The hours I spend in the physics and chemistry labs of St. Lawrence University make me a bit inured to the optical shenanigans occurring when we take Raman spectra of the materials my students synthesize. Still, the effect is pretty fantastic. The grainy pattern of the laser on surfaces around lab is fantastic, but the fluorescence ink on the post-it note in the foreground fluorescing aggressively is pretty cool, too.

Homebuilt Raman Apparatus

That violet-blue light in the background of the shot above is the 405 nm laser we use to initiate photochemical processes. The beam is poorly detected by the camera’s sensor, but the slightest hint of it is visible in the upper third of the image below.

405 nm

Transbay Tower Grating Effect

No offense to Salesforce, but the rainbow sunset reflections off the curved surface of their tower seem to fit much better with a building named “Transbay Tower”—particularly when it sits on the skyline near the Transamerica Pyramid. The darkened and humble shape of Alcatraz in the foreground makes for an appropriate memento mori to San Francisco’s grand architecture.

Transbay Tower Grating Effect