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Comment: Lightning Rod (Score 2) 191

by kcelery (#48011855) Attached to: The Odd Effects of Being Struck By Lightning

Once met with a guy who install lightning rod in 80+ storeys buildings.

He said, grounding the current from above is not enough. When lightning strikes,
the current is ground, but then the many computers in the building would malfunction.

Special technique is required that only few companies can get it right.

I would suspect the current has to be shield like coaxial cable or the circuits along
the current path will got damaged. In this case the victim's brain.

Comment: Virtual telescope (Score 1) 187

by kcelery (#47741103) Attached to: Slashdot Asks: Cheap But Reasonable Telescopes for Kids?

Grinding my reflecting mirror is a project that I would like to achieve, but after decades
busy doing something else. The mirror project is still pending.

I was thinking, if someone lives high up some mountain in Hawaii, has a big telescope,
it could be a profitable business renting the telescope to someone else online.
Since stars don't move too quickly, viewing celestral object through virtual telescope
could be equally rewarding.

Comment: Re:Imagine what this tech will do for (Score 1) 61

by kcelery (#43650317) Attached to: Beer Drone Delivery Service For South African Music Festival

The whole process could be automated. Ordering, billing, pay through whatever and delivery.

The guy who order should send their GPS location. When the UAV delivery vehicle arrives,
the guy who ordered should flash some light to guide the arriving flight. Then the UAV would
home in and hover. The guy on the ground hold up his cell phone to display a QR code
to confirm his identity. The UAV will land and release the food after the QR code is validated.