Search found 67 matches

by lokar
Mon Nov 11, 2013 11:14 pm UTC
Forum: General
Topic: Galilean:x' with respect to S'? AND SPECIAL BONUS x' = x-d?
Replies: 908
Views: 175641

Re: Galilean:x' with respect to S'? AND SPECIAL BONUS x' = x

These are not MY definition for abscissa but rather THE accepted mathematical definition(s) for abscissa No, they're not. Not for the Galilean transformation, at least. There was an old man, who was driving his car home on the highway. And suddenly the phone in his car rang. It was his wife calling...
by lokar
Sat Nov 09, 2013 11:58 pm UTC
Forum: General
Topic: Galilean:x' with respect to S'? AND SPECIAL BONUS x' = x-d?
Replies: 908
Views: 175641

Re: Carry on my wayward son

What devilry is this? Steve Waterman, late of these parts, vowed ne'er to return, doth appear. Speak, O specter -- what tidings doth ye bring? What witchcraft hath doom'd thy soul to haunt this message board? My friends, my compatriots, who I hold to my breast, remember ye this: For as the sun need...
by lokar
Thu Oct 10, 2013 12:56 pm UTC
Forum: General
Topic: Galilean:x' with respect to S'? AND SPECIAL BONUS x' = x-d?
Replies: 908
Views: 175641

Re: Galilean:x' with respect to S'? AND SPECIAL BONUS x' = x

Schrollini, Do you agree that some mathematical method* can be employed which can determine the exact transmission time; given knowledge from 4 known locations and their own receipt time of a singular event? * regardless of whatever that method may be called Steve, do you agree that two observers* ...
by lokar
Tue Oct 08, 2013 2:01 pm UTC
Forum: General
Topic: Galilean:x' with respect to S'? AND SPECIAL BONUS x' = x-d?
Replies: 908
Views: 175641

Re: Galilean:x' with respect to S'? AND SPECIAL BONUS x' = x

i had incorrectly assumed the red readouts were actually manifested from computation of one of the intersection methods YOU HAD CORRECTLY ASSUMED IT!!! THE RED READOUTS ARE ACTUALLY MANIFESTED FROM COMPUTATION OF ONE OF THE INTERSECTION METHODS. THE BLUE ONE ARE ACTUALLY MANIFESTED FROM COMPUTATION...
by lokar
Tue Oct 08, 2013 9:50 am UTC
Forum: General
Topic: Galilean:x' with respect to S'? AND SPECIAL BONUS x' = x-d?
Replies: 908
Views: 175641

Re: Galilean:x' with respect to S'? AND SPECIAL BONUS x' = x

lokar, I believe that you wrote the following paragraph? Check this awesome Applet by Schrollini feeding it with x = 4, y = 4, t = 4, v = 0.9. Move the sliders full forth and then back till the gold circles disappear. Witness how blue circles and red circles intersect in the exact same point. You a...
by lokar
Mon Oct 07, 2013 2:34 pm UTC
Forum: General
Topic: Galilean:x' with respect to S'? AND SPECIAL BONUS x' = x-d?
Replies: 908
Views: 175641

Re: Galilean:x' with respect to S'? AND SPECIAL BONUS x' = x

Check this awesome Applet by Schrollini feeding it with x=4, y=4, t=4, v=0.9. Move the sliders full forth and then back till the gold circles disappear. Witness how blue circles and red circles intersect in the exact same point. Fuck math: using a compass and a ruler I got the NUMBERS for the gold ...
by lokar
Sun Feb 24, 2013 12:45 am UTC
Forum: Serious Business
Topic: Is it possible to have a rational debate on global warming?
Replies: 1714
Views: 319706

Re: Is it possible to have a rational debate on global warmi

If you average the insolation across a hemisphere, the equilibrium temperature were it to be receiving that insolation constantly is 303 K. Due to a non-zero heat capacity, that does not mean we would necessarily expect it to reach that temperature in a day, especially when it's cooling each night....
by lokar
Wed Feb 06, 2013 3:26 pm UTC
Forum: Serious Business
Topic: Is it possible to have a rational debate on global warming?
Replies: 1714
Views: 319706

