Hacker News
new
|
past
|
comments
|
ask
|
show
|
jobs
|
submit
login
betaby
on Sept 25, 2016
|
parent
|
context
|
favorite
| on:
Some cities are taking another look at LED lightin...
It's perfectly "seen". LED without filter has blue spike in spectrum.
http://www.ledsmagazine.com/content/dam/leds/PrintArticles/v...
Consider applying for YC's Spring batch! Applications are open till Feb 11.
Guidelines
|
FAQ
|
Lists
|
API
|
Security
|
Legal
|
Apply to YC
|
Contact
Search:
