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Cerenkov radiation (BTW; the first C should really have an inverted "^"
above it, like in unicode:010C) is caused by the fact that tachyons (FTL
particles) have an negative-imaginary total energy, and they can
actually accelerate by LOSING energy; this is given off as Cerenkov
radiation
I think this thread would make more sense if it was ROT-13'd
--
From the Grey Knight
//@---signature---
// Grey Knight's site of the week:
url{ "http://mathworld.wolfram.com" }
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On Wed, 28 Nov 2001 14:45:28 +0000, s1631001 wrote:
> Cerenkov radiation (BTW; the first C should really have an inverted "^"
> above it, like in unicode:010C) is caused by the fact that tachyons (FTL
I was right there with you right up to the point where you mentioned
tachyons, which haven't been proven to exist.
Cerenkov radiation is the shockwave from plain ol' particles that happen to
be going faster than whatever the speed of light is in the medium in which
they're traveling. Same as a sonic boom, but with light.
--
#macro R(L P)sphere{L __}cylinder{L P __}#end#macro P(_1)union{R(z+_ z)R(-z _-z)
R(_-z*3_+z)torus{1__ clipped_by{plane{_ 0}}}translate z+_1}#end#macro S(_)9-(_1-
_)*(_1-_)#end#macro Z(_1 _ __)union{P(_)P(-_)R(y-z-1_)translate.1*_1-y*8pigment{
rgb<S(7)S(5)S(3)>}}#if(_1)Z(_1-__,_,__)#end#end Z(10x*-2,.2)camera{rotate x*90}
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Ron Parker wrote:
> I was right there with you right up to the point where you mentioned
> tachyons, which haven't been proven to exist.
I was using the word tachyon to refer to a particle travelling faster
than local c. Sorry, that wasn't very nice of me...
BTW: I'm trying to put together a collection of all the news.povray.org
signatures; does anyone care?
--
From the Grey Knight
//@---signature---
contact{ email "gre### [at] yahoo com" }
// Grey Knight's site of the week:
url{ "http://mathworld.wolfram.com" }
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On Wed, 28 Nov 2001 16:05:13 +0000, s1631001 wrote:
> Ron Parker wrote:
>> I was right there with you right up to the point where you mentioned
>> tachyons, which haven't been proven to exist.
> I was using the word tachyon to refer to a particle travelling faster
> than local c. Sorry, that wasn't very nice of me...
>
> BTW: I'm trying to put together a collection of all the news.povray.org
> signatures; does anyone care?
I dunno if anyone cares, but it sounds like a fun project. I've rendered
most of them, but not kept copies. Note that I have several (I think it's
up to seven now) that run in random rotation, so you might have to look
carefully to collect the whole set.
--
#macro R(L P)sphere{L F}cylinder{L P F}#end#macro P(V)merge{R(z+a z)R(-z a-z)R(a
-z-z-z a+z)torus{1F clipped_by{plane{a 0}}}translate V}#end#macro Z(a F T)merge{
P(z+a)P(z-a)R(-z-z-x a)pigment{rgbf 1}hollow interior{media{emission 3-T}}}#end
Z(-x-x.2x)camera{location z*-10rotate x*90normal{bumps.02scale.05}}
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> I think this thread would make more sense if it was ROT-13'd
Preraxbi enqvngvba (OGJ; gur svefg P fubhyq ernyyl unir na vairegrq "^"
nobir vg, yvxr va havpbqr:010P) vf pnhfrq ol gur snpg gung gnpulbaf (SGY
cnegvpyrf) unir na artngvir-vzntvanel gbgny raretl, naq gurl pna
npghnyyl nppryrengr ol YBFVAT raretl; guvf vf tvira bss nf Preraxbi
enqvngvba
V guvax guvf guernq jbhyq znxr zber frafr vs vg jnf EBG-13'q
--
Sebz gur Terl Xavtug
//@---fvtangher---
// Terl Xavtug'f fvgr bs gur jrrx:
hey{ "uggc://zngujbeyq.jbysenz.pbz" }
--
Rick
Kitty5 WebDesign - http://Kitty5.com
POV-Ray News & Resources - http://Povray.co.uk
TEL : +44 (01270) 501101 - FAX : +44 (01270) 251105 - ICQ : 15776037
PGP Public Key
http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=0x231E1CEA
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> I think this thread would make more sense if it was ROT-13'd (and
spellchecked)
Prefab enqvngvba (OGJ; guru sedge P fubsy beryl unit an verger "^"
knobbier vg, ever van havpbqr:010P) if panfry old guru smog gung gunplay
(SGY
cnegvpyrf) unit an rangier-vzntvanel bony rarely, nag girl pan
phenyl nppryrengr old YBFVAT rarely; guff if tire bass no Prefab
enqvngvba
V guava guff govern boy nor zebra far vs. vg junk EBG-13'q
--
Sobs guru Teri Ragtag
//@---fvtangher---
// Teri Xavtug'f fever bus guru jerks:
hey{ "eggs://zngujbeyq.bison.pubs" }
--
Rick
Kitty5 WebDesign - http://Kitty5.com
POV-Ray News & Resources - http://Povray.co.uk
TEL : +44 (01270) 501101 - FAX : +44 (01270) 251105 - ICQ : 15776037
PGP Public Key
http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=0x231E1CEA
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Carson radiation (BTW; the froth C shovel orderly have no irate "^"
above it, rare in Unicode:010C) vs. nasal big the fib that tracing
(FTL
particles) have no entire-imaginary opal energy, ant they can
curtly accelerate big LOSING energy; this vs. giver off abs Carson
radiation
I thing this tires owl ape moron sane if. it wax ROT-13'd
hmm - unscrambling and spellchecking the scrambled spellchecked message is
rather interesting
(sowwy)
--
Rick
Kitty5 WebDesign - http://Kitty5.com
POV-Ray News & Resources - http://Povray.co.uk
TEL : +44 (01270) 501101 - FAX : +44 (01270) 251105 - ICQ : 15776037
PGP Public Key
http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=0x231E1CEA
Post a reply to this message
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s1631001 <s16### [at] namtarqubacuk> wrote:
: I was using the word tachyon to refer to a particle travelling faster
: than local c.
"Local c"? I think that's a misleading term as c is constant. Always.
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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On 28 Nov 2001 15:56:31 -0500, Warp wrote...
> s1631001 <s16### [at] namtarqubacuk> wrote:
> : I was using the word tachyon to refer to a particle travelling faster
> : than local c.
>
> "Local c"? I think that's a misleading term as c is constant. Always.
Not really. Why do you think that c is usually expressed as the speed of
light in a vacuum. The whole reason refraction works is due to changes
in the speed of light in various materials.
c is *always* the fastest that anything can travel ina given medium, but
the actual numerical value in km/sec (or whatever the correwct SI units
are) varies from material to material.
Of course I could be misunderstanding what you mean.
Bye for now,
Jamie.
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Jamie Davison <jam### [at] ntlworldcom> wrote:
: Not really. Why do you think that c is usually expressed as the speed of
: light in a vacuum. The whole reason refraction works is due to changes
: in the speed of light in various materials.
c is the speed of light in vacuum. Period. It's constant. There are no
different c's for different media.
: c is *always* the fastest that anything can travel ina given medium
Nope, c is the speed of light in vacuum. Nothing else.
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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