Post by MikDaTv on Jun 25, 2010 17:41:35 GMT -5
It has been argued that a Black Dwarf Star would technically be the end of a Star's life. However, if that were the case, would the star not simply collapse or dissolve?
It did collapse. thats the point. The star collapse and became a black dwarf. it has no energy left. It's spent. It's out of gas. It's done.
The galaxy does not function in a manner indicative of wasting precious finite energy by simply leaving it bunched up in one spot to die.
no, the galaxy apparently sits around and writes poetry about how wonderfully effecient it is.
Galaxies, stars, planets and pretty much all celstial bodies operate in the order of millions and billions of years. A black dwarf is dead. a floating mass of matter once was part of a bright burning star. It's mass is unchanged and therefore it's gravity is unchanged. From this we can assume that all other celestial bodies that were present in the system are still trapped within it's gravity well. Eventually this system will run into some other system a few billion years down the road.
Both stars are formed dependent on chemical composition, not age or energy.
Thats just flat our wrong. i'm not sure how you can write this after you just gave a pretty good description of what a brown and white star in the paragraphs above.
A White dwarf is nearing the end of its life cycle. it's expended most of it's hydrogen and it's running out of gas. As fusion within the star decreases due to less hydrogen, the star begins to collapse because it starts to lose the power to fight it's own gravity. It becomes a white dwarf because it's old and running out of fuel for energy.
A brown dwarf is formed when a proto star doesn't have enough mass to achieve Hydrostatic equilibrium. Gravity pulls the protostar together but it doesn't have the mass required to set off nuclear fusion. It's young and doesn't have enough energy to form into a main sequence star.
Therefore, it is speculation to say that they are devoid of energy merely because of color. A star in definition has to have energy, or else it couldn't give off heat at all.
A Star, yes. A black/white/brown Dwarf, no. They are called by a different name because, low and behold, they are different. imagine that.
As for its chemical composition, one could reason that it would be hydrogen. This is simply because most stars spend most of their lives fusing their hydrogen, leaving mainly carbon. But a Black Dwarf Star lacks even the heat of a Brown Dwarf, which already has the inability to fuse hydrogen.
A black dwarf lacks even the energy of a brown dwarf because it's already burnt off all it's hydrogen and helium and every other element on the periodic table of elements up to carbon.
Even so, that isn't to say that they don't give off heat, or that they are old. It stands to reason that Black Dwarf Stars are actually some of the youngest stars in the galaxy, and that they are also some of the coolest
no... no it doesn't stand to reason. it actually stands to unreason. They're old, and they're dead. thats why they're cold.
However, simply because it is young and doesn't burn brightly doesn't mean that it lacks energy.
actually yes, thats exactly what it means.
As such, I can hardly presume to relay my own beliefs, as I can't know what Grand was thinking.
And you never will know, because Grand wasn't thinking.
Well, that mess was quite difficult to sift through.
Yes i can imagine considering you apparently only did it with half a brain.
According to your earlier posts, Black Dwarf Stars are naught but theoretical, so how can you state that information as fact? Not to mention how illogical it is
Lets say i put your head under a guillotine and pull the lever that lets go of the blade. Now, until your head actually gets chopped off it's only a theory that your head is going to be severed from your body. But because the French had brains and apparnetly a desire to see brains strewn about all over the floor, they could reason their way though making an invention that satisfy their desire.
Same with a star. We know what is in a star. We no the elemetal makeup of stars in the universe because we look at them. We know how the stars behave because we have an understanding of physics. And we can predict how and what a star will become in time because we have an understanding of math.
We know that stars begin their lives as mostly hydrogen. That hydrogen is undergoing constant nuclear fusion. As that hydrogen is fused, it becomes helium. That act of fusion is what releases the energy we enjoy every sunny day. That helium will eventually fuse with other hydrogen atoms and become lithyum and so on and so on until it reaches carbon. At this point the star begins to die. it's remaining stores of hydrogen can not fuse with carbon so it will keep going until there's no more hydrogen left to fuse. it will litterally run out of gas.
Because it's fusion becomes less and less due to less and less gas, the star will start to shrink because gravity begins to overpower the expansionary forces of thermonuclear fusion and it loses Hydrostatic equilibrium.
The star shrinks to a certain point where the pressures involved allow all the helium and lithyum to fuse and this extra energy released brings back the equilirbrium somewhat. At this point it is a white dwarf.
Now, eventually even the helium and other gasses will run out and equilibrium is lost again causing more shrinkage. The star collapses until there's nothing left but carbon because the carbon will not fuse and all the other gasses have been expended.
The gravity is so great that the pressure on the carbon will crush it so much that it might form into diamonds.
Now, is this all theory? yes, it is. But it's a logical, well informed, and heavily researched theory. matter/energy can not be created, nor destroyed so unless somewhere along the line, new matter or engery is injected into the star it will eventually just lose all its energy through constant fusion.
Black Dwarves would actually be prime suppliers of energy. Carbon is one of the building blocks of life, and life cannot exist without energy.
ok, now your just being intentionally stupid. Carbon is an element. no more, no less. It does not have some kind of mystical energy that allows life to flourish. It's simply what our bodies are made of.
Even in a condensed and expended state, Black Dwarves would need some kind of energy to compress as you describe. This energy would be far less hazardous to harvest than that from a hotter, larger star.
Yes, that energy is called gravity. and we've already harvested it's great potential for energy generation with devices like the water wheel.
now i know it's been 2 years and i know you'll probably never see this, but i'm bored, and you deserved all of this but cain locked the topic before i could bundle all this up and shove it up your ass.
My work is done here.
