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  2. History of street lighting in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_street_lighting...

    In New Orleans, arc lamps were used for street lighting starting in 1881. In 1882, the New Orleans Brush Lighting Company installed one hundred 2,000-candlepower arc lamps along five miles of wharf and riverfront; by 1885, New Orleans had 655 arc lights. [1] In Chicago, arc lamps were used in public street lighting starting in 1887. [1]

  3. Nick Holonyak - Wikipedia

    en.wikipedia.org/wiki/Nick_Holonyak

    Nick Holonyak Jr. (/ h ʌ l ɒ n j æ k / huh-LON-yak; November 3, 1928 – September 18, 2022) was an American engineer and educator.He is noted particularly for his 1962 invention and first demonstration of a semiconductor laser diode that emitted visible light.

  4. LED street light - Wikipedia

    en.wikipedia.org/wiki/LED_street_light

    An LED street light based on a 901-milliwatt output LED can normally produce the same amount of (or higher) luminance as a traditional light, but requires only half of the power consumption. LED lighting does not typically fail, but instead decreases in output until it needs to be replaced. [ 2 ]

  5. “History Cool Kids”: 91 Interesting Pictures From The Past

    www.aol.com/lifestyle/history-cool-kids-91...

    Image credits: historycoolkids #3. This is the grave of Leonard Matlovich. After serving three tours in Vietnam, Matlovich became a recipient of the Bronze Star and Purple Heart.

  6. Charles Adler Jr. - Wikipedia

    en.wikipedia.org/wiki/Charles_Adler_Jr.

    Charles Adler Jr. (June 20, 1899 – October 23, 1980) was an American inventor and engineer.He is most known for developing devices meant to improve transportation safety, including sonically actuated traffic lights, colorblind road signals, pedestrian push-buttons, and flashing aircraft lights.

  7. What's up with the mysterious purple streetlights at the ...

    www.aol.com/news/whats-mysterious-purple...

    Some street lights at Palm Beach County intersections are turning a bright shade of purple. According to Florida Power & Light, the reason is because of a manufacturer defect in some LED lights.

  8. Timeline of electrical and electronic engineering - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_electrical_and...

    Russian engineer Pavel Yablochkov invented the electric carbon arc lamp. 1876: Scottish inventor Alexander Graham Bell patented the telephone. 1877: American inventor Thomas Edison invented the phonograph. 1877: German industrialist Werner von Siemens developed a primitive loudspeaker. 1878: First electric street lighting in Paris, France 1878

  9. Why are so many street lights out in Milwaukee right now? - AOL

    www.aol.com/why-many-street-lights-milwaukee...

    A purple light is seen 422 N. 15th Street in Milwaukee on Friday, July 2, 2021. Many have noticed purple-hued streetlights on the interstate throughout the Milwaukee area.