Year: 2014

  • Philae and Rosetta asked me to pass this along…
  • Blue Light, Circadian Vision, and Life after Dark

    The master circadian clock, located in the brain’s suprachiasmatic nucleus (SCN), helps us sync to the sun-earth 24-hr cycle, for wakefulness during the day and a good night’s sleep after dark.  Blue light (i.e., ~460-480 nm), detected by the eye’s melanopsin retinal ganglion cells (mRGCs), is one of the SCN’s primary environmental cues.  It tells the…

  • A new edition of Introduction to Radiometry and Photometry has been published

    Congratulations to Ross McCluney!  I’ve just received a gratis copy as thanks for having modestly contributed to the chapter on ray tracing.  Ross has made a lot of updates to his classic 1994 text and I’m looking forward to reading it.

  • optica: A New Open-Access Journal from OSA

    optica: A New Open-Access Journal from OSA

    Authors can get their work published free of charge during the first year of Optica, a highly selective, open-access optics journal from the Optical Society of America (OSA).

  • Boulder Startup Week

    Boulder Startup Week has gotten off to a really great start.  Giant kudos to Andrew Hyde, the BSW Team, and the rest of the startup community for making it happen. This morning at Agora at the Riverside, they had a terrific lineup of speakers from the Boulder “Maker” community.  One of the most interesting to me, as…

  • Happy Birthday, Hubble!

    Happy Birthday, Hubble!

    Image Source: Hubblesite.org The Hubble Space Telescope was conceived in 1923, approved by NASA in 1969, and approved by Congress in 1977. Designing and building Hubble was a coordinated effort between NASA Centers and universities, as well as private companies, including Perkin-Elmer Corp. and Lockheed Missiles. It was finally launched on April 24, 1990 and…

  • Meet your Maker

    I am very excited to attend the 1st Annual Denver Mini Maker Faire on May 3rd and 4th. From the website, “Maker Faire is an annual festival to make, create, learn, invent, craft, hack, recycle, build, think, play and be inspired.” If you want to learn how to send Morse Code via Arduino, build your own…