Re: Uncle Dickhead, So fucking what? LOL
- From: Sam Wormley <swormley1@xxxxxxxxx>
- Date: Sun, 01 May 2005 21:10:34 GMT
The Ghost In The Machine wrote:
In sci.physics, eightwings2002@xxxxxxxxx <eightwings2002@xxxxxxxxx> wrote on 1 May 2005 05:14:52 -0700 <1114949692.833267.10470@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>:
Sam Wormley wrote:
Schoenfeld wrote:
Constant photon speed violates Heisenbergs Uncertainty Principle. Simple, really.
Schoenfeld *fails* to understand the nature of light and HUP.
This is so funny. Wormley, You have no fucking clue as to the nature of light either. So shut the *** up, you insufferably pompous dickhead.
Louis Savain
The Silver Bullet: Why Software Is Bad and What We Can Do to Fix it http://users.adelphia.net/~lilavois/Cosas/Reliability.htm
I take it you have a webpage describing the details on the nature of light?
The best I can do is from your Website:
http://users.adelphia.net/~lilavois/Crackpots/physicists.htm
I'll agree, though, that nothing can move in spacetime; the difficulties here are primarily lingual. Briefly, movement involves translation in space; this translation, for uniform movement, has a component that is linear with respect to t. (It is *not* linear with respect to v, for various reasons related to SR. However, v is accurately and correctly measurable regardless.) Were one to plot a moving point in 4-dimensions, one would get a tilted (but unmoving) line. An accelerating point would yield an unmoving curve. A stationary point yields a line perpendicular to the xyz space, parallel to the t axis.
Visualizing the line or curve incurs some difficulties, as we can only see two dimensions (the third is deduced from such things as relative eye position; closer objects require us to force our eyes inward ["cross-eyed"]) and experience another (time) by various effects, the most obvious of which is the observation of a regular process, such as the ticking of a clock, though there are others, such as the cooling of one's dinner or an iron ingot, the watching of a pot filled with water on a burner (it does boil, eventually), the movement of the sun, stars, and planets, from the Earth's rotation and revolution, and their own proper motions, etc.
The mathematical perspective of an object's movement can be expressed using the Lorentz transform:
x_A = (x_O - v * t_O) / sqrt(1-v^2/c^2) y_A = y_O z_A = z_O t_A = (t_O - v * x_O/c^2) / sqrt(1-v^2/c^2)
This transform is invertable:
x_O = (x_A + v * t_A) / sqrt(1-v^2/c^2) y_O = y_A z_O = z_A t_O = (t_A + v * x_A/c^2) / sqrt(1-v^2/c^2)
and predicts that x_O^2+y_O^2+z_O^2-c^2t_O^2 = 0 remains 0, with the corollary that lightspeed is constant (in vacuo). As far as experimentation has shown thus far, this prediction is consistent with observation, though no one's tried H. Wilson's experiment yet. [*] (We have tried measuring the lightspeed from the gamma rays of moving and decaying muons. We've also measured the time it takes for moving muons to decay, in a storage ring. Both of these show good evidence for SR.)
For most SR problems y and z are ignored; however, there are some minor problems in properly measuring them, because of the changing x_A component.
The term 1 / sqrt(1-v^2/c^2) is commonly termed "gamma" (although Einstein used "beta" in his works). I often use 'g', for simplicity in ASCII; the Lorentz transform therefore can be rewritten
x_A = (x_O - v * t_O) * g t_A = (t_O - v * x_O/c^2) * g
A number of people use the form
x' = (x - v * t) / sqrt(1-v^2/c^2) t' = (t - v * x/c^2) / sqrt(1-v^2/c^2)
which is not quite as clear IMO, as it doesn't identify which bits are with which observers. Einstein used the coordinates x, y, z, and t where I would use x_O, y_O, z_O, and t_O; he also used chi, eta, zeta, and tau where I would use x_A, y_A, z_A, and t_A (and others might use x', y', z', or t').
Others eliminate c entirely, by a judicious choice of units. For example, one can use what I term a 'nil' -- the distance light travels in a nanosecond, 29.9792458 cm exactly, or just shy of a foot -- and nanoseconds in the calculations. In such calculations, c = 1 nil/ns. Others might use light-years and years (1 light-year is approximately 9.4605362 * 10^15 m).
This leads to the rather pretty form
x_A = (x_O - v * t_O) * g t_A = (t_O - v * x_O) * g
where g = 1/sqrt(1-v^2). Of course for terrestrial experiments v is rather small -- 0.0000001 nil/ns is the speed of a car moving along the highway at 67 mph -- and can never exceed 1. c does not vanish entirely, either -- its units remain, for dimensional consistency.
As long as it's clear, it's not too big of a deal.
This transform does *not* address such things as the Airy radius and the photoelectric effect.
As for the accurate measurement of v, as A passes by O: that's fairly simple. O lays down a track with two endpoints; the first point is at his origin, the second at some distance d away, a distance that he's measured beforehand. He then waits for A to pass. noting A's leading (or trailing) edge as he does so.
If A passes by O at time t_O = 0 (which O can directly observe), A will pass by O's second mark at time d/v + d/c, as again observed by O (who is constrained to his origin).
Since lightspeed is c everywhere, this works fine; gamma here does not get involved. Of course A might be a little annoyed that O's track is too short (from his perspective), but that's his problem, and if A is a subatomic particle there's not much A can do about it as subatomic particles don't get annoyed, or even think.
So, have I defrauded you yet? :-)
Show us your "correct" space-time diagrams. Don't you wish everybody did?
[*] I don't know if anyone tried to do anything with the Huyguens probe relative to Cassini. A paper was apparently slated, but later withdrawn.
.
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