7th October 2006 - 11:49 PM
First post, woot! Glad to be here.
But anyway, just to cut to the chase; I'm not a great physicist, atm I'm taking Regents Chemistry in the 10th grade. But I try to study what I can of physics in my time, and, although my efforts may be in great vain; I have tried to find a formula that will estimate the volume of the universe.
Of all the viable shapes, the sphere seemed the most appealing to the shape of the universe; on account that many things seem to attain a relatively spherical form (from atoms, to the planets, to the sun, etc.)
But the equation nonetheless states, in english, "Four thirds of pi, times the speed of light, to the third power.
[4/3π (3.00 X 10^8)]^3
When I calculated this equation, I emerged with the results 1.98 X 10^27
However, upon coming with this answer I realized two flaws; for one, the volume was incredibly small for the ENTIRE universe, and secondly, I had failed to put into account C=3.00 X 10^8 meters per SECOND. I felt that the best solution were to transform meters per second, into meters per lifespan of the universe. In other words, meters per 1.37X10^10
I did this, I transfered seconds to minutes (X60) then to hours (X60) to days (X24) years (X365.4) to 1.37X10^10. The exact numbers I recieved along the way I do not have offhand; but I emerged with the total number 1.29 X 10^35.
But yet, after I came to that conclusion I had a series of stange answers; sometimes the number I recieved in the equation were simply 1.29X10^35. Yet other times I attained something like 2.00X10^89, or 1.53 X 10^157; and once by some strange occurance I attained 1.29 X 10^1190. Hence all this data is not highly precise, or perhaps even remotely accurate. But I'm sure with time, and perhaps some help w/ you all I can either turn this formula into something fessable, or just denounce utterly as rubbish.
Anyone have any opinions at all about this?
8th October 2006 - 12:54 AM
Thats a neat idea, but there are a couple of problems:
1. The universe hasn't necessarily had a uniform velocity in its expansion, currently it is thought that the universe is expanding faster than the speed of light. Also, "in the beginning", many physicists believe the universe underwent a rapid expansion and blew up to an enormous size very quickly; see expansion theory.
2. Who knows how much "volume" there is in any hidden dimensions (if there are any)
3. There is no guarantee that the universe expanded in a sphere like shape. I just read an article about an experiment that concluded the universe has a 3-d elliptical shape. (ill find it for you if you wish)
4. Nice try, keep up the curiousity
8th October 2006 - 01:03 AM
I did some quick math using ur method:
Age of the universe: 13.7 billion years
Approx. pi: 3.14
speed of light: 300000 km\s
= 4.99*10^31 cubic km
8th October 2006 - 01:16 AM
Gee thanks for the help NeutrinoQ; I actually read up on how they said the universe was elliptical, course I couldn't find the formula for the volume of an ellipse (strange how I'm trying to find the Universe's volume while I myself just a week or 2 ago managed to commit to memory the volume of a sphere, haha)
There's actually been another thing though on my mind though; concerning magnetic fields. I'm sure something like this may've already been discovered. But I've also been recently interested in a potential constant.
DavgB=M x A Constant
I've been trying to find a constant that can explain the average distance from the average outermost point on a magnetic field to the center of the object. For example if you were to take the mass of Earth and times it by this constant, you could identify at which point the magnetic field ends. I, again, am probably failing to put into consideration many aspects of Physics such as Electrical Potential and Potential Energy, so on so forth.
8th October 2006 - 02:31 AM
Technically the magnetic field extends out into infinity
if you put two oppositely charged particles millions of lightyears away from each other (assuming there are no other charges or masses in the universe), then eventually over time, they would come together.
8th October 2006 - 08:50 AM
universe is too big for
its volume to be discussed
from that point of view universe will remain secret for ever