Mordred Posted December 7, 2016 Posted December 7, 2016 (edited) Well once again we hit that basic problem of the equation you posted not having the correct units to keep the LHS and RHS of the equation balanced. An equation is only valid if the units on the LHS and RHS are equal under dimensional analysis. So quaranteed if you ever try getting your idea professionally peer reviewed it would be instantly rejected based on the equation you just gave. Regardless of any other data you include. Simply having that equation in your paper would cause a rejection. You will need a mathematically correct equation to replace that one. Edited December 7, 2016 by Mordred
Butch Posted December 7, 2016 Author Posted December 7, 2016 Well once again we hit that basic problem of the equation you posted not having the correct units to keep the LHS and RHS of the equation balanced. An equation is only valid if the units on the LHS and RHS are equal under dimensional analysis. So quaranteed if you ever try getting your idea professionally peer reviewed it would be instantly rejected based on the equation you just gave. Regardless of any other data you include. Simply having that equation in your paper would cause a rejection. I thought I had corrected that, it demonstrates a relationship between time and rate of expansion... Could you please elaborate?
swansont Posted December 7, 2016 Posted December 7, 2016 I thought I had corrected that, it demonstrates a relationship between time and rate of expansion... Could you please elaborate? Can you do the unit analysis?
Butch Posted December 7, 2016 Author Posted December 7, 2016 Given time = 1 (the perceived beginning of the Big Bang) expansion would= 1 as for units, we could reference the Big Bang.
Mordred Posted December 7, 2016 Posted December 7, 2016 (edited) expansion rate is usually in units equivalent to metres/second but you also need a volume value. For example Hubble expansion rate is units km/sec/Mpc. under SI units this would be metres/sec/metres. Time under SI is just seconds. What you have above expansion rate=1/t^2 if you were to take the sum of the SI units on the RHS =the LHS would mean the LHS would also be sec^2 In essence you have sec^2=1/sec^2 with no distance unit on either side of the equation. At no point in your equation have you defined a distance. For expansion you require a distance unit on both sides of the =sign. Edited December 7, 2016 by Mordred
swansont Posted December 7, 2016 Posted December 7, 2016 Given time = 1 (the perceived beginning of the Big Bang) expansion would= 1 as for units, we could reference the Big Bang. What kind of unit is the Big Bang?
Butch Posted December 7, 2016 Author Posted December 7, 2016 Can you do the unit analysis? Unity to t0 as the Big Bang is all I have for now, I am working on that however.
Mordred Posted December 7, 2016 Posted December 7, 2016 (edited) Lets try a basic example I have a 1 metre rod. That rod expands over time. Lets assume the rod starts at 1 metre. And it doubles in length every second. 1 metre/sec=1 metre/sec*100%. see how I have the same total units on either side of the equation? Here is an article covering dimensional analysis. https://www.google.ca/url?sa=t&source=web&rct=j&url=http://web.mit.edu/2.25/www/pdf/DA_unified.pdf&ved=0ahUKEwjI8Y7DxOLQAhVNzWMKHTyoDgcQFggdMAA&usg=AFQjCNH0Zupq6nh1jxaH-tV5uqG_Syz1Zg Edited December 7, 2016 by Mordred
Butch Posted December 7, 2016 Author Posted December 7, 2016 I need to map other relationships between t-1 and t0.
Mordred Posted December 7, 2016 Posted December 7, 2016 (edited) I need to map other relationships between t-1 and t0.exactly as your dealing with an expanding volume you need units of time and distance. Those units need to be on both the LHS and RHS of the equal sign As your dealing with volume you can use radius Edited December 7, 2016 by Mordred
Butch Posted December 7, 2016 Author Posted December 7, 2016 Lets try a basic example I have a 1 metre rod. That rod expands over time. Lets assume the rod starts at 1 metre. And it doubles in length every second. 1 metre/sec=1 metre/sec*100%. see how I have the same total units on either side of the equation? I understand you, however that rod and its expansion are in the relative realm... Do you understand my task at hand?
Mordred Posted December 7, 2016 Posted December 7, 2016 I understand vaguely what your trying to do but that vagueness is due to factors such as your incorrect equation.
