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title:: Books/Code - Random Highlights collapsed:: true - We normally like to think of a battery as providing electricity to a circuit. But we’ve seen that we can also think of a circuit as providing a way for a battery’s chemical reactions to take place - Morse code reduces written language to dots and dashes, the spoken version of the code reduces speech to just two vowel sounds. ==The key word here is two. Two types of blinks, two vowel sounds, two different anything, really, can with suitable combinations convey all types of information.== collapsed:: true - Block Reference - Voltage refers to a potential for doing work. Current is similar to the amount of water flowing through a pipe. Voltage is similar to the water pressure. The voltage, E, is 1.5. That’s a potential for doing work. But because the positive and negative terminals are connected solely by air, the resistance (the symbol R) is very, very, very high, which means the current (I) equals 1.5 volts divided by a large number. This means that the current is just about zero. The V stands for voltage, but it could also stand for vacuum. Think of the V as an electron vacuum and think of the ground as an ocean of electrons. The electron vacuum pulls the electrons from the earth through the circuit, doing work along the way (such as lighting a lightbulb). - Money is energy money is voltage, eh? Entrepreneurship is then finding potential and then completing the circuit by reducing resistance. Nice. #BOOM - The relay is a remarkable device. It’s a switch, surely, but a switch that’s turned on and off not by human hands but by a current. - It was Boole’s genius to make algebra more abstract by divorcing it from concepts of number. title:: Bools/Code -