did, by converting the TV into a crude oscilloscope. The trick is to take control of the two deflection coils that move the electron beam inside the CRT in the horizontal and vertical directions.

Instead of sweeping an electron beam across the screen from left to ... and even managed to put a clock on an oscilloscope. The key component of getting a vector display to work is the digital ...

A new proposal uses an electron beam fired from a stable platform near the Sun, which could push a 1,000 kg spacecraft for up to 100 AU (100 times the distance from the Sun to the Earth).