Thompson <To-Email-Use-The-Envelope-Icon(a)On-My-Web-Site.com> wrote: > > >On Sun, 08 Aug 2010 17:28:54 +1000, Grant <omg(a)grrr.id.au> wrote: > > > >[snip] > >> > >> > >> > >>Reminds of a problem a friend posed recently, if one gets a large > >>strong rare earth magnet, and hangs a heavy weight from it to a > >>steel beam in the shed, what's doing the work of the magnet holding > >>up that weight? Wont the magnet 'wear' out? > >> > >> > >>Related, ever had an MRI? They put you in a big magnetic field, then > >>they modulate that field to 'somehow' get images... Sound like a > >>jackhammer, the operator side, they gave me headphones playing music > >>to hide the noise (no metal in them, headphones had plastic tubes). > >> > >>This thing was built big, solid, one could feel, hear the energy > >>thumping around. Remove all metal objects from pockets quite some > >>distance from the room with the magnet. > >> > >>Grant. > >>> > > > >Yep. The only time I've come close to claustrophobia :-( > > A friend reports the same, she needs to be sedated to go in there > again. I was only in up to my knees :) I've been in the tunnel > of a CAT scan machine, no jackhammers there... The MRI machine at the local VA hospital is in a real tunnel. I got a migraine from the noise it made when they were looking for the cause of the sudden blindness in my right eye. |