The P&A Shop

A typically messy electronics bench
The electronics bench

Welcome to Olin Science 181, the Physics & Astronomy department’s machine shop. As the department’s support team, we regularly discover, design, and build all sorts of curiosities. This blog is just a small sample of the fascinating things we come across every day.

They’re interesting. Sometimes strange. Sometimes oddly charming.

Always worth sharing.

Perforations

Perforation in library book page reads "Bucknell University Library"
Better or worse than a rubber stamp?

Old texts from the library sometimes still have these perforated markings, ensuring that no one forgets that this particular copy of Morse’s Vibration and Sound, from the International Series in Pure and Applied Physics, isn’t the same one that Grandma’s reading for her book club. They’re kind of charming in their own way, a means of labeling texts that disappeared at some point.

Presumably the librarians could enlighten us on that point, were we to ask nicely.

In the meantime, we’ll just muse over the idea that for a time, some individual had to take every new acquisition and punch a few of these before the first shelving. Some dedicated machine sat on a desk just for this purpose. And when it was a big day, those little punched-out chads probably got everywhere. The spilled glitter of their day.

Leonids

Meteor counting log, Leonids shower, from November 1934
Up to three per minute!

Ninety years ago, during the Leonids meteor shower, someone was counting a lot of burning bits of debris from comet 55P/Tempel-Tuttle. With one fifteen-minute window boasting forty-five meteors (!), that’s a powerfully active shower. Not quite a storm, but those happen with the Leonids sometimes.

According to NASA, the Leonids peak about every 33 years, with 1966 being a spectacular meteor storm. In one fifteen-minute window, thousands of meteors fell like glowing rain. How amazing is that?

Also: check out the times indicated. We’re assuming the counting started at 11:00pm and ran until early morning, with a 24-hour clock opposite how we’d expect it. (Maybe sleep deprivation?) Either that or it was a truly spectacular meteor shower!

Battery Access

Temperature probe, open case, with circuit board, batteries, and screwdriver.
Always entertaining: the original, off-brand battery.

When the screw heads to the battery access panel are stripped, just go all the way and open up the entire housing. Why not?

The real question is this: why are those screws stripped? Did it arrive that way, battery installed, or did they take a real beating after popping the first battery in? Why have screws to keep it shut in the first place?

REMEMBER

Box marked with "Remember: our customer is the NEXT inspector"
And they have strong opinions.

Please pay attention to detail and try to do a good job. Don’t foist broken crap on someone who deserves better. We’re all in this together, and only through diligence and good-faith effort can we all succeed. Some things are important, yet delicate, and carelessness will come back to all of our detriment. Actions, no matter how small, bear significance and have impact on a much greater portion of the world than just we as individuals.

Sage advice, lab glassware packaging.

VHS

Video Home System

Look, sometimes the very specific version you want only exists in a format that’s hard to make use of, like a VHS cassette. That’s why we have helpful, talented people with specific sorts of tech savvy to help us out with bringing oldies but goodies into a more modern format that’s still destined to veer into obsolescence after a while. Thanks, Wes!

For those wondering, AAPT stands for the American Association of Physics Teachers.

In this case, anyway. But for a thought experiment, imagine the collapse of Galloping Gertie as narrated by these other AAPT organizations and/or acronym users:

  • Association of Asphalt Paving Technologists
  • American Association of Psychiatric Technicians
  • American Association of Philosophy Teachers
  • American Academy of Physical Therapy
  • American Academy of Personal Training
  • American Association of Pharmacy Technicians
  • Android Asset Packaging Tool (AAPT2 build tool)
  • International Institute for Animal Assisted Play Therapy
  • AAPT Limited (Australian telecommunications company)
  • ACTTION-APS Pain Taxonomy from the American Pain Society
  • Association of Anatomical Pathology Technology
  • All American Pet Company, Inc. (stock ticker symbol)
  • Alabama Association for Play Therapy
  • Advanced Algebra & Functions Placement Test

Some of those could be really entertaining. Just don’t mention poor Tubby the cocker spaniel to the animal assisted play folks.