Heck, just popup a dialog box from a program and skip all this USB to LED flashy stuff. Shesh..
Gee folks, the laws of physics pretty much govern how "wireless" transmission of energy works. Using magnetic fields to transfer power from here to there is not new, we've been doing it long before Edison and Westinghouse where fighting it out over AC verses DC over 100 years ago. Westinghouse used "transformers" way back then so transferring power from one coil of wire to another though a magnetic field is not new.
But they are using a different frequency! That's new right? Not so fast... Designers have been using higher frequencies in transformers for a long time now. Aircraft have routinely used 400 Cycle power systems so designers could use smaller (and lighter) transformers since before WWII. Further, we now routinely use frequencies in the Kilohertz in switching power supplies for the same reason. More efficiency, smaller size and weight by using higher frequencies.
But they really haven't solved anything or come up with anything new. They will suffer efficiency losses because their magnetic flux coupling is weak due to the distances involved, they will suffer from limited ability to transfer power because the maximum flux density of air is pretty low, and they will have to add significant weight to the cars being charged by adding large coils of wire with many turns to them.
Nothing new to see here..
IQ below room temperature.
Not sure what range you are talking about? Could be really good, could be not so good, could be really bad.
70 degrees Fahrenheit
21 degrees Celsius
294 degrees Kelvin
Proportionality is important, too. His punishment was wildly out of proportion to the offense.
Nope.. 2 years was for the crime committed. ~200K was for expenses related to the damage caused by his actions..
Given that the company is extremely unlikely to collect their money, seems fair to me.
The US actually sank three of these subs to keep them out of Soviet hands.
Only four where ever started, one was bombed in the ship yard and abandoned before it was finished and the other three where scuttled by US forces in various locations to keep the Soviet's from inspecting them. The end of WW2 was an interesting time to say the least.
Sure, if you want to be *sure* you can make sure to have 30 feet for interconnects. Might be overkill, but hey. Most offices should not have a problem with staying well under ~300 feet if you plan for it and put your wiring closets 150 feet apart. But hey...
True, but you only really need to protect the Engine Management computer which in all the cars I own is under the hood to keep the engine running. Running from the cops really just involves keeping the engine running and the drive train in gear. All you need to do is filter everything at the firewall and close up the Faraday cage of the engine compartment. If you radio won't play the sound track for the dukes of hazard is really of no importance when running from the cops.
In which case this guy works for idiots who forgot to plan for network cables to go with all the power cables and his goose is cooked anyway.
Ahhh Yes.. The same argument made for ESD. Are you wearing a wrist strap when you rummage around inside your desktop?
Look, I won't argue too strongly that your theory isn't possible, only that it's not likely. Upsetting a processor is not generally going to cause it permanent damage. It's easy to get a processor off in the weeds though disrupting an address line or data line in such a way that the system just doesn't function as desired because the programs execution got disrupted because a bit or two got corrupted by injected noise. Assembly programs (actually all of them) can get off in the weeds pretty quick if you let me change a bit or two on the address lines or data being fetched. There is nothing wrong with the processor or anything else, except that it's off happily fetching it's next instruction from the wrong place. The execution was "upset" by the induced noise, but nothing need be damaged, even slightly to make it happen. You just need to induce some small signal at the right place and time and a 1 becomes a 0 or a 0 becomes a 1. Such signals can be well within the designed capacity for all the components involved at the card level.
Depends on the frequency spectrum being used and the duty cycle, but you make a fair point. MRI machines use really strong magnetic fields. They are pretty safe things for human flesh because the frequency and duty cycles used does not heat up things that much. Microwave ovens and classical "radar" frequencies can and do present a danger though heating.
Personally, I'd be more worried about the nut aiming and firing the device getting some kind of dangerous exposure... But I suppose we can deal with that other ways.
EMP protection is just EMI shielding for really high energy pulses with very fast rise times and long durations. So it is generally done in two stages. First is to filter out the high frequency energy with enough parallel capacitance to shunt it to ground, series inductance to slow the rise time followed by a means of dumping the voltage spikes to ground though an MOV. The second thing you do is avoid coupling of the EMP by providing a Faraday cage (shielding and metal boxes) or using non-conductive wiring (i.e. optical cables for data communication).
In the end it is the same techniques used for EMI resistance, just tailored for the typical EMP pulse.