3 ms·
>By 1880, Langley's bolometer was refined enough to detect thermal radiation from a cow a quarter of a mile away. Sidenote: that sounds like even F-22/35 shoul
by trhway 6y ago
>By 1880, Langley's bolometer was refined enough to detect thermal radiation from a cow a quarter of a mile away.
Sidenote: that sounds like even F-22/35 should be visible half a globe away in IR
- schoen 6y agoBe careful of that inverse square law—it's a doozy!