- #36
paulo84
- 112
- 7
lekh2003 said:A string transports a wave. It can act as a medium.
Thank you, I'm already more clear.
lekh2003 said:A string transports a wave. It can act as a medium.
What is a beta wave?paulo84 said:is there a part in physics which deals with strings carrying beta waves?
Dale said:I would start here:
https://en.m.wikipedia.org/wiki/String_(physics)
https://en.m.wikipedia.org/wiki/Wave
Dale said:What is a beta wave?
Yes, @sophiecentaur usually is right!paulo84 said:I'm starting to think Sophie is right.
Dale said:Yes, @sophiecentaur usually is right!
It has already been discussed, but IMO bears repeating. Time is NOT change of displacement. If s represents the displacement of some object, then a change in displacement is usually represented as ##\Delta s##. Velocity is the instantaneous rate of change of displacement, and can be written either as s' or s'(t) or ##\frac {ds}{dt}##. This last notation is the derivative of s with respect to t. "Change of change of <whatever>" is not good terminology. We always talk about the "rate of change" of some variable with respect to some other variable. In this context, the "other variable" is time.paulo84 said:OK, so time is change of displacement. Speed is change of change of displacement.
No, accleleration the rate of change of the velocity with respect to time. Again, if s is displacement, then s'(t) is velocity, and s''(t) or ##\frac {d^2s}{dt^2}##, also a vector quantity, as direction is significant.paulo84 said:Acceleration is change of change of change of displacement (or of distance, sorry I'm not sure whether acceleration is a vector or a scalar).
No. Dimension has nothing to do with any of this.paulo84 said:It seems to me, with each new layer of change you're adding a new dimension.
Yes.paulo84 said:Therefore there must be an infinite number of dimensions of space. Or am I getting space mixed up with motion?
Duration is what clocks measure, distance is what rulers measure. Clocks and rulers are different. If you are getting so far out in the weeds that the distinction escapes you, it's time to come back to the house.paulo84 said:I'm sorry. I just don't understand the difference between time and space. As far as I can fathom, they're the same thing.
jbriggs444 said:Duration is what clocks measure, distance is what rulers measure. Clocks and rulers are different. If you are getting so far out in the weeds that the distinction escapes you, it's time to come back to the house.
This is logically inconsistent. If they were the same thing then you could not distinguish between them.paulo84 said:I am able to distinguish between space and time for the practical purposes of everyday living. I stand by my point.