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2. Mars Light - Wikipedia

   en.wikipedia.org/wiki/Mars_Light

   A Mars Light is mounted in the lower lamp housing on this EMD F7 diesel locomotive. More detail can be seen at high resolution. Mars Lights are signal-safety lights used in the United States and built by Mars Signal Light Company for railroad locomotives and firefighting apparatus. Mars Lights used a variety of means to cause the light to ...

3. Airglow - Wikipedia

   en.wikipedia.org/wiki/Airglow

   Airglow over Auvergne, France Yellow, green and red bands of airglow along Earth's limb as seen from space. Airglow (also called nightglow ) is a faint emission of light by a planetary atmosphere . In the case of Earth's atmosphere , this optical phenomenon causes the night sky never to be completely dark, even after the effects of starlight ...

4. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   The toggle light switch was invented in 1916 by William J. Newton. [2] As a component of an electrical wiring or home wiring system, the installation of light switches is regulated by some authority concerned with safety and standards. In different countries the standard dimensions of the wall mounting hardware (boxes, plates, etc.) may differ.

5. Product key - Wikipedia

   en.wikipedia.org/wiki/Product_key

   Product key on a Proof of License Certificate of Authenticity for Windows Vista Home Premium. A product key, also known as a software key, serial key or activation key, is a specific software-based key for a computer program. It certifies that the copy of the program is original. Product keys consist of a series of numbers and/or letters.

6. Decorating for the holidays could be hazardous to your health ...

   www.aol.com/news/decorating-holidays-could...

   Safety urged: California man electrocuted while hanging Christmas lights Here are some safety tips to remember this holiday season: The CPSC recommends people make sure their live Christmas tree ...

7. Puzzle solutions for Sunday, Dec. 1, 2024

   www.aol.com/news/puzzle-solutions-sunday-dec-1...

   Note: Most subscribers have some, but not all, of the puzzles that correspond to the following set of solutions for their local newspaper. CROSSWORDS