noun, Physics, Optics.
See under .
noun, Physics, Optics.
the dividing of a spectral line or lines as a result of placing a radiation source in a magnetic field. The division consists of three equally spaced lines (normal Zeeman effect) in systems for which the spin quantum number is zero, or of three or more unequally spaced lines (anomalous Zeeman effect) in systems for which the spin quantum number is not zero.
the splitting of a spectral line of a substance into several closely spaced lines when the substance is placed in a magnetic field
The splitting of single spectral lines of an emission or absorption spectrum of a substance into three or more components when the substance is placed in a magnetic field. The effect occurs when several electron orbitals in the same shell, which normally have the same energy level, have different energies due to their different orientations in the magnetic field. A normal Zeeman effect is observed when a spectral line of an atom splits into three lines under a magnetic field. An anomalous Zeeman effect is observed if the spectral line splits into more than three lines. Astronomers can use the Zeeman effect to measure magnetic fields of stars. Compare Stark effect.
[nawr-muh n] /ˈnɔr mən/ noun 1. a member of that branch of the Northmen or Scandinavians who in the 10th century conquered Normandy. 2. Also called Norman French. one of the mixed Scandinavian and French people who inhabited Normandy and conquered England in 1066. 3. a native or inhabitant of Normandy. 4. (def 1). 5. […]
- Norman arch
noun 1. (mainly Brit) a semicircular arch, esp one in the Romanesque style of architecture developed by the Normans in England Also called Roman arch
noun 1. the conquest of England by the Normans, under William the Conqueror, in 1066. noun 1. the invasion and settlement of England by the Normans, following the Battle of Hastings (1066) The overthrow of the government of England in 1066 by forces of Normandy, a province of northern France, under the leadership of William […]
[nawr-muh n-dee] /ˈnɔr mən di/ noun 1. a region in N France along the English Channel: invaded and settled by Scandinavians in the 10th century, becoming a duchy in a.d. 911; later a province, the capital of which was Rouen; Allied invasion in World War II began here June 6, 1944. /ˈnɔːməndɪ/ noun 1. a […]