Data from photocell experiment, done in Galbraith Building, GB120, 2016jan20

f(q)          f(2q)
5.70k ohms     3.45k ohms
3.45k ohms     1.22k ohms
1.22k ohms     750 ohms
750 ohms       395 ohms
395 ohms       258 ohms
258 ohms       198 ohms
198 ohms       145 ohms
145 ohms       126 ohms