A shaking lantern, also faraday lantern, is a flashlight that is charged via linear induction by shaking the lantern back and forth Stock Photo - Alamy
physics faraday perpetual flashlight| Alibaba.com
CLISPEED 6 Pcs Rechargeable Lantern Shake Flashlight Go Dark Faraday Bags for Cell Phones Hand Press Torch Emergency Flashlights Phone Pouch Small Flashlights Bulk Led Manual Plastic - Amazon.com