Post in Stream of Goodies

Stream of Goodies

Hacker News: Front Page

·2 years ago

shared a link post in group #Stream of Goodies

ehs.lbl.gov

Light and Infrared Radiation

Visible light is generally defined as the portion of the electromagnetic spectrum between 380–400 nanometers (nm) and approximately 760 nm. Within the visible light spectrum, blue light (400–500 nm) i

Comment here to discuss with all recipients or tap a user's profile image to discuss privately.

Embed post to a webpage :

<div data-postid="dbngrgy" [...] </div>

Powered bySelect·iOS·Android

PrivacyTerms