Technology by Letter: L

Answer these questions from the world of tech. The answers all start with L.

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Last updated: September 13, 2018

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First submitted	September 13, 2018
Times taken	15
Average score	56.3%
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Hint	Answer
Edison's brightest invention	Light bulb
More energy-efficient means of illumination	Light-emitting diode (LED)
A train's engine car	Locomotive
Computer screen technology using polarization	Liquid-crystal display (LCD)
Curved piece of glass with a focus	Lens
Coherent light beam	Laser
Prevents a door from being opened	Lock
Tool to express online approval	Like button
Open-source operating system	Linux
Maritime navigational aid	Lighthouse
Sturdy skin product	Leather
Weaving the warp and the weft	Loom
Substance to keep anything at -196°C/-320°F/77K	Liquid nitrogen
Substance used to reduce friction	Lubricant
Portable computer	Laptop
Battery type often used for portable electronics	Lithium-ion battery

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