Lasers

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

Spectroscopy Lab

Approaching the summer solstice, the start of fall-semester classes and their attendant labs seems far away, but a new class of St. Lawrence first-year students will be here before I know it.

Spectroscopy Lab I

This was one of the light sources students were interrogating: a sodium lamp, like the ones used in street lights (at least in the twentieth century—LED street lamps are becoming increasingly dominant now.)

Spectroscopy Lab II

Effusion Cell II

This is another photograph from a lab in the Charles Harris Group at UC Berkeley. I previously photographed this effusion cell apparatus from an orthogonal orientation, but I also found this shot at its long axis intriguing. The sense of complexity and purpose, but also the sense of aesthetic minimalism, always attracts me to physics apparatuses.

Effusion Cell II

Mummifying Campbell Hall

Welcome to Decaseconds, a photography blog where Brendan and I display our latest photographs. Though we’ll be posting all kinds of images here, we have a mutual interest in long-exposure and HDR (high dynamic range) landscape photography. That will be our focus.

UC Berkeley’s Campbell Hall is currently undergoing demolition that has resulted in the mummification of the building; the glow from within made a fantastic counterpoint to the light reflected from the overcast sky.

Campbell Hall Construction