> [CRTs] respond colourfully to magnets (also magic) held to their screens by curious children [...].
Look at the reflection of an LCD (not LED) panel in a non-conductive surface and try tilting it! (A glass window at night, a glass bathroom door, or a piece of furniture with a shellac finish works.) Hint: Brewster’s law.
Doesn’t detract from the article, just ... LCDs have some of the good kind of magic in them, too! Feynman talked about “sun reflecting on bay”[1], but “tablet reflecting in bathroom door” is even better I think.
Look at the reflection of an LCD (not LED) panel in a non-conductive surface and try tilting it! (A glass window at night, a glass bathroom door, or a piece of furniture with a shellac finish works.) Hint: Brewster’s law.
Doesn’t detract from the article, just ... LCDs have some of the good kind of magic in them, too! Feynman talked about “sun reflecting on bay”[1], but “tablet reflecting in bathroom door” is even better I think.
[1] http://calteches.library.caltech.edu/46/2/LatinAmerica.htm