Hi
So the particles in the constriction are hitting the pipe wall with less force, that has been established. But is the reduction in force due to:
1) The particles hitting the wall less often, due to their increased velocity, or
2) The particles hitting the wall with less force because...
Hi
What is the fundamental reason why a fluid with laminar flow going through a constriction in a pipe has lower pressure?
Pressure is defined as force per unit area so the fluid particles must be hitting the pipe wall in the constriction with less force.
Beetroot
Hi Jesse
You cannot use time dilation and length contraction to explain the constancy of the speed of light in this example. The rule and watch are always at rest relative to me and I am the one observing them in both examples. Therfore, they will always look and act the same to me.
This...
Hi
I'm having trouble understanding why the speed of light must be constant.
Consider a torch resting on a bench with light shining outwards. Some distance away I have a watch and a metre rule and wish to measure the speed of light.
First I stand perfectly still and someone turns on...