Butch Posted December 7, 2016 Author Posted December 7, 2016 I understand my own hypothesis better the more I spend time on this forum, is it wrong for me to use it in this way? I do greatly appreciate your assistance. 1
Mordred Posted December 7, 2016 Posted December 7, 2016 (edited) try using a time derivitave such as [latex]a(t)=\frac{\dot{R}}{R}[/latex] which is radius now t_1 over radius then t_0 the over dot denotes present time. The one Link I posted earlier the other day will give you procedures on how to go from there. Edited December 7, 2016 by Mordred
Butch Posted December 7, 2016 Author Posted December 7, 2016 Here is some candy for your mind... If you entered a black hole and found another entire universe, how would the event horizon be in evidence?
Mordred Posted December 7, 2016 Posted December 7, 2016 (edited) you will still have an EH from the observer perspective on either side. Strange as this sounds but GR does work for FTL if your observers are also FTL. Though in both cases the infinity problem still exists for v=c. Edited December 7, 2016 by Mordred 1
Butch Posted December 7, 2016 Author Posted December 7, 2016 try using a time derivitave such as [latex]a(t)=\frac{\dot{R}}{R}[/latex] which is radius now t_1 over radius then t_0 the over dot denotes present time. The one Link I posted earlier the other day will give you procedures on how to go from there. Good stuff, thank you, I intend to do this with photon frequencies.you will still have an EH from the observer perspective on either side. I was thinking perhaps CMB... Just a thought.
Mordred Posted December 7, 2016 Posted December 7, 2016 (edited) Good stuff, thank you, I intend to do this with photon frequencies. Those earlier links will take that equation and transform it to the redshift equation. I was thinking perhaps CMB... Just a thought. So your thinking of using the CMB as a cosmological event horizon. Gotcha however note the CMB is roughly z=1104. Edited December 7, 2016 by Mordred
Butch Posted December 7, 2016 Author Posted December 7, 2016 Those earlier links will take that equation and transform it to the redshift equation. So your thinking of using the CMB as a cosmological event horizon. Gotcha however note the CMB is roughly z=1104. Fuel for expansion.
Mordred Posted December 7, 2016 Posted December 7, 2016 (edited) Fuel for expansion. In a thermodynamic sense yes. The CMB is the turnover point from a radiation dominant universe to the matter dominant universe until the cosmological constant became dominant around the universe age 7 Gly roughly exact value depends on which dataset your using Edited December 7, 2016 by Mordred
Butch Posted December 7, 2016 Author Posted December 7, 2016 In a thermodynamic sense yes. The CMB is the turnover point from a radiation dominant universe to the matter dominant universe until the cosmological constant became dominant around the universe age 7 Gly roughly exact value depends on which dataset your using Does energy leave our universe via a black hole? I have been checking out the links, awesome tools. Thanks
Mordred Posted December 7, 2016 Posted December 7, 2016 (edited) Lets be careful here Energy is a property Which is the ability to perform work. However mass via infalling matter is lost. So via mass density vs energy density relations in a sense via e=mc^2. Though that adds mass to the BH itself Edited December 7, 2016 by Mordred
Butch Posted December 7, 2016 Author Posted December 7, 2016 We can ignore it completely for now, but how about this a photon created at t-1 would have a wavelength approaching 0 at t0 the wavelength would approach infinity.
Butch Posted December 8, 2016 Author Posted December 8, 2016 I have a unit, it is indeed the Big Bang, t-1 is 3.8billion years ago and if I am correct will remain so. It needs a name and a symbol... Mordred, would you do the honors. Please.
Mordred Posted December 9, 2016 Posted December 9, 2016 (edited) Without worrying about whether or not your model works. For symbology one can just use subscripts. ie [latex]t_{cmb}, t_{now}, d_{cmb}, t_{bb}.....[/latex] etc keeps the symbology straight forward with less characters used. If you don't know latex yet just type t_{whatever} your identifying the variable to ie time,distance, coordinate, particular event, etc. Edited December 9, 2016 by Mordred
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