unicorn

alokmohan · Mar 11, 2007

The unicorn (from Latin unus 'one' and cornus 'horn') is a legendary creature. Though the modern popular image of the unicorn is sometimes that of a horse differing only in the horn on its forehead, the traditional unicorn has a billy-goat beard, a lion's tail, and cloven hooves, which distinguish him from a horse.[1] Marianna Mayer has observed (The Unicorn and the Lake), "The unicorn is the only fabulous beast that does not seem to have been conceived out of human fears. In even the earliest references he is fierce yet good, selfless yet solitary, but always mysteriously beautiful. He could be captured only by unfair means, and his single horn was said to neutralize poison."http://en.wikipedia.org/wiki/Unicorn. Surprised in this column?Is not black hole like fictitous unicorn?Say yes or no.Kip Thornes book initates to reply that black hole is not unicorn.

kyle_baron · Mar 11, 2007

Well, I say a blackhole is like a Unicorn. Has anyone ever seen either one? <img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> </div>

alokmohan · Mar 12, 2007

But black hole is established by general theory of relativity.Any prediction of this theory has never been wrong..So most probably black holes exist.Cygnus 1 is a case in point.

SpeedFreek · Mar 12, 2007

Yes we have quite a few observations that seem to imply the existence of black holes and a few black hole candidates already. Do we have any observation or evidence for unicorns? <div class="Discussion_UserSignature"> _______________________________________________ SpeedFreek </div>

kyle_baron · Mar 12, 2007

Yes we have quite a few observations that seem to imply the existence of black holes and a few black hole candidates already. Do we have any observation or evidence for unicorns? Understood. That's not my point though. No one has seen a live blackhole, and no one has seen a live unicorn. That's all I'm saying, nothing more. I'm not saying they're both ficticious, I'm saying they're both unobservable. We're argueing about nonsence here. <img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> </div>

SpeedFreek · Mar 12, 2007

Yes, I know what you mean, although I might debate your use of the word unobservable, and wish to substitute a simpler unobserved as of this time. And for all we know, there may have once been a creature that somewhat physically resembled what we call unicorns, earlier in mankinds history. Ancient man often attributed mystical qualities to animals. Maybe they became extinct, but we retain a trace of them in mythology. Doubtful I know, but there is a small possibility. I see the difference between the two in that we have logical reasons to suspect the existence of black holes, and some likely looking locations for them, whereas we have less logical reasons to suspect unicorns ever existed, and no likely looking candidates from fossil evidence. I'm not sure I would term either as nonsense, but I would say unicorns were more nonsensical than black holes. (Although I can see how this is argueable from both sides!) <div class="Discussion_UserSignature"> _______________________________________________ SpeedFreek </div>

alokmohan · Mar 13, 2007

Black holes probably exist,scientists say.Unicorn does not exist.

saurc · Mar 13, 2007

I would rather believe in black holes than in unicorns, but I didn't get the point you were making. Do you mean to say that black holes are both 'good' and we are 'afraid' of them, like the legendary unicorn?

alokmohan · Mar 14, 2007

No black hole is best concept in theory of relativity.It was seeded by Einsein and he some how thoght it canot happen reall;y,it was his mental limitation.So far scientist are having allergy to black holes ,as if they were gorgoyles.Sad stuff.Schwarschild was disowned The Schwarzschild radius (sometimes historically referred to as the gravitational radius) is a characteristic radius associated with every mass. It is the radius for a given mass where, if that mass could be compressed to fit within that radius, no known force or degeneracy pressure could stop it from continuing to collapse into a gravitational singularity. The term is used in physics and astronomy, especially in the theory of gravitation, general relativity. In 1916, Karl Schwarzschild obtained an exact solution[1][2] to Einstein's field equations for the gravitational field outside a non-rotating, spherically symmetric body (see Schwarzschild metric). The solution contained a term of the form 1 / (2M − r); the value of r making this term singular has come to be known as the Schwarzschild radius. The physical significance of this singularity, and whether this singularity could ever occur in nature, was debated for many decades, and a general acceptance of the possibility of a black hole did not occur until after World War II. The Schwarzschild radius of an object is proportional to the mass. Accordingly, the Sun has a Schwarzschild radius of approximately 3 km, while the Earth's is only about 9 mm. An object smaller than its Schwarzschild radius is called a black hole. The surface at the Schwarzschild radius acts as an event horizon in a non-rotating body. (A rotating black hole operates slightly differently.) Neither light nor particles can escape through this surface from the region inside, hence the name "black hole". The Schwarzschild radius of the Supermassive black hole at our Galactic Center is approximately 7.8 million km. The Schwarzschild radius of a sphe

