While you may think that a larger lens would be able to produce fire with moonlight as it can collect more light, or focus it ...

Fully-charged battery can make LED light last continuously for 6-7 hours. LENSES: Magnifying glass come with 4 replaceable lens at 1.5X, 2.0X, 2.5X, 3.5X maginification,Each lenses are different ...

USEFUL TOOLS FOR STEM LEARNING: The Get Out! Magnifying Glass Kids Set is a 6-pack set of large-sized glass magnifier for kids; Each handheld magnifying glass allows young scientists hands-on ...

a lot of us don’t have that luxury and instead must rely on magnifying glasses and loupes. [Mauro]’s project for the Hackaday Prize makes wearing these loupes and lenses even easier by adding ...

a lot of us don’t have that luxury and instead must rely on magnifying glasses and loupes. [Mauro]’s project for the Hackaday Prize makes wearing these loupes and lenses even easier by adding ...

On the other end of the scale, there are ornamental magnifying glasses, designed for light use ... Weighing just 90g, there are two zoom lenses - 30x and 60x along with LED lights to illuminate ...