Objectives of the Experiment
● Observing transverse Zeeman Effect phenomenon.
● Calculating the value of e/m.
● Observing longitudinal Zeeman Effect phenomenon.

How it works
The apparatus can be used to study normal Zeeman shift of the spectral lines of mercury at λ=546.1nm.The experiment starts with calibration of electromagnet. Thereafter, optical system is aligned to observe the circular fringes on the computer monitor due to the interference of green light from mercury lamp at the Fabry-Perot interferometer. As the magnetic field increases, the line splitting can be observed in real time on the monitor.When observe the splitting of K-2 circular fringe clearly, Images are saved in the computer for analysis and calculation. The e/m ratio can also be determined from the experiment.

Also, when the electromagnet is rotated 90 degrees, the direction of magnetic field parallels optical axis, the longitudinal Zeeman Effect will be observed too.

Features
● Mercury lamp as a light source, cheap and no special maintenance.
● USB connection with PC to provide efficient and convenient signal acquisition.
● The interference filter, the Fabry-Perot interferometer, the collimating lens and the polarizing filter are on easily adjustable post to ensure same height.
● The high resolution CMOS camera and Fabry-Perot interfometer to ensure clear and high contrasting rings image.
● An intelligent analyzing software is included to show and analyze the spectral splitting lines easily.

Typical Result

When the intensity of magnetic field is zero, the energy level doesn't split.	When the intensity of magnetic is strong enough, the energy level is splitting. We can see nine spectral lines	Transverse Zeeman Effect	Longitudinal Zeeman Effect

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