You see low voltage ones for things like memory backup on hi-fi gear. I have some 3F/5v capacitors in an old Technics tiner.

Wait so this is like one mistake away from turning that stickman into a fried stickman?

That is why I like supercapacitors.

Operation Sundial 2.0, electric boogaloo.

There's nothing in the SI system that says ratios have to be between base units. Units that involve mass are defined against the kilogram not the gram.

That stucks ;-)

It is not that much though. You could easily make an electromagnet with magnetic flux density of multiple tesla in it's core.

The joke wouldn't have worked as well.

A gram is actually a pretty small unit of weight, and the joke relies on the base units. It's actually a weird little abberation in the metric system that the "base" unit is considered the kilo gram. so a 1 gram rock would be a little pebble, strangely small.

We use it to ignite the tokamak.

A rock that weighs one stone (14 lbs).

Or a barleycorn that's one barleycorn long? Or a really large foot that's a foot long. Or a chain that's a chain long?

I bet it's kind of going off of the original SI representation where, like, a foot was the length of the king's foot, and that was what they had to measure against to make sure everything was accurate.

A capacitor of 1 farad at standard American 120 volts has the energy between 7.62×54 and .50 BMG, and will discharge just as violently.

It is my understanding that XKCD's "characters" are somewhere between an actual character and an archetype. It isn't clear...and kind of doesn't matter, if Black Hat is the same guy in every comic or if he's a different devious schemer in each. Randall hasn't bothered to name any of them so the community has given them unofficial nicknames.