#pcz223 The ripples you see here are the results of the superpositions of all of the waves from the different disturbances in the pool. You can see this superposition in action when a ripple reflects off of the wall and collides with, and momentarily adds to another ripple.
#PCZ222 Diodes (like I show in the video) only let current (I) flow one way. They have a variable resistance (R) based on the voltage (V) across them. They have a very high R which lowers I, when V is one sign, but easily let I through if there is enough V of the other sign.
#pcz222 https://t.co/zMCONmt1Nh
We learned that inductors resist changes in current, but I found it interesting how they also resist changes in magnetic fields. We use this to drive motors by generating a spinning magnetic field that the inductor in a motor will spin to follow.
https://t.co/AQkYN08EIV #pcz222 I thought this was a cool video of a thermoelectric generator. It uses the difference of temperatures to create a potential difference and generate current. Generally, heat is used to create this temperature difference, but here he to used ice.
#PCZ222 https://t.co/d4Q3coAkEW While I already kind of got that electric flux was the dot product of the electric field and the area of a Gaussian surface, the basic description in this video combined with the hands on visual aid really got this concept to click for me.
#pcm152 This is Benjamin Thompson, who's one of my favorite historical scientists for a few reasons. He was an early influential figure in thermodynamics and he showed that heat was actually a type of energy.