Theories of the universe

yantorsen said:
so why didn't you just say it?

and could you please apply what you've appaerently been trying to say to the expansion of the universe please.
Click to expand...

I have - I'm speaking of the 2 theories. that have arisen from you and the other person, but you thought mass = density when they are 2 different properties.
 
dense /dɛns/ Pronunciation Key - Show Spelled Pronunciation[dens] Pronunciation Key - Show IPA Pronunciation
–adjective, dens·er, dens·est.
1. having the component parts closely compacted together; crowded or compact: a dense forest; dense population.
2. stupid; slow-witted; dull.
3. intense; extreme: dense ignorance.
4. relatively opaque; transmitting little light, as a photographic negative, optical glass, or color.
5. difficult to understand or follow because of being closely packed with ideas or complexities of style: a dense philosophical essay.
6. Mathematics. of or pertaining to a subset of a topological space in which every neighborhood of every point in the space contains at least one point of the subset.
Click to expand...

mass /mæs/ Pronunciation Key - Show Spelled Pronunciation[mas] Pronunciation Key - Show IPA Pronunciation
–noun
1. a body of coherent matter, usually of indefinite shape and often of considerable size: a mass of dough.
2. a collection of incoherent particles, parts, or objects regarded as forming one body: a mass of sand.
3. aggregate; whole (usually prec. by in the): People, in the mass, mean well.
4. a considerable assemblage, number, or quantity: a mass of errors; a mass of troops.
5. bulk, size, expanse, or massiveness: towers of great mass and strength.
6. Fine Arts. a. Painting. an expanse of color or tone that defines form or shape in general outline rather than in detail.
b. a shape or three-dimensional volume that has or gives the illusion of having weight, density, and bulk.

7. the main body, bulk, or greater part of anything: the great mass of American films.
8. Physics. the quantity of matter as determined from its weight or from Newton's second law of motion. Abbreviation: m Compare weight (def. 2), relativistic mass, rest mass.
9. Pharmacology. a preparation of thick, pasty consistency, from which pills are made.
Click to expand...

vol·ume /ˈvɒlyum, -yəm/ Pronunciation Key - Show Spelled Pronunciation[vol-yoom, -yuhm] Pronunciation Key - Show IPA Pronunciation
–noun
the amount of space, measured in cubic units, that an object or substance occupies.
Click to expand...

I think you are incorrect.
 
Last edited:
stevenazari1 said:
no mass does not equal density at all. most dense = solid > liquid > gas = less dense
Click to expand...

If this is your understanding of basic physics you will struggle to get your head around anything as advanced as theories of the universe.

By your definition mercury is less dense than lithium and water cannot be at its greatest density at approximately 4 oC.

:o
 
yantorsen said:
I think I am correct :p


Density equals mass divided by volume.

you still havn't told me what the properties of matter have to do with space expansion?
Click to expand...

density requires mass and volume but they are not the same thing which is what you have mixed up. and as space is infinite mass is only equal to its density. eventually the density of the galaxy would be so spread out it would not be classed as a single entity.

it is my entire point. consider space your glass/table, consider the universe as the water and consider the galaxies your particles. get the picture yet?
 
DavidMarq said:
If this is your understanding of basic physics you will struggle to get your head around anything as advanced as theories of the universe.

By your definition mercury is less dense than lithium and water cannot be at its greatest density at approximately 4 oC.

:o
Click to expand...

care to explain?

density = particles pact in a mass
mass = area available to density
 
Last edited:
yes but what I am saying is that the more stars etc in a galaxy = the more spread out that galaxy can becomre before it has expanded too much to be classed as a single entity.
 
DavidMarq said:
Take a look at a temperature verses density curve for water, it is at its most dense at about 4oC whilst still in the liquid phase, ice the solid phase is less dense.

Mercury has more mass per unit volume than lithium.
Click to expand...

but that is exactly my point -_- I was being general so they might understand better. In general a solid is more dense than a liquid, a liquid is generally more dense than gas.

maybe I should have said a big steel ball is more dense than a big plastic ball. would that have satisfied you?
 
Last edited:
stevenazari1 said:
yes but what I am saying is that the more stars etc in a galaxy = the more spread out that galaxy can becomre before it has expanded too much to be classed as a single entity.
Click to expand...

If the volume of the universe is infinite and the matter contained within it is finite then it could be argued that the density of the universe is zero.

You need to get a clearer understanding of which aspects of the universe you consider to be infinite and the nature of that infinity,
 
You must log in or register to reply here.
Back
Top Bottom