I always am amazed to see the clear transverse motion, which also has a longitudinal part. im this case the variable length. although very small it is there. What amazed me even more is that this longitudinal wave is recognized in sound waves and other natural phenomena. except for the longitudinal electrical waves. which appear to be completely ignored. why is that? isn't that amazing? since a wave is stationary and thus can't move without the longitudinal component!
Nice videos. Very cool pendulum. But how come the automated frequency generator does not change anything the pendulum change of plane. I mean, the Earth must play the whole role here. How come this automation does not interfere with the Earth's movement ? Maybe you could draw this on a blackboard as a future video ? I came to know you Prof. Hafner at your EDX course.....as a refresher acting just like this automation so the dumping of our memory does not change all I know about Physics....which I deeply love....
