Search found 7148 matches

by ucim
Thu Oct 18, 2012 1:48 am UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Wait, why do I see the light reaching the train ends at different times? The short answer is that, from the point of view of the station, the back of the train is moving towards the photons, so the photons have less of a distance to travel. The front of the train is moving away, yielding a longer d...
by ucim
Wed Oct 17, 2012 7:58 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

1: Who is right? From their one set of input, neither can tell, so one can not be preferred other the other. I don't know what you mean by "one set of input". Both of the map/list makers (Fulano and John) roam all over Pennsylvania making latitude and longitude measurements according to t...
by ucim
Wed Oct 17, 2012 4:12 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Relativity says there is no such frame. I am suggesting that ANY stationary frame, with 4 sensors ( not all in the same plane ) will manifest this one outgoing signal sequence. True, but uninteresting. Without motion, there are no relativistic effects. Maybe the issue is one of definition. The term...
by ucim
Tue Oct 16, 2012 7:32 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

1 Incoming signals sequence is not necessarily [ or ever ] received/recorded in the same temporal order as the historical outgoing signals sequence. 2 No single sensor nor set of sensors can mathematically detect the historical signal sequence. 3 The historical signals sequence can be established i...
by ucim
Tue Oct 16, 2012 1:38 am UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Those events appear as a shell in threespace but are a cone in fourspace, and that cone is lightlike. [quibble] Events are points (in fourspace). The light cone defined by the event is a cone in fourspace. Slices of that cone (at a given moment in time, in any given reference frame) appear as a she...
by ucim
Mon Oct 15, 2012 10:35 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

NO, NO. A recorded occurrence sphere is NOT an emission occurrence. Only the emission is the unique occurrence. However, the actual receipt of the occurrence sphere at a place in space at a moment in time is itself a "thing that happens", ergo an occurrence. It's just a different one. Sin...
by ucim
Mon Oct 15, 2012 8:59 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Meant this as a joke - I wouldn't recommend getting hit by a bullet as a way to observe a gunshot. LOL. But... for science! So, if you want to restrict the usage of the word "observe" to one sense, we'll need another word for when we want to express the idea embodied by the other sense. J...
by ucim
Mon Oct 15, 2012 8:22 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

You may speak of an observation being separated from the event which was observed, but this separation is, by definition, lightlike. If we define "observation" as an event which is caused by another event, this would not necessarily be so. The causal mechanism could take longer to reach t...
by ucim
Mon Oct 15, 2012 7:04 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

You may speak of an observation being separated from the event which was observed, but this separation is, by definition, lightlike. If we define "observation" as an event which is caused by another event, this would not necessarily be so. The causal mechanism could take longer to reach t...
by ucim
Mon Oct 15, 2012 6:28 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

I challenge that all observers separated from a given set of events by timelike intervals record the same historical sequence. Then it would be correct. All observers separated from a given set of events by timelike intervals record the same historical sequence. They may, however, record a differen...
by ucim
Mon Oct 15, 2012 6:07 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Why do we need all these relativity based terms??? occurrence sphere inside of it or outside of it ...why is this one term not completely sufficient to describe all conditions required for logical discussion please? The way I understand that you are using the phrase " occurrence sphere ",...
by ucim
Mon Oct 15, 2012 3:48 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

AGREED! The applet works perfectly! The applet works perfectly when v = 0. The applet works perfectly to show what relativity does when v = 0.5, too! The representative maths of each approach could not be more perfect. The applet thus illustrates the following points: ⋅ All observers that...
by ucim
Sun Oct 14, 2012 3:59 am UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Given the understanding of relativity that I have gained in the last couple of weeks and dozen pages or so, I am finding it not difficult at all to realize that BOTH would happen if the person and the ruler were traveling by me at some very large speed. The person would be shorter, and the ruler wo...
by ucim
Sun Oct 14, 2012 3:42 am UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

[...] What is the actual height of a six foot tall person who is standing up and fifteen feet away? 6 feet, let's say they are holding a ruler vertically wrt their feet. Yes. Agreed. What is his actual height if he's leaning on a lamppost? The ruler is 6 feet high Yes, but since the ruler is vertic...
by ucim
Sat Oct 13, 2012 3:29 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

