Radio knobs

Drawer full of knobs
Drawer label says “Radio Knobs,” and that’s actually what’s inside.

There’s a tendency in the shop to scrounge and save almost everything. You never know when something might come in handy, and experience has shown, over and over, that there’s value in all but the junkiest junk. And even that, if sufficiently large/heavy/whatever, can be an effective doorstop, or spray paint shield, or otherwise helpful bit of plain old physical mass. When a piece of equipment breaks and is just irreparable, you dig out the good bits and set ’em aside.

It’s important to keep track of which boxes contain the useful bits and which the junk. Sometimes the difference isn’t immediately obvious.

There’s a drawer in one of our storage rooms labeled “Radio Knobs.” Indeed, that’s what’s inside. Collected by our predecessors from an array of broken equipment, calmly waiting their turn to be useful once more.

And, yes, they have been useful.

Plans

Architectural plans
Stamps, signatures, and everything!

Tucked away in a back corner – we have so many of those – sits a set of the architectural plans for the Tressler Observing Laboratory from 2014. What had once been an exterior deck is now, thanks to a very generous gift, a fully enclosed structure housing six telescopes. On a good night for observing, or astrophotography, or simply appreciating the wonders of the cosmos, the building’s roof slides away, revealing the night sky. It’s a neat trick.

The plans are a (recent) historical artifact, a little water-damaged, but still fully readable. Nothing much in here you can’t just walk over and see in person, of course. For those with an architectural inclination, though, skimming through detail drawings is an always-interesting pursuit.

Fulgurites

Box of petrified Jersey lightning
“Petrified Jersey Lightning”

We have multiple storage rooms, each with shelves, cabinets, drawers, and seemingly endless places to tuck away small objects. It’s easy, so easy, to simply forget something. Then, years later, someone else gets the joy of stumbling across it.

Sometimes it’s a century or more.

Petrified Jersey Lightning

or

Fulgurites from South Jersey collected by John G. [unknown]

Presented to Physics Dept 1/14/10

Fulgurites!
Neat!

That would be January 14th, 1910.

Fulgurites are a mineraloid formed when lightning strikes the earth and fuses mineral grains. They come in as many varieties as there are different types of soil, and as we’re in Physics, not Geology, our understanding of the particulars is as reliant on Wikipedia as yours.

We can only guess as to why John gifted Physics with these 112 years ago, but we appreciate it. Everyone should have the chance to stumble across a little petrified Jersey lightning from time to time.