Statistics for Technology by Letter: L

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Hint	Answer	% Correct
Portable computer	Laptop	94%
Prevents a door from being opened	Lock	94%
Edison's brightest invention	Light bulb	88%
Battery type often used for portable electronics	Lithium-ion battery	88%
Open-source operating system	Linux	82%
Coherent light beam	Laser	76%
Substance used to reduce friction	Lubricant	76%
More energy-efficient means of illumination	Light-emitting diode (LED)	71%
Curved piece of glass with a focus	Lens	65%
A train's engine car	Locomotive	59%
Computer screen technology using polarization	Liquid-crystal display (LCD)	53%
Substance to keep anything at -196°C/-320°F/77K	Liquid nitrogen	41%
Weaving the warp and the weft	Loom	41%
Sturdy skin product	Leather	24%
Maritime navigational aid	Lighthouse	12%
Tool to express online approval	Like button	6%