11th Grader Invents a Flashlight Powered by Body Heat
Think about that for a moment: a flashlight that shines for as long as you hold onto it. No more scrambling for and chucking away AA batteries. It could have an immediate impact on more than 1.2 billion people -- one-fifth of the world's population -- who, according to the World Bank, lack regular access to electricity.
Stunningly, no one on record has thought to use thermoelectric technology to power a flashlight. But for Ann, peltier tiles, which produce an electrical current when opposite sides are heated and cooled at the same time, were a convenient solution to a friend's study problem.
Like what you see? Follow our WhatsApp channel for more.
Trending Now
"Unschooling" aunt hires 23-year-old niece to tutor her homeschooled 13 and 9-year-old children, doesn't like it when she's told that she's the problem: ‘She started crying, said she didn’t feel very supported, and hung up’
01
Wealthy non-profit volunteer works for free for 15 months, then gets accused of inaccurately reporting his hours, so he sends a $60,000 invoice to HR: ‘I didn't need the money, so I never billed for my hours’
02
40-year-old coworker, fresh off her own extended maternity leave, pressures 24-year-old colleague into surrendering her pre-approved PTO vacation and drags in management and staff for backup: ‘ I can’t give up my time. This trip means a lot to me’
03
Parent of 15-year-old refuses to buy her cell phone, offers her pay-phone quarters instead: 'She says it's affecting her social life'
04
Chef makes an effort to bake cakes for coworkers' birthdays, only to have none of them do anything for her birthday, she refuses to keep the tradition: ‘It's not worth the effort’
05