This time we use the principle of minimum power to determine what a circuit made of resistors actually does. Its ‘behavior’ is described by a functor sending circuits to linear relations between the potentials and currents at the input and output terminals. We call this the ‘black box’ functor, since it takes a circuit:
and puts a metaphorical ‘black box’ around it:
hiding the circuit’s internal details and letting us see only how it acts as viewed ‘from outside’.
For more, see the lecture notes here:
The camera position is not good in this video compared to the other two, making the cameramen change the direction and the zoom a lot, which makes me dizzy. the other videos were much better in that sense.
other than that, I really like the seminar, and i will keep watching it. thank you for filming it.
Thanks for the feedback!
I’ll tell the cameraman. I’m not sure the position of the camera was worse; I think it was similar to the first video. In the second video the camera was more centered, but further away, and I thought my voice was hard to hear. So, in the third video I tried to put the camera in the same position as for the first video. Maybe the cameraman was just getting too excited about panning and zooming.
Can you wear a mike? I have one of my classes recorded, and I have been wearing a mike 3 days a week.
I don’t know how to hook the mike up to the videocam. I could try to figure it out…