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06:26 IWF (Göttingen) German 2004

Wasserwellenexperimente

Some of the fundamental properties of waves are demonstrated using surface waves in a water trough.
  • Published: 2004
  • Publisher: IWF (Göttingen)
  • Language: German
01:28 IWF (Göttingen) German 2004

Modell einer fortschreitenden Welle

The connection between circular motion, phase difference and wave propagation is shown with the help of a series of beads arranged to form a right-handed helix.
  • Published: 2004
  • Publisher: IWF (Göttingen)
  • Language: German
00:50 IWF (Göttingen) German 2003

Longitudinale Schwingung einer Spiralfeder

Longitudinal standing waves can be excited on helical springs. Through optical projection, nodes and antinodes are made visible. A horizontally mounted small helical spring is projected onto the wall of the lecture hall. A standing longitudinal wave is excited by driving one of its ends with a door bell vibrating at one of the normal mode frequencies of the spring. In the projection, the nodes and antinodes of the longitudinal vibration are easily seen: In the nodes, the sections of the spring are motionless and thus clearly imaged, while in the antinodes they appear fuzzy.
  • Published: 2003
  • Publisher: IWF (Göttingen)
  • Language: German
01:20 IWF (Göttingen) German 2004

Schwingungen einer Stimmgabel

The sinusoidal vibrations of a tuning fork are made visible by means of a reflected light beam. The tuning fork is excited by compressed air, and can be rotated around its vertical axis. One of its legs carries a small mirror off which a laser beam is reflected onto the wall. By uniformly rotating the tuning fork, the time dependence of its vibration can be demonstrated.
  • Published: 2004
  • Publisher: IWF (Göttingen)
  • Language: German
01:53 IWF (Göttingen) German 2004

Transversale Eigenschwingungen eines Gummibandes

A rubber band clamped at its two ends can be excited to a large number of normal modes of transverse vibrations. These modes can also be described as superposition of two equal waves travelling in opposite directions, forming standing waves.
  • Published: 2004
  • Publisher: IWF (Göttingen)
  • Language: German
01:56 IWF (Göttingen) German 2004

Wackelschwingungen

The sinusoidal vibrations of a tuning fork are made visible by means of a reflected light beam. The tuning fork is excited by compressed air, and can be rotated around its vertical axis. One of its legs carries a small mirror off which a laser beam is reflected onto the wall. By uniformly rotating the tuning fork, the time dependence of its vibration can be demonstrated.
  • Published: 2004
  • Publisher: IWF (Göttingen)
  • Language: German
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