Re: Is it possible to have a rational debate on global warmi

Just to clear up my mind. Let's say we have an ideal tiny metal sphere suspended in vacuum near a big lightbulb. Let's say the lightbulb goes on and off every hour thus radiating enregy. Let's say that when the lightbulb is switched off it instantly stop radiating. I think we can assume/agree that t...
by lokar
Fri Jan 25, 2013 8:23 am UTC
Forum: Serious Business
Topic: Is it possible to have a rational debate on global warming?
Replies: 1714
Views: 319706

Re: Is it possible to have a rational debate on global warmi

[...]If you fix an error and end up with less accurate predictions, you have not actually fixed an error. If an error that is fixed, which weakens a models accuracy, then the error is still fixed and the model is indeed better for it. [...] The goal is to get the whole model to model whats physical...
by lokar
Wed Jan 23, 2013 10:49 pm UTC
Forum: Serious Business
Topic: Is it possible to have a rational debate on global warming?
Replies: 1714
Views: 319706

Re: Is it possible to have a rational debate on global warmi

Which is worth more: A model that contains erroneous physics with high predictive power or a model that does not contain erroneous physics with low predictive power ? None of them is worth more, since each of them has major flaws which cannot be ignored. You cannot rely on a model which contains er...
by lokar
Wed Jan 23, 2013 1:17 pm UTC
Forum: Serious Business
Topic: Is it possible to have a rational debate on global warming?
Replies: 1714
Views: 319706

Re: Is it possible to have a rational debate on global warmi

Max, you're assuming that a) The atmosphere is a single body; b) The only method of heat transfer is radiation; c) The atmosphere radiates as a blackbody. As far I understand it, he's not at all. Actually, it seems to me that those are, in fact, exactly the assumptions made by climatologists he is ...
by lokar
Tue Jan 22, 2013 5:35 pm UTC
Forum: Serious Business
Topic: Is it possible to have a rational debate on global warming?
Replies: 1714
Views: 319706

Re: Is it possible to have a rational debate on global warmi

Oh, Hippo, the climate is a system which can be described in terms of energy transfer, thermal properties of various materials, optical properties, thermodynamics, and so on. You wouldn't say the climate is outside the realm of physics, would you? Of course I would. If nothing climatology dealt wit...
by lokar
Tue Dec 18, 2012 2:33 pm UTC
Forum: Serious Business
Topic: Is it possible to have a rational debate on global warming?
Replies: 1714
Views: 319706

Re: Is it possible to have a rational debate on global warmi

[...] Is it possible to have a rational debate on global warming? Listen, I'm just here to politely ask some questions out of curiosity. You've been rude and dismissive for no particular reason. I can cope with the rudeness - even if you don't come out well, but hey, this is the internet - but I ca...
by lokar
Mon Dec 17, 2012 3:19 pm UTC
Forum: Serious Business
Topic: Is it possible to have a rational debate on global warming?
Replies: 1714
Views: 319706

Re: Is it possible to have a rational debate on global warmi

Its pretty much all us. http://www.realclimate.org/images/ipcc2007_radforc.jpg Well, on the timescales we are talking about. Is the CO2 bar indicating Human (Anthropogenic) CO2 Emission or the whole Human+Natural CO2 Emission? All of it. Isn't Anthropogenic CO2 to Natural CO2 emission ratio around ...
by lokar
Mon Dec 17, 2012 1:26 pm UTC
Forum: Serious Business
Topic: Is it possible to have a rational debate on global warming?
Replies: 1714
Views: 319706

Re: Is it possible to have a rational debate on global warmi

BattleMoose wrote:Its pretty much all us.
http://www.realclimate.org/images/ipcc2007_radforc.jpg

Well, on the timescales we are talking about.


