3 ms·
I wonder how they will manage the heat when parked in the sun. Being an ideal absorber does not seem like a good quality for a car to have.
by thexa4 7y ago
I wonder how they will manage the heat when parked in the sun. Being an ideal absorber does not seem like a good quality for a car to have.
- tempestn 7y agoI doubt it'd be too much worse than a regular black car parked in the sun.
- jtbayly 7y agoI'm pretty sure regular black paint has aluminum to reflect a lot of energy back out.
- m0zg 7y agoActually, no. Our perception of light is logarithmic, so what we perceive as "middle gray" only reflects 18% of the light, with darker shades reflecting exponentially less. Our perception of sound is also logarithmic BTW, so a 100W speaker is nowhere near 10x as loud as a 10W one, nor 100x as loud as 1W.
- jtbayly 7y agoI thought I had read something about it reflecting outside of the visible range. Could be mistaken.
- mauvehaus 7y agoAll else being equal, and ignoring the question of perceived loudness, (massive hand-waving ahead), shouldn't a power of 10 increase in speaker wattage result in, at best, a sqrt(10) increase in loudness since that power is used to drive something with area to actually move the air?
- Someone 7y agoNo. Ten times the power gives you ten times the power/m^2 at the same distance. The distance at which you can hear the sound (in first order approximation) _does_ scale by a factor of √N if you increase power by a factor N, but that’s not normally how one defines loudness.
- layoutIfNeeded 7y agoIt will radiate it away as IR light.