Comment: A decent insurance policy... (Score 1) 341
and inexpensive protection for sensitive expensive devices. A close-by lightning hit can toast most anything, so forget about it. If you want to install a motor-generator for the whole house, get a second mortgage and plan to pay for the extra energy it will waste. Lightning may damage the motor side but might not hurt anything connected to the generator.
Most of the damage my stuff has received during storms has been through low voltage connections (phone lines, network cabling, coax) caused by inductive spikes. Use protection on these connections and/or eliminate them (WiFi, TOSLink, etc).
Comment: Re:Photographic prints! (Score 1) 350
Comment: a sound only for those in the way (Score 1) 402
Some have demonstrated a device that can project a sound to the vicinity of someone's head that will hardly be heard elsewhere, I think the demo was up to 30 feet away, which is good for parking lots, and I bet that will be greatly improved upon. So the car remains silent except to those in the path or converging. Yes, this will take some visual sensors and processing. This IS Slashdot.
The best part is that the "noise" can be personalized. Think of the possibilities.
Comment: Re:any sound in the world.... (Score 1) 402
Yes! Except your observation is based on most V8s, which have "cross-plane" or "90 degree" crankshafts. Those with "flat" or "180 degree" cranks sound great, as they are even-firing. I'm only aware of a few flat-crank V8 designs, specifically those from Lotus and Ferrari. Flat crank designs have second-order vibrations (not unlike inline 4s), but that isn't so important in 1) sports cars, and 2) engines under 4 litres.
I don't like the "V8 burble" so popular with (Chevelle, for example) fans and hate the sound of a V-twin. Incidentally, cross-plane V8s sound a lot better when there's a "balance pipe" connecting the left and right exhausts before they exit. It can add a little power, too, if designed properly.
V12, yes, the engine of serious luxury and some of the most interesting sports cars (XKE Series 3, XJ13, McLaren F1, old Packards... and the Rolls-Royce Merlin powering WWII Spitfires and Mustangs!
Comment: Re:any sound in the world.... (Score 1) 402
I'll have to go looking for the sound of a ramjet. However, I hear the sound of pulsejets, V1 "buzzbombs," was both interesting and dreaded.
I couldn't believe my eyes when I first started reading the comments for this article. Some people on Slashdot were actually OK with being told they had to have a noisemaker on their car.
My car will be so fast that no one will be able to hear it before it arrives, and then the sound will be very loud.