how can one see that movement separates from its cause?
that this happens can be observed in many phenomena of movement whose cause is located at a place other than that of their appearance. for example, one sees this in waves that result from an object hitting the water. or it can be seen in the waves that arise at one place and then are propagated out from there.
the same, however, can be said about the voice, the cause of which is not located in the ear listening to it. Likewise it cannot be claimed that perceived light emerges from the perceiving eye
- why does something move?
- how can flowing water consume its momentum when it encounters an obstruction?
- why are the waves of descending rivers slower than the water flow of the river itself?
- why does a body move when something strikes it?
- under what conditions can a person on a see-saw not jump up?
- why does waves look like crescents when viewed from the side?
- what happens to the waves when water crashed into an obstacle?
- what effects do the slope of the obstruction and the angle of impact have?
- why doesn't viscous water flow continually throungh a bent pipe?
- does the weight of water vary according to how one changes the slope of a pipe filled with water?
- where does the wave break?
- what causes cyclones?
- can a special dam influence the impact of the water?
- what must an especially strong dam look like?
- how can one simulate the collapse of a wave?
- how does air, once it is immersed, escape the water?
- what machine can be used to ram piles into the ground?