This self-contained apparatus demonstrates the existence of quantized states.
- No Heating Required
- Unit Can Be Used Alone or with Oscilloscope Display
- Provided Power Cord: 1.8 m
- Ten-Turn Potentiometer
- For Demonstrating the Existence of Quantized States
Teachers can perform the experiment in one lab period because the use of argon as a filling gas for the Franck-Hertz tube eliminates the need to wait for the tube to reach a high temperature. The compact design, with all voltage supplies built in and all measurements available on two panel meters, gets rid of the time-consuming setup of tube connections. The experiment is easy to conduct and students can record data manually or automatically. When plotting the Franck-Hertz curve manually, a 10-turn potentiometer finely adjusts the anode potential between 0V and 100V, which is displayed on one panel meter while the anode current is monitored on a second panel meter.
Seven clear minima and maxima can be plotted. An automatic scan setting allows the Franck-Hertz curve to be displayed on an oscilloscope operating in X-Y mode or captured by a computer interface system. The apparatus is housed in a rugged metal case that can withstand many years of lab use. One 1.8 m long power cord is included.