CalliArcale · Mar 14, 2007

I'm puzzled. What makes you think scientists don't like the idea of black holes? The scientific mainstream today pretty much accepts them as a reality. <div class="Discussion_UserSignature"> "People assume that time is a strict progression of cause to effect, but actually from a non-linear, non-subjective viewpoint it's more like a big ball of wibbly wobbly . . . timey wimey . . . stuff." -- The Tenth Doctor, "Blink" </div>

alokmohan · Mar 15, 2007

My knowledge is limited to what I understand from Kip Thornes book --Black holes and time warps.His first page first line denies that they are like unicorn gorgoyles which are merely fantasies.He stated because established scentific community always derided or under valued the significance. The existence of black hole is legacy of general theory of relativity published in 1915.Next year Karl Schwarschild worked ot equations of Schwarchild singularty.This thing is now called black hole.Einstein disowned it .As far I remember he thought nature should have a law to prevent its physical presence.S.Chandrasekhar made a mathematical prediction that if a white dwarf is of more han 3 solar masses it collapses on itself.It was in 1929.Eddington mocked and ended his carrier and he left for USA and forgot that topic and started anew.since 1960 the field reoped but with scepticism.Anyway Wheeler christened black hole in 1967 after discovery of pulsars.Even now black hole is doubted as matematical jugglery by serious scientists.I made the mention of unicon,probably Kip tThorne did for the same reason,it makes black hole a popular topic.I am prepared to clarify more .

alokmohan · Mar 28, 2007

Well established theory o f relativity indicate rhat black holes probably exist.

alokmohan · Mar 29, 2007

Black hole is legacy of general theory of relativity. But the poor chap was ignored by father Einstein.

fingle · Mar 31, 2007

Re: Ancient man often attributed mystical qualities to animals. Maybe they became extinct Or maybe the practice died out. I have seen many images of goats that have been surgically altered to have only one horn. I remember the first one I heard about, the fellow claimed that it was an old practice which was used as a way of quickly estimating the number of individuals in a herd. One out of every 25 or 50 were altered so that for a quick count you just had to look for the unicorns. And don't forget the Narwal one of those horns would have been enough to convince many people that unicorns exist. now i confused myself, what flavor is it ? <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> </div>

alokmohan · Mar 31, 2007

So unicorns might exist.

vogon13 · Mar 31, 2007

The narwhal horn is a tooth. BTW, name three other animals whose name begins with the letter 'N'. <div class="Discussion_UserSignature"> TPTB went to Dallas and all I got was Plucked !!So many people, so few recipes !!Let's clean up this stinkhole !! </div>

fingle · Mar 31, 2007

so black holes might exist. APOD 2005 october 23 - At the Center of the Milky Way APOD 2000 december 20 - Sgr A: Fast Stars near the Galactic Center I know you can't actually see the black hole, but the evidence gets stronger with more and more observations. <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> </div>

fingle · Mar 31, 2007

Re: The narwhal horn is a tooth Really, what clever little beasties. Tell that to the ancient mariner who cut it from the forehead of the great beast. Re: BTW, name three other animals whose name begins with the letter 'N'. That is a tough one -- lets me think there is that salamander type creature, the Newt and there is another sea creature the Nautilus, mmm, mmmmmm, does Nanny Gram count she's an animal. can't think of anymore, is there another ? wait does nematode count ? <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> </div>

vogon13 · Mar 31, 2007

Well you have done, young Padawan. <div class="Discussion_UserSignature"> TPTB went to Dallas and all I got was Plucked !!So many people, so few recipes !!Let's clean up this stinkhole !! </div>

fingle · Mar 31, 2007

thank you sir, I really had to rack my brains for those three, and i almost gave up too soon. Are there anymore ? will I kick myself when I find out there is something really common that i missed ? <img src="/images/icons/smile.gif" /> <div class="Discussion_UserSignature"> </div>

vogon13 · Mar 31, 2007

I would have accepted gnat, too. <div class="Discussion_UserSignature"> TPTB went to Dallas and all I got was Plucked !!So many people, so few recipes !!Let's clean up this stinkhole !! </div>

fingle · Mar 31, 2007

Well uncle Albert really had a full plate, I think we can forgive him if one or two things were not properly attended to. <div class="Discussion_UserSignature"> </div>

ianke · Mar 31, 2007

There is a bird called the nut hatch.<img src="/images/icons/wink.gif" /> <div class="Discussion_UserSignature"> </div>

alokmohan · Mar 31, 2007

Good to see your initiative.I suggest you read singularty fo benefit of all.Singularity is centre of the black hole.

spacester · Apr 1, 2007

And another called a Nene. Hawaii's native goose. <div class="Discussion_UserSignature"> </div>

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