Hii people, Well, we all know that by using perfect graphite & perfect diamond material, we can fabricate the material having more strentgh ( about 70 to 80Message 1 of 2 , Sep 4, 2002View Source
Well, we all know that by using perfect graphite & perfect diamond material, we can fabricate the material having more strentgh ( about 70 to 80 times Stronger than steel ). But can anyone tell me about the sources of graphite & diamond? . Can we get large quatity of diamond & graphite from the mines in the world so that we can replace steel.?
Please give me your suggestions.
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... The source I hear most often is air. No kidding; just air. There s more than enough carbon dioxide and other carbon sources in the atmosphere for us toMessage 2 of 2 , Sep 5, 2002View SourceMakarand Dhake writes:
> Can we get large quatity of diamond & graphite from theThe source I hear most often is air. No kidding; just air.
> mines in the world so that we can replace steel.?
There's more than enough carbon dioxide and other carbon
sources in the atmosphere for us to build structures well
beyond the scale of what we build today. Humans put tons of
extra carbon in the air every hour with cars and such, so we
could build structures on a much larger scale than today
before we'd even come close to causing depletion problems.
Raw material sources will probably become a hot topic down
the road, if only because lots of people want to build their
structures as large as possible -- plantary scale and beyond
if they can afford it. Another issue is what I've called
the "information value" of material. Today we consider most
rocks to have more value as raw material sources than as
collector's items or scientific specimins. There are good
reasons to believe that in a world of AI and true molecular
nanotech, pretty much every solid material in our solar
system will have more information value than raw material
value. We'd be better off analyzing rocks and other solids
for scientific data, then selling them off to collectors.
Much is uncertain about post-singularity economics, but as
Will Rogers observed, buying land is in general a good
long-term investment, because "they don't make it any more".
If encryption and surveillance technology enable us to
verify the authenticity of collectors items, and if the
net payment capacity of collectors in the universe is even
*expected* to keep increasing, then it's reasonable to
suppose that one of the more reliable long-term investments
in the post-MNT universe is in buying and selling things
which are desirable, yet for whatever reason, irreplacable.
True, not all of our decendants will care a whit about
"genuine rocks from Ye Olde Earth", but the key requirement
is merely that the overall pool of demand from collectors
keeps increasing faster than the overall pool of supply.
We'll still need ample sources of raw materials, of course,
but as with the carbon-from-air scenario, there should be
plenty of cheap material to be found from sources with
relatively little information value: gases and plasmas.
Just skim materials off of gas & plasma sources like the
solar wind, the outer planets, or even straight off old Sol.
It becomes even more economical if, as expected, we're able
to easily fuse the relatively abundant lighter elements
(such as hydrogen) into heavier elements (such as carbon).
So, in the shorter term, we use air. In the longer term
(and with AI and such, it shouldn't be very long), use gas
and plasma from other sources around the solar system.
Uranus was a dumb name for a planet anyway. Eat it, keeping
a record of useful data like gas densities as you progress.
With a little clever engineering, we can arrange for purists
to still have a sky that's visually similar, and even a
pretty close approximation of the original planetary orbits.
Items with human interaction should be even more valuable
per pound than, say, a mantle rock from Venus. I expect
that most forms of recycling will be regarded in the future
as an ill-conceived notion that did little to benefit us
today, yet still deprived the future of much-sought-after
relics. Would you want an old shoe thrown away by someone
during the Ice Age? Would you want it even more if you
could verify for sure that the wearer was your ancestor?
The population of decendants, in general, should keep
growing over time, so the shoe may have some investment
value as well as sentimental value. How much would you pay,
then, for a shoe that your distant grandfather threw away?
That old furnace filter you threw out last year might well
become a hot auction item to some as-yet-unborn decendant.
Furnace filters contain a wealth of information to those who
can isolate and identify the location of every atom within.
Much of the dust in the air is rich in DNA samples from
whoever was there at the time, so furnace filters keep a
record of activity that in some ways is more reliable than
written accounts -- if only for their relative lack of bias.
Imagine a future where gold is cheap, diamond is so common
as to be beneath notice, and a furnace filter or solidified
septic tank is the subject of a hotly-disputed bidding war
among old-school human holdouts & some intelligent machines
with a sentimental streak for historical artifacts.
It kind of dampen's one's enthusiasm for sorting out the
plastic and aluminum from your garbage. :-)
P.S. Argh. I did it again. This was supposed to be a
one-line reply along the lines of "get carbon from air", and
it turned into yet another interesting-but-totally-unplanned
tome of digression. I have much better things to write
about if I spend time on writing. Well, I hope this was
interesting to someone. I gotta get back to my buggy code.