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2. Mechanically powered flashlight - Wikipedia

   en.wikipedia.org/wiki/Mechanically_powered...

   The best designs use a supercapacitor instead of a rechargeable battery, since these have a longer working life than a battery. This, along with the long-life light-emitting diode which does not burn out like an incandescent bulb, give the flashlight a long lifetime, making it a useful emergency light. A disadvantage of many current models is ...

3. Flashlight - Wikipedia

   en.wikipedia.org/wiki/Flashlight

   Some rechargeable flashlights have indicators for the state of charge of the battery. Power-failure lights are designed to keep their batteries charged from a wall plug and to automatically turn on after an AC power failure; the power-failure light can be removed from the wall socket and used as a portable flashlight.

4. This Is How Often You Should Be Cleaning Your Shower Curtain

   www.aol.com/lifestyle/often-cleaning-shower...

   “For shower curtain liners, you can fill your tub with warm/hot water, add a tablespoon of natural laundry detergent and one-quarter of a cup of baking soda,” says Sokolowski. “Let it soak ...

5. Shower-curtain effect - Wikipedia

   en.wikipedia.org/wiki/Shower-curtain_effect

   The shower-curtain effect in physics describes the phenomenon of a shower curtain being blown inward when a shower is running. The problem of identifying the cause of this effect has been featured in Scientific American magazine, with several theories given to explain the phenomenon but no definite conclusion.

6. First meteor shower of 2025 to light up the night sky

   www.aol.com/first-meteor-shower-2025-light...

   The first meteor shower of the year is expected to light up the sky on Friday night, with stargazers in the UK to see up to 50 “shooting stars” an hour. The Quadrantid meteor shower, which ...

7. Popular meteor shower will light up Washington skies this ...

   www.aol.com/popular-meteor-shower-light...

   The Perseid meteor shower will peak between Sunday night and early Monday morning and roughly 50 meteors per hour will be in the night sky. Popular meteor shower will light up Washington skies ...

8. Output signal switching device - Wikipedia

   en.wikipedia.org/wiki/Output_Signal_Switching_Device

   The device usually acts as the interface of a sensor (such as a light curtain), designed to signal a safety-related event, typically when the light curtain beam's being "broken". OSSD signals are the outputs from the protective device (light curtain or scanner) to a safety relay. OSSD outputs are typically semiconductor or transistor outputs ...

9. Quadrantid meteor shower to light up skies with dazzling ...

   www.aol.com/quadrantid-meteor-shower-light-skies...

   The Quadrantid meteor shower — one of the best annual meteor showers — will be peaking overnight from Thursday to Friday, producing "fireball" brightness and up to 120 shooting stars per hour ...