Blog Archives

iOS Night Shift

Back in 2014, I posted about the effects of blue light on sleep and recommended F.lux freeware, which adjusts your computer monitor settings to gradually reduce the amount of blue light emitted as night falls.  F.lux also created an iOS app, which was

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The New Makerspace at Boulder Public Library

Otherwise known as “BLDG 61“.  No aliens, but I did find a suspicious number of orange octopi and a spaceman. Today I took a CAD and 3D printing class at Boulder Public Library’s new Makerspace.  First they got us up to speed with Autodesk’s Tinkercad,

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IODC 2017 to be held in Denver, CO

The International Optical Design Conference (IODC) will be held next year in nearby Denver, CO!  Represent!

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2015 is the Year of Light!

Yes, it’s January 1st, not April 1st (I checked) and the U.N. has just proclaimed 2015 as the International Year of Light and Light-based Technologies (IYL 2015). Check out the linked website for a list of talks, workshops, exhibitions, and competitions,

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Philae and Rosetta asked me to pass this along…

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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

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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.

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