I have no background in electrical engineering so please bear with me.
I want to create a random number generator/displayer using a resistor. My idea is to wire a resistor to an amplifier of some sort and display the signal on an oscilloscope. The idea I have is based on these:
Closeup of amplifier setup:
Closeup of resistor setup:
First of all, I am wondering if I over simplified the setup. As stated above, I believe I can simply flow power through the resistor, amplify, and use. Also, the setup of the amplifier confuses me. I've tried Amazon searches for "amplifiers," "signal amplifiers," and "op amp," a term I've heard on vaguely similar questions, but none of them return something similar to the gold box. Furthermore, what are the use and names the three wires and the gray machine connected to the amplifier? In addition, what is the device the resistor is sandwiched between? I assume its the power source but that looks a bit odd. If it is, what is it called or are there any simpler methods to power the variable resistor? Lastly, is the connecting the amplifier to the oscilloscope a coaxial cable?