Enter the Hollow Flashlight, which works according to the thermoelectric effect—creating electric voltage out ... making some changes to the circuit design might turn a page.

lightweight energy storage plagues everything from flashlights to electric cars. But what if you could bypass it altogether? That’s what Ann Makosinski of Canada has done with her Hollow ...

A 15-year-old high school junior from Victoria, British Columbia, Ann Makosinski, created a hollow flashlight powered ... she reworked the circuit to allow for transformers, which would help ...

A hollow flashlight powered by the ... an online report submitted to Google. Finally, the circuit worked. Makosinski made two different flashlights, each using a slightly different kind of Peltier ...

Makosinski realized she could use these tiles to create energy for her flashlight if she left the device hollow. Holding the ... that issue she created a circuit that would allow for transformers ...

If the idea sounds familiar, you may remember the "Hollow Flashlight," a device created by 15-year-old Anne Makosinski for Google's 2013 Science Fair. They work by the same principle, but the ...