Reviews Spectrums: Our Mind-boggling Universe from Infinitesimal to Infinity by David Blatner Share this:EmailFacebookTwitterPinterestPocketRedditPrint By Science News January 10, 2013 at 6:59 pm Explore the wonders of six kinds of spectra — numbers, light, sound, size, heat and time — that define the universe. Walker & Co., 2012, 183 p., $25