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ANN MAKOSINSKI

15-year-old builds flashlight powered by body heat: How her hollow aluminium tube generated electricity to keep an LED lit for more than 20 minutes
A 15-year-old Canadian student built a battery-free flashlight that uses the temperature difference between a warm human palm and cooler ai...
03 Sep, 2026, 01.16 PM IST
Six future technologies already here
From a ball with a camera embedded, to a flashlight that is powered by body heat, to a contact lens that zooms on its own.
11 Jul, 2013, 06.25 AM IST

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