Greg Lowe
Faculty Sponsor: Dr. John YukichJohnson
Noise is an intrinsic noise, or voltage, caused by the physical make up of components in an apparatus. In this experiment I will study Johnson noise of various resistors. Johnson noise can be explained by Nyquist’s theorem, derived from thermodynamics, which states that current or voltage fluctuations from a pure resistor in thermodynamic equilibrium depend only on the resistance of the device and temperature. I will be using Teach Spin’s Noise Fundamentals apparatus to study Johnson noise of resistors at differing temperatures and test these values against theoretical values obtained using Nyquist’s theorem.
Johnson Noise is an intrinsic noise, or voltage, caused by the physical make up of components in an apparatus. In this experiment I will study Johnson noise of various resistors. Johnson noise can be explained by Nyquist’s theorem, derived from thermodynamics, which states that current or voltage fluctuations from a pure resistor in thermodynamic equilibrium depend only on the resistance of the device and temperature. I will be using Teach Spin’s Noise Fundamentals apparatus to study Johnson noise of resistors at differing temperatures and test these values against theoretical values obtained using Nyquist’s theorem.