"Doctor Drivel" wrote in message
reenews.net...

"Andy McKenzie" wrote in message
...

http://www.overunity.com/

I've only spent a few minutes looking at it, but it looks like the
ultimate forum on these issues. It's so weird that you almost think its
an
elaborate bit of conceptual art - I fear it's not.

There are a number of Yahoo groups on these matters: free energy,
over-unity, etc. There are 1000s of people working all over the world on
many types of devices. One day, maybe.....

Perpetual motion machines and "free energy" are not the same thing. A
heat
pump gives out 3 to 4 times more energy than it consumes. Is it Perpetual
motion? Er, er, no. Is it a free energy device? No. A free energy
device
has no energy input. Is it over-unity? Er, no, it is moving heat. It is
a
semi free energy device though, as its input, electricity and heat is only
partially free - the heat.

perpetual motion is the output fed back to the input and it keeps going. I
recall the largest moving land machine in the world - German strip mining
machine run on 36 electric motors. It strips the surface of the earth and
takes in coal (energy) this goes down a flexible conveyor belt and to a
local power station. The machine has a long flexible power lead from the
grid which is fed from the local power station. A perpetual motion
machine? Probably, as the output is fed back to the input to keep it
running
(although men have to operate it)


It is not a perpetual motion machine as the coal will run out (leaving aside
any other efficiency questions). Chemical energy (in the coal, which comes
before that as heat from the sun and before that from nuclear energy in the
sun) is temporarily locked up in the coal and is converted to electrical
energy. It would only be perpetual motion if the coal was being replaced and
the sun never died. In reality it is just a machine which is using our
supplies of concentrated energy (in the form of coal) and dissipating it out
into space as waste heat not easily recoverable (increasing entropy) in the
rather pointless task of digging up its own energy.

Perpetual motion machines have no other inputs (and don't exist).

The fact that the sun will run down and all life on earth will perish and
the question of what happened at the start of the universe (and what will
happen at the end) are all very interesting (and, in the case of the last
two, not understood) but not really relevant to life on earth at present!


--
Bob Mannix
(anti-spam is as easy as 1-2-3 - not)