Is the CO2 bar indicating Human (Anthropogenic) CO2 Emission or the whole Human+Natural CO2 Emission?

Lokar
by lokar
Wed Dec 12, 2012 10:55 am UTC
Forum: General
Topic: Are all telephone exchanges really used?
Replies: 15
Views: 3038

Re: Are all telephone exchanges really used?

by lokar
Thu Nov 29, 2012 3:19 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

blah blah event is a Relativity thing blah blah Event is a word to describe a REAL THING. 1. Does your example talks about POINTS and TIME? Rhetorical question. The answer is obviously YES. 2. Does your example talks about "things happening in a point in space at a certain time ". Rhetori...
by lokar
Wed Nov 28, 2012 5:07 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

From his article... ...the second postulate of special relativity -- that the speed of light is constant -- [...] denies the existence of a universal time for all observers*. This is the conclusion that I object to. That's because you didn't do your homework. Your fallacy lies in your thinking: <<I...
by lokar
Wed Nov 28, 2012 4:03 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

In Relativity, one observer sees E then F. The other observer sees F then E. "The reason is that the second postulate of special relativity -- that the speed of light is constant -- denies the existence of a universal time for all observers. Even the order of events in time can be different fo...
by lokar
Tue Nov 27, 2012 5:37 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

space-like intervals means that the signal has not been received yet. Space-like intervals do indeed mean that the signal has not been received yet. At least, it means that the two events which are so separated will not have received the signal from the other. It says nothing about whether other po...
by lokar
Tue Nov 27, 2012 4:28 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

space-like intervals means that the signal has not been received yet. NO. You misinterpreted the meaning of it. The interval we are referring to IS NOT the interval between the transmitter AND the receiver. The interval we're talking about is between the TWO (or more) TRANSMISSION EVENTS for which ...
by lokar
Tue Nov 27, 2012 3:56 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

According to REALITY (and thus to relativity) it is always possible to establish a UNIQUE sequencing of transmission events separated by a time-like interval . True, but more importantly, According to REALITY (and thus to relativity) it is NOT possible to establish THE UNIQUE sequencing of transmis...
by lokar
Tue Nov 27, 2012 2:41 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

15 There is a determinable UNIQUE sequencing of transmission events In a universal time setting. 15a There is no such thing as a UNIQUE sequencing of transmission events In a Relativity setting. Wrong. According to the interval that separates the transmission events, it could be possible OR impossi...
by lokar
Fri Nov 23, 2012 4:43 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

Given enough time, no event can remain spacelike forever. You probably meant: The light emitted from any event E will eventually reach every possible sensor (like A1, A2, A3, B1, B2, B3). This is true. Yes indeed, exactly what I was trying to state. So much easier to parse than mine. But the transm...
by lokar
Fri Nov 23, 2012 3:58 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

Given enough time, no event can remain spacelike forever. WTF dude??? As pointed out a gazillion times: THE WORD SPACE-LIKE IS A QUALIFIER FOR INTERVALS BETWEEN TWO EVENTS . There is no such thing as a space-like event . When two events are space-like separated (read as: when two events separated b...
by lokar
Wed Nov 21, 2012 4:32 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

1 In Mathematical reality, when v = 0, both sets of three sensors will agree upon the transmission times and transmission spots in space for both events. 2 In Mathematical reality, when v = 0, both sets of three sensors will agree upon the order of transmissions. 3 When v > 0, in Relativity, the ma...
by lokar
Wed Nov 21, 2012 4:14 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

STEVE The intersection of the hyperbolas is a spot in SPACE- TIME . It's not a point in space. It is not a time. The intersection coordinates for the event ( t , x, y, z) are different when you switch between RED-3-sensors-set and BLUE-3-sensors-set. YOU already acknowledged space coordinates being ...
by lokar
Wed Nov 21, 2012 1:25 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

Schrollini wrote:Hey - new applet.


You might want to add the new applet to the applet home page.
Just to remind you.

