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2. Tested: The Best LED Headlights of 2023 - AOL

   www.aol.com/tested-best-led-headlights-2023...

   As automotive lighting improves, LEDs are emerging at the lead. Offering remarkable vision and longevity, they are a go-to for many safety-minded drivers.

3. List of automotive light bulb types - Wikipedia

   en.wikipedia.org/wiki/List_of_automotive_light...

   Replaceable Light Sources for Vehicle Headlamps; Bulb Type Trade Number Cap (Base) Filaments Nominal power @ 12.8v (High/Low beam where applicable) Comments Image HB1 9004 P29t 2 65 / 45 W HB2 9003 P43t-38 2 60 / 55 W H4 with stricter geometric tolerances HB3 9005 P20d (90°) 1 65 W HB3A 9005XS P20d (straight) 1 65 W HB3 w/180° straight base ...

4. Headlamp - Wikipedia

   en.wikipedia.org/wiki/Headlamp

   Audi showed the Audi Nuvolari concept car with LED headlights in 2003. [118] [119] [120] Automotive headlamp applications using light-emitting diodes (LEDs) have been undergoing development since 2004. [121] [122] In 2004, Audi released the first car with LED daytime running lights and directionals, the 2004 Audi A8 W12. [123] [124]

5. List of vacuum tubes - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_tubes

   Light bulbs since 1911 under the Belgian Mazda brand Electronic tubes since 1924 under the Adzam ("Mazda" spelled backwards) brand [ 18 ] Note: EdiSwan also used the Mullard–Philips scheme .

6. List of RAL colours - Wikipedia

   en.wikipedia.org/wiki/List_of_RAL_colours

   Light ivory: Mandatory for all steel work in P&G / mandatory for taxis in Germany since 1971, although in limited states only in recent years. RAL 1016: Sulfur yellow: Standard European ambulance colour in accordance with CEN 1789. [2] RAL 1017: Saffron yellow: RAL 1018: Zinc yellow: RAL 1019: Grey beige: RAL 1020: Olive yellow: RAL 1021: Colza ...

7. Dark matter - Wikipedia

   en.wikipedia.org/wiki/Dark_matter

   He attributed it to either light absorption within the galaxy or modified dynamics in the outer portions of the spiral, rather than to unseen matter. Following Babcock's 1939 report of unexpectedly rapid rotation in the outskirts of the Andromeda Galaxy and a mass-to-light ratio of 50; in 1940, Oort discovered and wrote about the large non ...