An Ireland-based company called Steorn claims it has a turbine technology that generates more energy than it uses, aka perpetual motion. Check out this video, not for an explanation of how the technology works (because there is no explanation, besides a little animation of a fuzzy green circle dancing around three horseshoe magnets) but for the ways the use a variety of emotional tricks to sucker people into believing in it.
The company's credo is a George Bernard Shaw quote: "All great truths begin as blasphemies." But I'm sure Shaw would also agree that the overwhelming majority of blasphemies that go against bedrock principles of science are utter bullshit.
Reader comment:
Scott says:
When I was a teen, I thought I had come up with a perpetual motion machine
which relied on magnetic fields like this one does. The ring that moves
around is a magnet on a wheel with the outside all of one polarity. It is
attracted to one pole of a horseshoe magnet, as magnets of opposite
polarity are, then repelled by the other pole as it moves past. The idea
is that the attraction and repulsion of the magnets allow it to spin
forever, and could allow a little energy to be drawn off to use for
something else. The problem is the magnet on the wheel will instead come
to rest caught between magnetic fields. It doesn't work unless the
horseshoe magnets are electric so they can be turned on and off, and that
takes more energy than can be extracted. My Dad, a physicist, let me build
my machine and see the problem for myself. Nice to see I wasn't the only
one fooled by the idea.
