Brightener in Free & Clear ...

warren | 2 spectra | 0

I'm just attempting an analysis of JoshMC's work at http://publiclaboratory.org/notes/joshmc/4-28-2012/setup-uv-testing-specrtrometer#comment-1175 -- compared to a tap water sample, the laundry det...

Sunlight through glass

warren | 5 spectra | 0