Dale's latest activity
-
Note that in a light clock scenario, this pulse reflects off the second mirror and reverses direction. I don't know that accounting for... -
Dale replied to the thread Undergrad Revisiting the Light Clock.Before we start, let's be very clear. The light clock works. The purpose of this thread is not for you to explain why it doesn't work...
-
Dale replied to the thread Undergrad Revisiting the Light Clock.Hi Everyone, this thread is related to @DmitryS previous thread, but after that thread he and I discussed the issue that led to closure...
-
Dale replied to the thread Undergrad Reference frames, center of rotation, etc.Excellent. Now, notice that ##v(x)=v_{rot}(x)+v_{trans}(x)##. So this decomposition into rotational and translational components does...
-
Dale replied to the thread Undergrad Reference frames, center of rotation, etc.Good! For simplicity and convenience, let’s temporarily choose ##t=0##. At ##t=0## we can use the total ##s## to see that ##y=0##. So...
-
Dale replied to the thread Undergrad Reference frames, center of rotation, etc.Excellent, except that you will want those as vectors, not just the magnitudes. So for the rotating $$v_l(t)=(-\omega l \sin(\omega...
-
Dale replied to the thread Undergrad Reference frames, center of rotation, etc.I think that you need to work through the math for yourself. Why don’t you do it for the example you posted. Let’s simplify that the...
-
Dale replied to the thread Undergrad Reference frames, center of rotation, etc.I agree. I think we have explained it every way possible. @gen x just needs to actually sit down and do the math.
-
Dale reacted to weirdoguy's post in the thread Undergrad Reference frames, center of rotation, etc with
Like.
This whole thread rotates around the point that @gen x can't see a mathematical fact about kinematics without using math. I think that... -
Dale reacted to A.T.'s post in the thread Undergrad Reference frames, center of rotation, etc with
Informative.
I don't think you understood my post #57 at all. So again: If you choose a specific translation (like translation = 0 meaning pure... -
Dale replied to the thread Undergrad Reference frames, center of rotation, etc.No, you specified So there is no change to the motion. We are only changing how we decompose the motion into translation and rotation...
-
Dale reacted to Hornbein's post in the thread Undergrad One does not “prove” the basic principles of Quantum Mechanics with
Skeptical.
Many models lead to the same math. So a wrong model can lead to correct mathematics. This happens all the time. -
Dale reacted to A.T.'s post in the thread High School Thought Experiment: Behavior of shadow of object moving at speed c with Like.
Length contraction is not a visual phenomenon. It is what remains, after you accounted for all the visual effects. Your shadow...
-
Dale replied to the thread Undergrad Reference frames, center of rotation, etc.So what? Just because they are internal doesn't mean that they don't exist. The usual way is to redefine your system so that the...
-
Dale replied to the thread Undergrad Reference frames, center of rotation, etc.Inside the ruler there is tension. As it is spinning the material of the ruler is under stress. The motion tries to pull the ruler...