Also, LOLZ for the html title! @Monika

Lokar
by lokar
Tue Nov 20, 2012 10:27 am UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

Schrollini wrote:Hey - new applet
[snip]
Choose your own Socratic dialog
[snip]


Sir, you just won the Internet.

Image

Lokar
by lokar
Fri Nov 16, 2012 11:09 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

There is an otherwise empty, flat meadow two tree stumps in it. With their eyes, any observers can identify: 1. The exact location of the one stump. 2. The exact location of the other stump. 3. The distance between the two stumps. What they cannot determine is which stump is "really in front o...
by lokar
Fri Nov 16, 2012 9:41 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

The following statements were made recently by an xkcd poster. We do recognize that with 4 sensors you can identify the exact time and space of a FIRST transmission event. We do recognize that with 4 sensors you can identify the exact time and space of a SECOND transmission event. We do recognize t...
by lokar
Thu Nov 15, 2012 5:16 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

Lokar, an observation - Please correct me if this wrong. In the Galilean, when two points share a spot in space, the coordinates are deemed EQUAL. In Relativity, when two points share a spot in space, the coordinates are deemed UNEQUAL. I do not agree and that's not the point I was trying to make. ...
by lokar
Thu Nov 15, 2012 3:20 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

While you do (seem to) recognize that any other 4 sensors set would assign the same transmission event different spatial coordinates , you are IGNORING the fact that it will assign the same transmission event different temporal coordinates . EVERY set of four sensors will assign the same temporal c...
by lokar
Thu Nov 15, 2012 1:53 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

*blah blah* Man, you're getting pathetic. We do recognize that with 4 sensors you can identify the exact time and space of a FIRST transmission event. We do recognize that with 4 sensors you can identify the exact time and space of a SECOND transmission event. We do recognize that with 4 sensors yo...
by lokar
Thu Nov 15, 2012 12:53 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

Have you seen this ? I saw that. Unfortunately, MIT's idea of open source apparently means, "Don't release the source, and don't compile for open source operating systems," which is slightly non-standard (fittingly for this thread) and leaves me out in the cold. From the OpenRelativity se...
by lokar
Thu Nov 15, 2012 9:53 am UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

This movie demonstrates mixing of time and space. It doesn't represent a Lorentz transformation, but it's still pretty cool. Have you seen this ? MIT developed a really cool software in which players navigate a 3D space while picking up orbs that reduce the speed of light, displaying all the relati...
by lokar
Tue Nov 13, 2012 5:33 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

Acknowledge that the calculated coordinates come only from the arrival times. This is the part that is unclear. Which coordinates, we have the ones in the readouts and we have the ones from the intersections? THE COORDINATES IN THE READOUTS ARE THE SAME ONES FROM THE INTERSECTION. You can express t...
by lokar
Mon Nov 12, 2012 9:48 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

KrytenKoro wrote:****

I'm getting fond of KyrtenKoro's rants...
And I almost choked on the stab via TCP/IP thing by Monika...
This thread is awesome!

BTW, anyone knows where MAXTM has gone?

Lokar
by lokar
Sat Nov 10, 2012 12:44 am UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

Hm. Lets try event 0,2,1, vB=0.5 A: 0,2,1 B: -0.58, -1, 1.15 The circles intersect, of course, but in what way do these results both match a unique value? red circles intersect at 0,2,1 wrt red's (0,0,0) blue circles intersect at 0,2,1 wrt red's (0,0,0) red hyperbolas intersect at 0,2,1 wrt red's (...
by lokar
Fri Nov 09, 2012 5:23 pm UTC
Forum: General
Topic: Relativity or something [Split from "Pressures"]
Replies: 5149
Views: 515552

Re: Relativity (?) Or Some Crap. [Split from "Pressures"]

I thought that in Relativity, that two observers ( one in motion ) cannot agree upon the transmission site-and-time, making neither the preferred system. Well, you thought wrong (even though the not-existing-preferred-system thing is true, not being correlated to the agreeing-on-the-coordinates thi...

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