During several trips across Texas, I have noted areas of windmills. These are interesting at night. There is an identifying light on the top of each which blinks. All of the windmills blink in coordination – except our last trip where one was a rebel, but I digress. Each windmill has an output of a small town per an electrician I met. Each is blown by the wind independently and produces its electricity independently. Alternating current is 60 cycles per second. A coordinated single wave-form of electricity is required for appliances to work properly. How are the wave forms coordinated between the windmills?
A pie pan is flat and round with the lip being a larger circle than the bottom producing an angle between the measurements of the two areas. How is that angle determined? Did someone say, “our pie crust needs a 50 degree angle from the bottom to the back crust?”