co-inventor of the blue LED, a major breakthrough in lighting technology. For this achievement, Nakamura, together with Isamu Akasaki and Hiroshi Amano, received the Nobel Prize in Physics in 2014.

https://en.wikipedia.org/wiki/Shuji_Nakamura

#ShujiNakamura #chemistry #chemie #physics #physic #led #blueLED #whiteLED #nobelPrice

#Insects trapped by a #streetlight. A 5 second footage.

Now imagine all the street lamps that are also turned on. Imagine all the light sources that are turned on, dusk to dawn. Not for 5 seconds. All-night.

How can this be so underrated?

This is a clear example of a major #impact caused by a "convenience", not a necessity.

#Anthropocene #WhiteLED #LED #ALAN #ArtificialLlightAllNight #Biodiversity #LightPollution #PoluiçãoLuminosa #LEDbranco #LuzArtificialÀNoite #Biodiversidade #antropoceno

Another excellent article by Paul Marchant and Paul Norman, demonstrating the non-detection of road (and criminal) safety benefits of road lighting nor in the recent replacements from sodium #HPS to #LED (in particular, #whiteLED ). It questions the high public investment in road lighting when that supposed benefit is not verified, & recalls the impacts of #artificiallight at night.
https://academic.oup.com/jrssig/article-abstract/20/3/30/7190566?login=false

#poluiçãoluminosa #lightpollution