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2. These Are the Best Handheld Spotlights for Your Emergency ...

   www.aol.com/8-best-handheld-spotlights-home...

   Rechargeable LED Handheld Spotlight. This LE model features a front-facing spotlight and a large side lantern for added versatility. Its bright green color is easy to spot quickly in an emergency ...

3. Maddox rod - Wikipedia

   en.wikipedia.org/wiki/Maddox_rod

   The Maddox rod is a handheld instrument composed of red parallel plano convex cylinder lens, which refracts light rays so that a point source of light is seen as a line or streak of light. [2] Due to the optical properties, the streak of light is seen perpendicular to the axis of the cylinder. [3] Maddox rod and pen torch used in Maddox rod testing

4. Emergency vehicle lighting - Wikipedia

   en.wikipedia.org/wiki/Emergency_vehicle_lighting

   Early emergency lights were often red lights mounted to the front or roof of a vehicle. The use of the blue emergency light originates in Germany during World War II. As a result of the "Verdunkelung", a black-out measure for aerial defense from 1935, cobalt blue was regulated to replace the red color used until 1938 in German emergency vehicle ...

5. Flashlight - Wikipedia

   en.wikipedia.org/wiki/Flashlight

   The first mass-produced dry cell batteries came in 1896, and the invention of portable electric lights soon followed. Portable hand-held electric lights offered advantages in convenience and safety over (combustion) torches, candles and lanterns. The electric lamp was odorless, smokeless, and emitted less heat than combustion-powered lighting.

6. These are the top 100 Black Friday deals, according to Walmart

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   5 car insurance myths debunked: From rate haggling to pricer policies for red cars. Food. Food. Simply Recipes. Martha Stewart’s secret ingredient for the best banana bread. Food. Southern Living.

7. Laser pointer - Wikipedia

   en.wikipedia.org/wiki/Laser_pointer

   Red (635 nm), blueish violet (445 nm), and green (520 nm) laser pointers. A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i.e. coherent light) to highlight something of interest with a small bright colored spot.

8. LED street light - Wikipedia

   en.wikipedia.org/wiki/LED_street_light

   The issues of large scale defective lights happened in many cities in United States and Canada. [19] [20] Malfunctioning LED street lights can cause them to flicker, creating a strobe light effect. [21] Partial power outages can also cause the same effect as the LED street lights can detect residual electrical current. [22]

9. 15 holiday gifts for dementia patients and caregivers ...

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   11. A memory phone can store photos with names and contact information. 12. Puzzles and activity books stimulate the brain and promote cognitive sharpness.. 13. Card games and board games ...