"Amazing to think it was only a few decades since where just about every household had at least one CRT," Still got one to play games on. Reminds me of physics

"Amazing to think it was only a few decades since where just about every household had at least one CRT," Still got one to play games on. Reminds me of physics at High School and we get the part where the teacher, Thurgy (Mr. Thurgood) was explaining magnetism and electron fields and how CRTs work. Next class we get further explanation and the bonus story of one student ringing him at twelve o'clock at night asking how long before the purple blotches on the television will disappear before his parents got home? Student Tim had decided to get locate the largest magnet in the house and placed it over the screen to "just see what happens?". The blotches take about two hours depending on the strength of the magnet and if you don't damage the aperture grille. Can't do that with LED screens.