Charging Batteries without Wires

MIT Technology Review ^ | Kate Greene

[djf]

I thought it was basically constant current then a quick drop to zero... shows what I know, that's why I do software instead of hardware.

I could never do circuit stuff, all kinds of weird parallelism going on...

[Truth29]

Re Maui, go to secondlife.com and create your own environment.

[Erasmus]

I used to be an EE before I decided to stop working for a living and went into software.

< }B^)

[marvlus]

Interesting, but shocking news!

[conservatism_IS_compassion]

How much more practical is this than just putting a spring in your laptop and having the user turn a key to wind the thing up every 10 minutes?

[Myrddin]

The data was formatted as name=value pairs with a colon between fields and newline at the end of the record. The COBOL programmers were forced to use string/unstring. I was able to employ strtok() to take the records apart. It would probably run in under a minute on today's machines.

[SunkenCiv]

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UNPLUGGED. Alternating current fed into a wire loop (blue) generates a field that induces currents in the coil (red, at left), creating a magnetic field that reaches a second coil (red) several meters away (at right), creating a local field that induces a current in the second loop (blue), lighting a bulb. -- Science

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