For my physics lab I have to come up with a way to measure Boltzmann constant using thermal noise.
Than I'm going to attach an arduino UNO board to the output and measure the \$\Delta V\$, using a sampling rate of \$50\$KHz, and by computing the st.deviation, get a value for \$k_b\$.
I've some question about this setup:
- Is the LF 355 a good op-amp candidate for my experiment? Considering that the thermal noise input will be very weak and thus very close to the GND value is it better to use a RRIO op-amp?
- Is the sampling rate of Arduino enough to see a consistent variation of the \$\Delta V\$? Does the fact that the board can measure only positive difference of potential will alter the calculation of the st.deviation?