This is what the FBI's fingerprint files looked like in 1942:
FBI was adding 400,000 file cards a month to its archives, and was receiving 110,000 requests for “name checks” per month. By 1944 the agency contained some 23 million card records, as well as 10 million fingerprint records.
This method is fundamental to how modern displays, including computer monitors, TVs, and smartphone screens, produce color images. By varying the intensity of these three primary colors, screens can create millions of different colors.
The stronger the competition, the stronger your comebacks—and your abs!—and maybe your appetite too!
I've been wondering, what motivational quotes stick in your mind?
China has officially entered the era of “flying taxis”.
Two Chinese companies have obtained the commercial operation certificate for autonomous passenger drones from CAAC.