News for hackers. Stuff that matters.

A comment on DARPA program sets distance record for power beaming. Parent comment

Re:DARPA program sets distance record for power beaming by TeMPOraL on Monday June 16, 2025 @07:02AM (#44288385)
> Using fiber optics for power is like trying to make a solar panel generate electricity from a laser beam.

Isn't that exactly what power beaming is, except typically with frequency range in microwaves instead of visible light?

[ Parent | on HN ]
Re:DARPA program sets distance record for power beaming by malfist on Monday June 16, 2025 @09:43AM (#44289442)
> except typically with frequency range in microwaves instead of visible light

That's a big freaking deal.

[ Parent | on HN ]
Re:DARPA program sets distance record for power beaming by cap11235 on Monday June 16, 2025 @10:54AM (#44290190)
eg, consider WiFi. They choose their bands carefully for wireless standards, and terahertz is pretty far from microwave GHz. I've never seen direct THz synthesis outside of partially-insane radar engineers.
[ Parent | on HN ]
Re:DARPA program sets distance record for power beaming by ben_w on Tuesday June 17, 2025 @06:01AM (#44297398)
I thought half the controversial scanners since 9/11 were THz (the other half being backscatter X-ray)? Was that just a marketing term?

(I can easily imagine "terahertz for terrorism" being a slogan…)

[ Parent | on HN ]