3 ms·

Isn't low pressure sodium vapor a dead technology?

• imoverclocked 5y ago
  It's still used ... so, no?
  • kunai 5y ago
    High pressure sodium is very common and still available. Low pressure sodium is extinct. The last LPS lamp was made in 2018 I believe. It's a shame, because LPS was the gold standard for astronomy as the hyperspecific emission spectrum made it extremely easy to filter out for astrophotographers and telescope users
    • adgjlsfhk1 5y ago
      it's totally possible to make leds with similar properties, but it's generally but done because narrow spectrum lighting messes with color perception