I want to determine the actual height of three people, from three observers. Once we know their actual height, then we also know how tall each will appear to be to the observer at any, and all other (x,y,z) locations. What is the actual height of a six foot tall person who is standing up and fiftee...
by ucim
Sat Oct 13, 2012 1:44 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

I still have two questions please about just to comprehend these three terms 1 separation distance between two occurrences, determines if the two _______ are timelike, or lightlike, or spacelike a occurrences b events c observers d observations e locations f receipt times g event horizons h clock m...
by ucim
Sat Oct 13, 2012 4:55 am UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

1 Are you saying that with timelike occurrences ( separated by <ct ), that all observers agree with the identical historical occurrence sequence? 2 Are you saying that with spacelike occurrences ( separated by >ct ), observers cannot necessarily agree with the timelike historical sequence? ( as per...
by ucim
Wed Oct 10, 2012 9:28 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Using your term, and trying to understand, and hence being able to agree with it, potentially. Please explain lightike in reference to the earth, what exact parts of the universe share a lightlike connection to Earth now and to those of 1776? To answer this question, we need to include time in the ...
by ucim
Wed Oct 10, 2012 6:38 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Do we all agree that the novas that occurred a billion years, ( during 1000 years) happen before those novas that occurred a million years ago, (during 1000 years ) and before any novas that occurred in the last 1000 years? That is, the sets of novas happened in that sequence, regardless of when or...
by ucim
Wed Oct 10, 2012 3:04 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

newbie- Thanks for the post of the Relativity created terms. As I am not allowed terms like coordinate point, I disagree with them all. What is the idea or concept you are attempting to express when you use your term "coordinate point"? Jose That a point in a Cartesian system identifies t...
by ucim
Wed Oct 10, 2012 1:20 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

steve waterman wrote:newbie-
Thanks for the post of the Relativity created terms. As I am not allowed terms like coordinate point, I disagree with them all.


What is the idea or concept you are attempting to express when you use your term "coordinate point"?

Jose
by ucim
Tue Oct 09, 2012 2:33 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

an event is NOT a point, as every point is not an event. An event is an occurrence, aka a star exploding, not just some location. hence a huge reason why confusion exists... Yes, the words "point" and "event" each have several different definitions. The listener and the speaker ...
by ucim
Mon Oct 08, 2012 10:41 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Jose, I would see it as a spot in space and a moment in time, not conceptually, as spacetime. I picked the word " spot " because the word I wanted to use ("point") has been used to mean a point in space, and has also been used to mean a point in spacetime. The two are not the sa...
by ucim
Sun Oct 07, 2012 5:28 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

There is no absolute sequence of absolute events, is what I understand Relativity tells us, there is only observed orders of variable sequence. Close, but with an important, though subtle, difference. Each event has an absolute spot in spacetime . I am using the word spot in order to avoid the word...
by ucim
Thu Oct 04, 2012 1:18 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Stephen, are you with me regarding my post about finding "absolute North", and how North and East can be turned into one another ("Part the first")? Does your understanding of the situation there match mine 100%? I don't want to proceed unless you are completely with me here, and...
by ucim
Mon Oct 01, 2012 1:09 am UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Part the First , in which a framework is created entirely in a commonly understood realm. Find Philadelphia, PA (USA) on a (good) map. About fifty or so miles north-ish of that is a city called Bethlehem. Within about forty nautical miles (80 km or so) are two little towns. They are Shenandoah and ...
by ucim
Sun Sep 30, 2012 7:43 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Will it help resolve the issue of real/actual versus observed? A person is observed to be shorter the greater the distance from the observer. That is not under debate, that their height itself remains constant. Yes. I am not dealing with the use of the word "observed" that means "app...
by ucim
Fri Sep 28, 2012 3:32 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 495992

Re: 1067: "Pressures"

Steven, I think I see where you are getting hung up with relativity. There is a concept that you need to get your head around (whether it is "true" or not) before you will be able to see what we are saying. I have an idea as to how to do this, but it will involve (at least temporarily) let...

Go to advanced search