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User: rahultyagi

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Comments · 38

  1. Re:are we really surprised? on The Sun's 'Quiet Period' Explained · · Score: 1

    being concerned about a cycle has nothing to do with the total life of the thing. That is like saying "Earth is >4 billion years old and we are concerned about the fact that the sun didn't rise for 2 days?"

  2. Re:No quite yet. on VASIMR Ion Engine Could Cut Mars Trip To 39 Days · · Score: 1
    hmmm... the problem is that for doing this you will also have to carry the whole asteroid with you. so, even though the thrust that will be provided by the ground asteroid should be enormous in totality, the acceleration it will provide will be mitigated to a large extent due to the necessity of accelerating the rest of the asteroid.

    Then again, that is a problem with any rocket propellant/fuel... you take a lot of fuel and then propel it away, giving you some acceleration... you know what, never mind... that was a little stupid of me... the fact that you threw away the whole asteroid at the end, means that you gained that much momentum for yourself, regardless of how fast you threw the powdered substance away. I'll still post this, just in case someone else who, like me, has forgotten all physics might start wondering the same thing.

    I wonder though, how much nuclear fuel would one have to carry to generate that much thrust? because, essentially the asteroid only gives you enormous amount of propellant to use, not fuel... to carry the amount of nuclear fuel that can propel essentially the whole asteroid away can't be a trivial problem!

  3. Re:could someone please explain on Black Hole Swallows Star · · Score: 1

    Oh damn, forgot to include the relativistic jet. Idioth. Anyhoo... black hole spins, drags stellar gas / dust / occasional star towards it (accretion disk, om nom nom), things spin around faster than the speed of light (yes, FTL. Objects can't move faster than speed of light, but regions of spacetime can move FTL relative to other regions),

    Now this doesn't make sense to me. what do you mean by "regions of spacetime can move FTL relative to other regions"? does it make any sense to talk about an object being stationary wrt a region of spacetime? if yes, then what is the relative velocity of an object that is stationary in one of these spacetime reference frames with respect to another object that is stationary in the other spacetime reference frame? FTL?

  4. Re:Correction on Giant Spiders Invade Australian Outback Town · · Score: 1

    er, actually "salt passing through semi permeable membrane along its concentration gradient" is diffusion, not osmosis. Osmosis refers to the solvent molecules moving from *their* high concentration to low concentration across a semi-permeable membrane (which generally means solvent going to the side with high solute/salt concentration and diluting it.. like raisins bloating when put in water)

  5. Re:A couple of annoying things I've found so far on Google Chrome, Day 2 · · Score: 1

    That is actually one of the more stupid things I have seen in a browser. Unless there is some setting options that I have missed, you really can't configure the new tab page to anything other than the default. The options allow you to make a "home page" and add a "home page" button on the address bar, but you really can't do anything for the new tab setting. Do they really think that I only let those people use my laptop who I don't mind knowing everything that I do?

  6. Re:Why Not Have Both? on Should We Land on the Moon's Poles or Equator? · · Score: 1
    are you sure about the circumference? I thought the diameter of moon is about 3500 km. So, in order for both of us to be true, we'll have to agree to keep the value of pi to be 1.

    Not sure if the Creator would be happy with that arrangement....

  7. premature celebration? on Tumor Suppression Gene Discovered · · Score: 2, Informative
    Any student who has taken an undergraduate course about cancer and/or signal transduction will tell you how large these networks are (which means a LOT of intricate pathways to remember for the exams... but I am digressing..). Which means that any genes whose function is as a tumor suppressor is discovered is only one out of many such genes known. Moreover, its not as if a mutation in one gene is ever a chief cause of a given type of cancer. Every mutated gene tends to increase the chances of cancer. I suspect this is another of such genes.

    So, good that we have another member of the network pinned down, but this does not mean we are going to get a cure for lung cancer within 4-5 years because of this discovery.

  8. Am I the only one? on Top 20 Geek Novels · · Score: 1

    Am I the only geek around who loves Contact? I mean, its not nearly as geeky as H2G2 but I thought it was great nevertheless. One of the better science fiction books around.

  9. Re:Factors in our favor on A Flu Pandemic? · · Score: 2, Insightful
    er... we are talking about a global situation here. your points and phrases like "recent illegal immigrants" and "obesity epidemic" should probably be qualified with a statement that you are talking about only a small minority. Possibly people living in US? The disease might not kill a single american and yet might turn out to be the biggest pandemic of all time.

    Believe me, vitamin deficiency, malnutrition, lices, bedbugs, lack of "warm bedrooms" and simple medicines and even "hot soapy showers" are probably much more common in the world than you think.

  10. Re:Death rate -- 50%? on A Flu Pandemic? · · Score: 1
    I understand your point, but the control statistic for this is probably the death rate for a random disease (or even for other "deadly" flu epidemics). Even in those cases, one does not know the number of people who are below the go-to-the-doctor threshold of symptoms.

    Considering that in most of those cases the death rate reported is about an order of magnitude less than this number I'd think that this is reasonably serious even though it does not necessarily mean that 1 out of every 2 people infected are going to die.

  11. Re:Hippocrates also observed this 2500 years ago on Kansas Board of Ed. Adopts Intelligent Design · · Score: 2, Interesting

    A little OT probably, but I'd recommend the book which contains the quote that you mentioned. "The Demon Haunted World" by Carl Sagan is everything that the Kansas Education Board members need to know. In fact, it is something that ANYONE who cares a bit about science, knowledge and argument needs to know.

    The problem with any theory is not that of natural versus supernatural. It is, in most cases, that of falsifiability. Any statement that is not falsifiable by its very nature does not give you ANY insight into anything in the world. Which means that regardless of whether it is the "truth" or not, it doesn't matter either way.

  12. Re:I've seen several. on India's Bollywood Opts for Low-Cost Digital Cinema · · Score: 0

    you really chose the worst movies to sample as far as bollywood is concerned. Except for Saathiya, the other two are probably the kind of movies which 99% of indians haven't seen (and most likely 90% haven't even heard of). I'm not saying that the movies that most indians do see are great, but you won't be able to tell that unless you sample something a bit different than these.

    Try Lagaan, Satya, Sholay, Bombay, Kannathil Mutthamittal and such... you might just find them better than a randomly chosen European movie. Assuming you don't choose a Kieslowski movie randomly.

  13. I know what it does.... on Student-Made Satellite Goes Into Orbit · · Score: 0

    transmit assignment master copies!!