Keep my session open?
Ending In 
The session is expired
Your session has expired. For your security, we have logged you out.
Would you like to log in again?

CENCO® Electron Spin Resonance


Measure the Value of a Single Electron’s Magnetic Moment

Measure the Value of a Single Electron's Magnetic MomentThis experiment in modern physics investigates the intrinsic angular momentum of a particle - the fundamental property discovered by studying discrepancies between Bohr's quantum description of the hydrogen atom and experimental values. Designed by the renowned Physics department at Dartmouth College, this apparatus is an intriguing illustration of Uhlenbeck and Goudsmit's 1925 discovery.The elegant device generates a magnetic filed by a pair of Helmholtz coils powered by an AC current. A probe containing the parametric organic compound, diphrenyl-picri-hydrazyl (DPPH), and a wire coil are inserted into the field. DPPH has an unbound electron that orients in an external magnetic field. The electron spins like a top in the polarizing field with a frequency proportional to the magnitude of the field. If the polarizing magnetic field is swept through a range, the electron's precession varies in frequency with the field change. If students set up a weak high frequency field at right angles to the primary field, the weak field with interact with the electron when their frequencies are the same. When the probe containing DPPH is inserted into the field, a tiny coil, which provides the inductance for the oscillator, surrounds the crystals and supplies the transverse, high-frequency signal. The coil mounts in a sturdy metal probe with an acrylic end cap. Students can see the coil, but it is well protected. The probe is wired to an oscillator, which measures the electrons frequency as the magnetic field varies from positive to negative. The energy transfer values are then displayed on the oscillator's screen. Includes power supply, two Helmholtz coils, probe, electronics, and instructions. Requires an oscilloscope, available separately.


   
 

ORDER

Item # Description Unit Availability Price Quantity
470120-930 Electron Spin Resonance
Each Retrieving

WRITE A REVIEW

Need help?

  • Whatever you have to say, positive or negative, is important to us.
  • Providing feedback takes only seconds.
  • Your feedback will be made available to the public on the web.

SARGENTWELCH.com will publish your name as sargentwelch.com user.
You can use this name, or edit and save a nickname.
We recommend authors use their first and last initial.

Please confirm your profession

Example: Education

Please confirm your role

Example: Teacher

Please confirm your location

Example: New York, NY

REVIEWS (0)

Total Ratings: 0
Avg. Ratings: 0.0 out of 5

Sort all by:

 
Review & Compare Alternatives
We found alternative products that can save you up to  per item-unit.  To compare product details, select up to 3 alternatives below and click Compare Selected. To add items to your basket, enter a quantity and click Add to Basket.

Original Product:

Description Catalog Number Availability Unit Your Price Price Per Qty