Japan’s Eshima Ohashi Bridge

Concerned? Not to worry, Japanese engineers know what they’re doing.

Posted in Optical Illusion, Photography Tagged with: ,

The Mystery of the Glass Doorknob Fire

An ominous photo has been posted a few times on Reddit, showing fire damage attributed to a glass doorknob illuminated by sunlight. Any thoughts after seeing the linked photo?  Could you convince a jury of the doorknob’s guilt or innocence? At first

Posted in Optics, Zemax Tagged with: , , ,

Focused Reflections from Architectural Windows or: How I Learned to Stop Worrying and Love the Death Rays

If you haven’t already heard of the notorious “death rays” created by solar reflections off the concave faces of the Vdara Hotel and 20 Fenchurch Street, I’d recommend reading the entertaining article, “A Brief History of Buildings that Melt Things”.  Easy to laugh when it’s not your

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Diffractive Lens vs. Google Cardboard’s Asphere

As I mentioned in my last post, Google Cardboard is the interim hardware for developing Daydream apps.  The lenses look very similar to those used in the Oculus Rift development kits, although a bit faster and smaller in diameter.  The field of

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Google Daydream is a Virtual Reality

At Google I/O on Wednesday, Clay Bavor announced Daydream, which is Google’s new platform for high-quality mobile VR.  It will be released this fall in conjunction with VR-optimized Android N.  The hardware will consist of a headset and controller that can be used with any

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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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Fresnel Lenses and the Oculus Rift CV1

The new consumer version of the Oculus Rift has just been released and there’s been a lot of buzz about the new hybrid fresnel lenses and how they compare with those in the HTC Vive Pre. Incidentally, based on the reviews,

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