The Swing of a Pendulum

James, you're deluded if you think for one second your theory is representative of reality. You don't know the speed of the object, you don't know if you are faster or slower than another object, you don't know which direction of travel you are traveling, you don't know if when you accelerate you are increasing or decreasing velocity, your pendulum swings and the distance between you and the other vehicle remains the same, etc, etc, etc, etc, etc, etc.....

 

Log in or Sign up to hide all adverts.

Those examples are not the same thing. Those are complex systems that nobody completely understands. With Motor Daddy we are almost at the stage of 2+2=5. It is really less about Einstein being right than Motor Daddy being wrong. Motor Daddy can't be right. His ideas directly contradict reality.

If you notice, Motor Daddy's examples give different results from Einstein's. Grossly different results. Einstein's results have been tested over and over and have never been found to be wrong.

 

Log in or Sign up to hide all adverts.

If there are no absolutes in spacetime then there are no absolutes in knowledge

Please Register or Log in to view the hidden image!

I don't disagree with what you say, above - nor am I able to agree - due to my (not even) limited knowledge.

I searched for the meaning of 'spacetime' for a couple of decades .. what is this spacetime .. why can't I get my mind around it .. why are the worlds best scientists talking about it as though it's a done deal .. ?

Then a couple of years ago, whilst lurking PhysicsForums, I came across a thread 'Spacetime Is A Fairytale' which was initiated by one of their most respected moderators / mentors no less (I posted it here in the science forum some moths ago).

So imagine my bemusement !

I suppose that more than anything, I should defer to Pyrrho of Elis, circa 250BC; "Believe nobody - suspend judgment on everything"

But it's fun in any case.

 

Log in or Sign up to hide all adverts.

My ideas are the very definition of reality! You're measurements are so messed up you can't tell your motion, the other guy's motion, or which is faster or slower, or anything!! What is it that you can tell me about motion then?

 

You talked about doctors, not me ..

 

Touche'. But your examples were of systems that are the interactions of a large number of individuals, each with different goals and beliefs. If I had a bad sore throat or a lump in an body part, those are very different things from healthcare in general. I was just saying that not all opinions are equal. If I want to know what is wrong with my car, I talk to a mechanic. If I want medical advice I talk to a doctor. And if I want information about physics, I talk to a physicist. I have my own area of expertise and people come to me for advice. Sometimes they ask about alternative solutions. I explain why those are not recommended. Sometimes they don't listen to me. But they always listen to me on the second consultation. Can I be wrong? Sure. But on the average I am most always correct.

 

My measurements? I have not made any measurements. And I suspect you haven't either.

 

He's more entertaining than most other trolls. I liked his description of how Einstein, Hawking et al were wrong and he was right. Because he understands math and they don't, of course.

 

It was entertaining at first, but it got old fast. I suppose I can just quit reading his posts. Obviously, that is the only solution here.

[video=youtube;_yJBhzMWJCc]http://www.youtube.com/watch?v=_yJBhzMWJCc[/video]

 

Hi James. My comment was in reply to Aqueous Id several posts back, who categorically said to me;

There are no absolutes in spacetime. Ten minutes of research will show that.

That IS a fascinating perspective! Never heard it like that before. Invariance sounds almost the opposite of relativity.

That's where we kinda part company (metaphorically speaking, of course). How old was the flat earth theory and in how many ways was it confirmed by the observations of the day. And the geocentric universe, etc ?

http://www.physicsforums.com/showthread.php?t=543690

.. and correction, the thread is called 'The Myth Of Spacetime'. 'Spacetime is a Fairytail' is a paper it linked. I posted a link to that paper in a thread of the same name I created here a couple of months ago. There was some interesting comments. I suppose if you want to discuss it further, that thread might be the place.

I used to read a great deal over there. The moderator I referred to is one Marcus. Although I never spoke to him (and rarely posted anywhere there), he commanded enormous respect on my part because of;

- His humility and friendly nature
- His lack of any hubris
- his apparent enormous intellect and knowledge in his field.

 

It all happens at the margins, my dear Cheezle. You only have to find a trace of contamination in one of the hundred or so Cheezles in the pack to call in the FDA.

 

James R, I wanted to say a bit more on this.

Though I had said nothing to the contrary, in post #400 Aqueous Id said (to me)

There are no absolutes in spacetime. Ten minutes of research will show that.

That's fine - all in the discussion, and I replied in #403;

If there are no absolutes in spacetime then there are no absolutes in knowledge

Please Register or Log in to view the hidden image!

Then in #411 you said;

That doesn't follow. But anyway, there are plenty of absolutes in spacetime - just not the ones you think there are ..

Did you see the smiley thing in my above comment to AI ? My comment was meant more tounge in cheek than anything .. no absolutes in spacetime, you are in spacetime .. how can you assume absolute knowledge .. how can nothing absolute contain anything absolute ..

.. tha sort of thing. But now your most recent, above has me most intrigued. Plenty of absolutes in spacetime ? What are some of them ?

Edit; and what absolutes did you think I think there are ?

 

James, Obviously this discussion is not progressing because we've come to the point we always get to in which I can show my method and calculations are correct according to definition and accepted methods of geometry. On the other hand you claim your test results show that I am wrong.

I think we need to change tactics here to get to the bottom of how two entirely different methods could be mathematically correct. My method describes reality MUCH better than yours does, and yet, you claim to have real evidence against that statement.

We need to change the focus to exactly what is being measured and exactly what we mean when we use those terms for units. Are the units really being used according to the concept of the unit? Are some measurements overlapping others to create a false sense of reality?

Let's talk about the actual measurement of the distance and time. The wave length and frequency of light, and what we mean when we say "moving" or "traveling" or "motion."

http://en.wikipedia.org/wiki/Frequency

A quote from the link:

My opening thought is, how do you determine frequency if you don't know the time that has elapsed?

 

Hmm, I wonder how you generate enough brain power maintain your bodily functions.

 

My next thought is "repeating" according to who?

 

Another quote from the link that I find very interesting indeed!

Care to explain how that error is introduced into SR, James??

 

You are such a hoot MD. Let's see it is a problem at low frequencies, hmmm. Would you say that light generally could be considered a low frequency wave?

Please Register or Log in to view the hidden image!

Your whole line of reasoning (such as it is) about frequency and a problem with SR is misguided at best. You really should try to at least a get vague understanding of physics, before trying... oh never mind.:shrug:

 

How would you know the frequency first without knowing the time?