When was the first black and white tv invented?

Answer American engineer Philo T. Farnsworth invented the first black and white TV in 1926. His dissector tube used a stream of electrons to project horizontal lines of a moving image onto a screen.Source... Read More »

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When were white board erasers first invented in the U.S.?

The first whiteboard eraser was patented as number 4937910 on July 3, 1990. It was invented by Thomas G. Frazier, who applied for the patent on November 30, 1988. The cover was made of a chemical-r... Read More »

Back then when the world had black and white tvs,were there black and white computers too?

There was almost only text on computers, just text.

Who first used black and white photography as an art?

If i have colored ink only and want to print a black and white text will it come out black and white?

It depends. The answer is Yes if the printer doesn't normally have a black ink cartridge. If it normally does have one it will probably not be black and white.Just a quick why. Some printers mak... Read More »