Hacker News
- Spectrum OS: a declarative, reproducible, compartmentalized Linux https://spectrum-os.org/ 134 comments
- Fake window reproduces sunlight from around the world (full-spectrum LED lighting system - Rayleigh scattering - light also refracted at an angle) http://www.springwise.com/fake-window-reproduces-sunlight-world/ 37 comments technology
- Can we reproduce every wavelength of the electromagnetic spectrum? http://astronomyonline.org/Science/Images/EMSpectrum.gif 13 comments askscience