Videos of classroom physics demonstrations F. Frising, P. Thiry and R. Sporken Department of Physics University of Namur (FUNDP) Rue de Bruxelles 61 B-5000 Namur Belgium

The « Foucault pendulum »  Click to play the video.

The « Foucault pendulum » 

The real Foucault pendulum Precession rate in Belgium = 1 degree in 5 minutes T = 24 h / sin  , the latitude

Trajectories in rotating frames x , (T = 1s) Click to play the video.

Trajectories in rotating frames x , (T = 1s)

The map of the world

The gyroscope Click to play the video.

The gyroscope  = 14.4 s -1 I = kg m 2 L = kg m 2 s -1 r = m m = kg T p = 2  L/(mgr) = 22 s T p exp = 26 s

The Maxwell wheel , L,  = r x T x , L x  = r x T The ring is falling down. The ring is climbing up. Click to play the video.

The Maxwell wheel : time measurement R = m r = m h = 0.76 m For a ring : t exp = 7.7 s Click to play the video.

The Maxwell wheel : the ring and the disk Click to play the video.