Most TV remote controls send signals to the TV using what?
AnswerInfrared light
A remote flashes invisible infrared light in coded pulses that the TV's sensor reads.
Tech · Facts & stats
Television facts & stats
7 fact-checked facts about television, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What does LCD stand for?
AnswerLiquid Crystal Display
LCD screens use liquid crystals to control how much backlight passes through each pixel.
Going deeper
Which Scottish inventor gave the first public demonstration of a working television in 1926?
AnswerJohn Logie Baird
John Logie Baird demonstrated moving television images to an audience in London in 1926.
Older bulky TVs used a picture tube called a CRT. What does CRT stand for?
AnswerCathode Ray Tube
A cathode ray tube fires electron beams at a phosphor-coated screen to make it glow.
What is the standard aspect ratio of an HD widescreen TV?
Answer16:9
HD widescreen pictures are 16 units wide for every 9 units tall.
Expert level
Which American inventor built the first fully electronic television system, using an 'image dissector'?
AnswerPhilo Farnsworth
Philo Farnsworth transmitted his first electronic image in 1927 using his image dissector tube.
What makes an OLED screen different from a standard LCD?
AnswerEach pixel produces its own light
In an organic light-emitting diode display, each pixel glows by itself, so no backlight is needed.
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