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19858
This article was written as if this was a newly discovered technology. I have been using an electric shaver with induction recharging for years. Mike YorkPhoenix, Ariz. The ability to project electrical power some distance suggests a possible method to detonate or disable improvised explosive devices. Josef HeitWebster, N.Y. Several readers pointed out that wireless […]
- Physics
The Power of Induction
A new technology based on classical electromagnetic theory uses oscillating magnetic fields to transfer electric power wirelessly across a room.
- Math
Mathematical Lives of Plants
Mathematical models that capture the essence of biological growth mechanisms are beginning to reveal how plants develop structures with intriguingly elegant geometries.
