In 1998, TV sportscasters started using special computer technology to draw a bright yellow “first down” line on football fields during broadcasts. It looks like it’s on the grass, but it’s really added into the TV picture — the players on the field can’t see it!
Inventions And Technology - Facts for Kids

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Random Facts About Inventions And Technology For Kids
The small size and light weight of iPads mean they require less fuel to transport from factories to stores compared to larger computers.
Some bacteria have a built-in motor that spins their tail like a propeller — it’s like nature’s version of a little wheel!
The development of better wheels helped cities grow by making transportation more efficient.
Tattoo artists use AR apps to preview how designs will look on customers' bodies before applying the permanent ink.