Boxes Upon Boxes

The Original.

In great big boxes full of boxes, the toys begin to arrive. We stash them in corners, in front of other shelves, any place mostly out of the way before separating, sorting, packing, and distributing.

Three hundred yo-yos, Imperials and Butterflies, in an assortment of colors. Every box is full of surprises!

Nichrome

Nichrome wire twist
Tied up in a bow?

Hundreds of 50cm lengths of #30 AWG nichrome wire, all twisted up and ready to go? Must be toy kit time!

Nichrome – so named for its mostly-nickel-some-chrome alloy composition* – has a fairly high electrical resistance, high melting point, and the added bonus of its tendency to develop a chromium oxide finish which prevents wee bits from sputtering away when it gets blackbody-in-the-visible-spectrum hot. Hence why it’s used inside toasters as a resistive heating element.

* Depends on the specific alloy, technically. Can be as low as 35% nickel, but an 80-20 alloy is common.

Poppers

Silicone poppers
Pastel rainbow.

Summer is progressing quickly, and it won’t be long before it’s toy kit time once more, including this multicolored assortment of silicone poppers! Available in different colors and sizes, over time you learn which ones pop the best.

Marbled performs better than solid colors.

Pink is often the best. A good one can nearly slap the ceiling from bench height.

No certainty as to why. But they sure are fun!

Neodymium magnets

Cube of cylinders: squaring the circle?

‘Tis that most joyous of days in the beginning of the semester: physics toy kit day! A bag full of odds and ends, perfect for playing, experimenting, and providing tactile bits to use when working through physics problems. Batteries, compasses, various wires, polarizing filters, nails, magnets, and balloons. Always balloons.

Each kit contains two small neodymium magnets, because magnets are amazing. First, you’re bound to stick them together, then spin one around and feel them repel. Surprisingly strong such wee little cylinders. Then check what they stick to around you: whether or not they feel attracted to stainless steel is always intriguing. (The answer is: depends on the type of steel and how it was formed.) Stick them together across a string and let it hang: you’ve built a compass!

Pay attention to the time and location of the sun – or Polaris if you’re pulling an all-nighter – and you can tell which pole of your magnets is which. Maybe it’ll come in handy?

Toy kits

Toy kit components.
Teaching aids.

‘Tis the season for PHYS 211 toy kits!

A bag full of goodies for each and every student studying classical and modern physics this upcoming semester. Yo-yo, fidget spinner, bouncy balls (large and small), rubber ball on string, silicone fun poppers (large and small), metal coil spring (not a Slinky, but really it’s a Slinky), and a pair of balloons. Drinking birds and blowguns (not pictured) to be distributed later in the semester.

For those wondering: the big bouncy ball is way better than the little one. Same goes for the fun poppers. The little ones hop a bit, while the big ones bounce all over the shop. You know, for science.

Duncan Imperial

Red yo-yo
Not pictured: 350 more.

What’s your favorite holiday? Whichever you choose, it’s kind of like that around here, because it’s almost toy kit time! Classical and Modern Physics I – better known ’round here as PHYS 211, or just plain old 211 – gives out a bag full of toys to each and every student. More than three hundred of these are getting ready for distribution.

We do the same for PHYS 212 in the spring, with all sorts of goodies for electricity and magnetism, but in the fall, it’s all about mechanics. Stuff that moves. Toys, exactly like you’d expect them to be. Yo-yos, Slinkys, bouncy balls, blowdart guns, drinking birds, and more.

Always balloons. Every toy kit, every semester, we include balloons. For science. More specifically to help illustrate the principles of physics for homework and problem-solving sessions. What better way to learn than with hands-on experimentation?

Here we have that childhood classic, the Duncan Imperial. Some of the kits will get the Butterfly instead – when you go purchasing hundreds at a time, you take what’s available and fits in the budget – but either way, it’s the return to a certain moment of childhood. At least for the shop techs. If there’s anyone in this world who’s guaranteed to get excited about nifty gizmos, it’s us.

(If there’s anyone in this world who can have serious conversations about the varying quality and potential factors affecting a bouncy ball’s bounce, it’s us. But that’s a topic for another time.)

And, since you were bound to ask: no, neither of us can remember how to do any of our childhood yo-yo tricks. Doesn’t stop us from trying.

Trig-O-Matic

Wire stripper, closed
Grasp.

With enough drawers, boxes, bins, and dark corners in our shop and storage rooms, you’re bound to run across the occasional tool that you wish you’d known about sooner. Maybe it’s useful. Maybe it’s fiercely specific. Maybe it’s just a special sort of ingenious. Maybe it’s a pair of squeeze-and-strip wire strippers.

We have several pairs, but only this one is dubbed the Speedex TRIG-O-MATIC. Nothing like a glorious Space Age name to capture that little extra bit of attention.

Wire stripper, first stage
Squeeze.

Feed an insulated wire through the clamps – or several, once you’ve had a bit of practice – up to the adjustable guide. As you start to squeeze the handles, the left-side clamps gently grasp the wires, holding them steady. Then the notched blades close, cutting through the insulation surrounding the wire. The last step in this little dance splits the tool down the center, pulling wire and insulation in opposite directions, effortlessly.

Wire stripper, second stage
Split.

Cleanly stripped wire, courtesy of the two ugliest birds you’ve ever seen. (What two-headed oddity do you see in that picture?)

At this point, you may be wondering when a relatively complicated gizmo like this would be worth having. After all, it has a lot of moving parts, and the more parts something has, the more parts it has that can break. A pair of basic wire strippers, or even just a pair of pliers with wire snips can do the job quickly and cleanly. Right? Well, there are two situations when this little tool is just the bestest thing ever.

1) When a novice needs to strip a few wires and doesn’t need to spend the time (and mistakes) to learn good, practiced technique. We were all there once.

2) When it’s time to put together toy kits for PHYS 212, and all of those lengths of wire* – each with two ends! – need to be stripped and tied. After a while, you get very good at clipping several at once, until it becomes a game to see how many you can manage. Yes, there’s a ceiling.

Toy kits! A subject for a future post: each semester, we put together hundreds of packs for the PHYS 211 and 212 students, full of odds and ends to use for problem sessions. They’re wondrous assortments of odds and ends (and honest-to-goodness toys!) that illustrate the principles of physics through just being neat-o.

* Cutting hundreds of pieces of wire to a specific length is its own problem, and there’s a shop-made solution for that. If you have to do a job a dozen (or a couple hundred) times over, build a jig!