Statistics for Technology by Letter: L

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Hint	Answer	% Correct
Portable computer	Laptop	93%
Prevents a door from being opened	Lock	93%
Edison's brightest invention	Light bulb	87%
Battery type often used for portable electronics	Lithium-ion battery	87%
Open-source operating system	Linux	80%
Coherent light beam	Laser	73%
Substance used to reduce friction	Lubricant	73%
More energy-efficient means of illumination	Light-emitting diode (LED)	67%
Curved piece of glass with a focus	Lens	60%
Computer screen technology using polarization	Liquid-crystal display (LCD)	53%
A train's engine car	Locomotive	53%
Substance to keep anything at -196°C/-320°F/77K	Liquid nitrogen	40%
Weaving the warp and the weft	Loom	33%
Sturdy skin product	Leather	27%
Maritime navigational aid	Lighthouse	13%
Tool to express online approval	Like button	7%