THIS LAMP SOXs! "Yellow" tech of bright metal vapor lamp. Beats modern LEDs in brightness per watt?

Having efficient light bulbs is great. It saves energy which gives you lower electricity bills and lower impact on the environment. So why have we stopped using the very energy-efficient low-pressure sodium vapor lamps?
In this video, I take a closer look at this vintage technology and compare it to modern, state-of-the-art LEDs. How do they compare in luminous efficacy and color rendering index?

My Patreon-page: https://www.patreon.com/Brainiac75

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Did you miss one of my videos?: https://www.youtube.com/user/brainiac75/videos

FULL MUSIC CREDITS
Time code: 0m:01s
'Long Note Two' Kevin MacLeod (incompetech.com)
ISRC: USUAN1100420

Time codes: 1m:00s + 7m:43s
'Perspectives' Kevin MacLeod (incompetech.com)
ISRC: USUAN1300027

Time codes: 1m:51s + 9m:57s
'Fluidscape' Kevin MacLeod (incompetech.com)
ISRC: USUAN1100393

Time code: 5m:01s
'Lightless Dawn' Kevin MacLeod (incompetech.com)
ISRC: USUAN1100655

Time codes: 5m:37s + 11m:30s
'Ossuary 6 - Air' by Kevin MacLeod (incompetech.com)
Parts from 0m:00s + 2m:34s into the music track.
ISRC: USUAN1500048

All music above licensed under Creative Commons: By Attribution 4.0 License
http://creativecommons.org/licenses/by/4.0/

Time code: 7m:18s
Mix of two tracks:
1) The Shimmering by fran_ky (freesound.org/s/237363)
Licensed under Creative Commons 0 license
2) "Spacial Harvest" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/
ISRC: USUAN1100653

#SOX #LPS #lamp

Видео THIS LAMP SOXs! "Yellow" tech of bright metal vapor lamp. Beats modern LEDs in brightness per watt? канала Brainiac75