Apr. 12th, 2013

dxmachina: (teaching 01)
I like start each lecture with a quote or cartoon or something similar on topic to what's going to be covered. (I used the cartoon in the icon in my first lecture.) Sometimes they're funny, sometimes they're pithy, and occasionally they are filks, like this one I did last night on the ideal gas law (PV=nRT):

One law for Boyle, with extent versus spring,
One more for Amontons, T zero was the thing,
Another one for Charles, expanding in the heat,
And one for Avogadro, with particles discrete,
In the Realm of Gases where the volumes change.

One Law to rule them all, One Law to find them,
One Law to join them all and through a constant bind them,
In the Realm of Gases where the volumes change.


I just wish there was some property of gases that would allow me to make the last line a little more sinister, but ideal gases don't really have shadows.

But wait, there's more... )
---
One quote that I used that I found unintentionally hilarious was this one from Robert Boyle on his experiments determining that the volume (extent) of a gas was inversely proportional to its pressure (spring):

'Tis evident, that as common Air when reduc'd to half Its wonted extent, obtained near about twice as forcible a Spring as it had before; so this thus- comprest Air being further thrust into half this narrow room, obtained thereby a Spring about as strong again as that It last had, and consequently four times as strong as that of the common Air. And there is no cause to doubt, that If we had been here furnisht with a greater quantity of Quicksilver and a very long Tube, we might by a further compression of the included Air have made It counter-balance 'the pressure' of a far taller and heavier Cylinder of Mercury.

Even in 1662, scientists were complaining about not having enough funding.


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