The reality of energy.
in [Relativity]
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From: Inertial on 3 Mar 2010 04:21 "ben6993" <ben6993(a)hotmail.com> wrote in message news:65cd8eb8-b4b7-4737-aba4-2c0615eb8745(a)g7g2000yqe.googlegroups.com... > On Mar 2, 9:35 am, "Inertial" <relativ...(a)rest.com> wrote: > >> Have a look at relativistic Doppler shift to see how it works > > I have started. The maths will keep me busy for a while longer. I > will look at cosmological redshift and gravitational redshift, too. > > The idea of transverse redshift is very interesting, and I am > wondering if there is a transverse redshift element component to the > cosmological redshift ... but I will keep reading to find out. > > Thanks. Enjoy :)
From: Androcles on 3 Mar 2010 04:25 "ben6993" <ben6993(a)hotmail.com> wrote in message news:65cd8eb8-b4b7-4737-aba4-2c0615eb8745(a)g7g2000yqe.googlegroups.com... On Mar 2, 9:35 am, "Inertial" <relativ...(a)rest.com> wrote: > Have a look at relativistic Doppler shift to see how it works I have started. The maths will keep me busy for a while longer. I will look at cosmological redshift and gravitational redshift, too. The idea of transverse redshift is very interesting, and I am wondering if there is a transverse redshift element component to the cosmological redshift ... but I will keep reading to find out. Thanks. =========================================== Have a look at relativistic transverse blue shift and see how it doesn't work. http://www.fourmilab.ch/etexts/einstein/specrel/www/figures/img107.gif
From: glird on 4 Mar 2010 16:17 On Feb 28, 6:50 am, "Y.Porat" <y.y.po...(a)gmail.com> wrote: > On Feb 27, 3:54 am, glird <gl...(a)aol.com> wrote: > > > "Energy" is the ability to do work, an ability that > > is possessed by organized portions of matter. > -------------------- > so what is that thing > that enables those 'portions of matter' > to do work ?? Pressure, of, by and against matter. in Physics, work = md, where d is a distance. From F = ma we get, m = f/a. Substituting this value of m into the first equation we get w = f(cm)/(cm/sec^2) = pressure per second per second. glird
From: glird on 4 Mar 2010 16:57 On Mar 2, 5:48 pm, "Inertial" <relativ...(a)rest.com> wrote: > >>< by the time it reaches us it has redshifted quite a long way and to us it appeard to have a reduced energy,> > >It always had reduced energy to us. >>< can we think of that discrepancy between higher energy in its framework and its lower energy in our framework as being the entropy gain of the photon?> That depends on which of the present two diametrically different two definitions of "entropy" you use. >Nothing in the photon changed. The energy it 'has' in our frame is constant the whole time. The energy it 'has' in the frame of the star that emitted it is constant the whole time. There is no change > Bullshit! as proved by the compton effect, every time a photon interacts with an atom it happens to pass, a tiny bit of its energy is transferred to the atom and the light-waves continue on, at c, with a trifle les energy remaining in them. THAT's why the light shifts to the red. > >>>Have a look at relativistic Doppler shift to see how it works. > > > >> Will do. Particularly trying to understand the reason why the photon energy is reduced in the observer's framework. > The "relavistic" Doppler shift won't help you understand anything at all. (As of now, the red shift isn't even attributed to the recessional velocity of the source, It is asssigned to an expansion of empty space itself!! (Nonsense breeds insanity breeds physics.)
From: Mahipal7638 on 4 Mar 2010 17:15
On Mar 4, 4:17 pm, glird <gl...(a)aol.com> wrote: > On Feb 28, 6:50 am, "Y.Porat" <y.y.po...(a)gmail.com> wrote: > > > On Feb 27, 3:54 am, glird <gl...(a)aol.com> wrote: > > > > "Energy" is the ability to do work, an ability that > > > is possessed by organized portions of matter. > > -------------------- > > so what is that thing > > that enables those 'portions of matter' > > to do work ?? > > Pressure, of, by and against matter. > > in Physics, work = md, where d is a distance. From F = ma we get, m > = f/a. Substituting this value of m into the first equation we get > w = f(cm)/(cm/sec^2) = pressure per second per second. > > glird What timezone are you in and how much sleep have you had after all that moonshine? What Physics, where work=md, are you thinking of?! In Physics, the real world kind, work=fd. Force distance. At best your md is mass distance. Or a md doctor who doesn't make house calls, in the state of Maryland MD. A stupid typing joke, I confess. Please try not to help when you're not cognizant of what you type. Tia. Seeing your name/alias in Usenet is not worth the ignorance you convey. Just in and from my frame of reference. Enjo(y)... -- Mahipal In Today's real-time search and links world, perhaps Usenet should be called Usenot. |