A joint-test effort has fixed a dangerous flaw in the F-35 Lightning II that was blinding KC-135 Stratotanker crewmen during night refueling operations. The Aerial Refueling Certification Agency, ...
The color temperature of a light, measured in kelvins, is its most noticeable characteristic. A candle, at 1900 K, appears orange. Daylight, at 5500 K, is much whiter and bluer. A 5500-K bulb, however ...
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