the pioneers they dug it up
CM
yes he throw it at the teacher
i beileve it is the pencle snake at 4 in.
mine is 8cm without a eraser and you can still write with it
it is an obelisk to start and it is coping the Egyptians because that is what the USA does
Patrick tamer bowie invented led signs in 1979
A standard, #2, hexagonal pencil is 19 cm (7.5 in) long.
"Nick Holonyak, 75, invented the LED (light emitting diode) in the 1960s."
I don't know about LED TV but i know LED (Light Emitting Diodes) was invented in 1962 so most likely not too long after that.
Russia 1920
1974
LED was not actually invented, but discovered. It was discovered by H.J. Round in the year 1907 through a crystal of silicon carbide.