energy density

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Paranoia, it’ll destroy ya

Check this out – NY Times: No Motors, but Mistrust at Tour de France. So, the short story is that some people claim that Cancellara is cheating by putting a hidden electric motor in his bike. Now they are going to do random hidden-motor checks. I have analyzed this motor-in-a-bike already: Energy in a hidden…

Energy in a hidden battery

Back to the discussion about hiding an electric motor in a pro racing cycle. Before, I looked at a video of Fabian Cancellara to see how his speed and acceleration compare to other bikers. The claim on the internet is that he pulls away so fast that he must have a motor hidden in his…

Power source for a lightsaber

This one has been on my mind for quite some time. What kind of power source would you need to run a lightsaber? I was actually worried recently about this post when I saw the Discovery Channel show “Sci Fi Science“. In that particular episode Michio Kaku talks about how you would actually build a…

Battery to power a house for a week

I saw this post about Panasonic’s home battery. The claim is that this will lead a battery that can power a house for a week. I wonder if I can estimate how big this battery would be. First – to estimate the energy a house consumes. My first approximation is that you could probably run…