Audio recordings, digitizing: How are old vinyl records converted to a digital recording?
Camera, green flash: How do you take a picture of a green flash?
Camera, star photo: When NASA and astronomers photograph celestial bodies, how do they decide which way to orient the camera and images? In space there is no up or down nor any anchor orientation point (i.e., north/south).
Camera, zoom: What's the difference between digital and optical zoom?
Closed TV captions: Hidden TV messages in every show you watch, how do they work?
Fiddles:  What's the difference between a violin and a fiddle?
Movie film, alignment: In the movie, "Tomb Raider," is it possible for all the planets to line up as perfectly as they showed?
Movie films, digitizing: How are old movie films converted to a digital recording?
Movie wheels go backwards: why do wagon wheels on TV movies appear to reverse directions?
Roman music: At Easter, I saw the movie "Ben Hur" on TV and trumpet players played a tune. How do we know what Roman and Greek music sounded like?
Singing goblets: What causes crystal water goblets to "sing" when you run a wet fingertip around their rim?
VCRPlus+® codes: cryptic but handy, how do they work?
VCRPlus+® codes: April, I am not looking to break the code on the VCR Plus deal. I only want to find a place online where I can get codes for individual programs.