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pulkit

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Everything posted by pulkit

  1. If it was in anyone's mind that these are innocent people atht we are dealing with, they wouldn't be tagged as rebels, but as freedom fighters and all their actions would be glorified and not critically analyzed (as they are being). All I say is that such people are not to be trusted.
  2. A spokesman denying it doesn't count for anything. It would actually be in their benefit to deny this to the world. Afterall it does create a very negaticve image.
  3. Its a double edged sword. If they do not declare war, the conflict could eke on for decades which in itself would mean a whole lot of blood shed as well as resource wastage. An all out war on the other hand doesn't provide any guarantees either. If it comes down to street fighting, that too could drag along for months, and of course it'd mean a lot of blood shed as well. But history has taught me to believe that such situations are better dealt with the second way. It is best to restrict the suffering to minimal time because otherwise there is no guarantee of a peaceful settlement any time later. A classic example in this regard is India-Pakistan and kashmir, at this stage the complication of matters is of such high a degree that it is difficult to see a solution to it in the next few decades. It would be wise for others to learn from this.
  4. I believe it was Enrico Fermi who once said that a day would come when half the world would be involved in building/maintaining a particle accelerator that went around the equator and the other half would be engaged in operating it. Maybe that day we can make such anti elements for fun !!
  5. As I mentioned earlier, their seem to be two years in the hindu calender one is currently 2061 the other is 1926. I myself dunno as to what their significance is. (This ones a question for grandma ! )
  6. Because the hindu calender is based on lunar cycles, as it happens our new year (we call it "maha sankranti") is not a fixed date in the english calender. If you start both the calenders at the same day, still the hindu one would be ahead, because the year is slightly smaller.
  7. So is it cheaper to use XOR gates or make them using 4 (2-input) NAND gates / 5 (2-input) NOR gates ?
  8. I am slightly ashamed to say that though being a hindu i know little about the hindu calender. ( Does anyone (Leison or bloodhound in particular) know why there are different variations in the calender.....I saw a "Vikram" year and a "Saka" year ??
  9. Draw the free body diagram for the shell being fired, calculate forces acting on it, get an expression for acceleration and integrate to get velocity. You would need a law governing pressure and volume of air inside the pressure barrel, Eg.PV= constt
  10. I have a casio, and everyone in my college has a casio, no-one uses TI here. It seems to be more than sufficient for our needs. You don't acctualy need more than about a 100 functions, which pretty much every scientific calculator has. I actualy never felt the need of buying a graphic caluculator. You always have computers to draw graphs for you.
  11. I should have stated that my formula also assumes that the angle of contact with the bottle is 0 degrees, whilst in reality this angle would be different for water and say glass (between 50 and 60 degrees). That would then account for adhesive and coersive forces too and add an extra cosine of theta factor along with h * rho * g.
  12. Java and C++ share a lot of commands. In fact you can mechanincally convert working code from one language into the other without much difiiculty. If you know Java you would not spend much time in mastering C++ and vice versa. As far as "good" is concerned it depends on what parameters you use for measuring. Certain aspects in java are much more cleaner and easier to understand than in C++ (I personally think that pointers lie in this category). But number of checks at compile time are far greater in Java than in C++ which makes it much slower than C++ in that aspect. I know Java, C++, sml (a functional programming language) and currently trying to master assembly language.
  13. pulkit

    infinity?

    In this context you assume merely because otherwise square root would become 2 valued and no longer be classifed as a function. The very fact that you refer to it as a function assumes that you talk of psitive square root. And note that positive square root has a range of 0 to infinity and hence its square will also lie in the same range thats one reason why the arguement holds. The other reason is that domain of square root is only positive numbers, you get weird results if you try to interpret square root of complex numbers or negative numbers that way because now the range is extended to complex numbers too.
  14. If you take the impedence into account, is it possible to work out a mathematical expression for minimum frequency for acceptable output ? (Assuming, you can define acceptable in quantitative terms)
  15. What do you mean by Q ? I am guessing ........ quality factor ?
  16. Could you rephrase ? I can't understand where the water is and where you are creating vaccuum.
  17. Surely there has to be a minimum frequency barrier over which pulsed DC gives acceptable results, what sort of frequency would that be ? A few 100Hz ?
  18. pulkit

    infinity?

    Maths no matter what you say is an abstract subject. If it were not so abstract it wouldn't be so difficult to define numbers. The number n is something of a property our mind tends to associate with certain collections. It is more in the mind and not so inherent in nature. It is not that I make this statements out of instantaneous thought, I have thought over this issue long and hard. One point I must add is that if maths were indeed derived from nature, mathematical laws would have the characteristics all natural laws carry. This is untrue, natural laws tend to be descriptive of real objects or even ideal objects. Maths describes abstract objects. Eg. Look at topics like group theory, ring theory, vector spaces, metric spaces etc. Lastly I would say that if it were so inherent in nature then each time a new physics theory is developed it wouldn't be associated with an accompanying mathematical theory. Science uses maths as an abstract tool, which it modifies as per requirements and needs, you can't do that to things that are inherent in nature. Maths is more inherent in the mind than in nature. As the ancient Greeks would have said it is an inate type of knowledge. Atleast read carefully what I said. I have studied enough maths and given it enough thought before I said what I said.
  19. It is not just speed but also efficiency you are talking about here. For the same energy, you get more work done. Obviously, you won't like to crouch on a bike just to conserve energy. But as far as cars are concerned, civilian cars are already quite efficient aerodynamically (otherwise they'd just guzzle fuel). If you do put in more aerodynamicity improving features it should atleast in theory help improve efficiency, and perhaps speed as well.
  20. Sygate Personal Firewall is free That is one of the reasons I tried it out. Even if its not free, just get a shareware from the net and crack the registration code.
  21. Anything that can keep viruses and trojans at bay is good )
  22. pulkit

    infinity?

    Maths is not inherent in nature. Eg. You say 2 + 2 = 4 Why ? 2 objects and 2 more objects ==> 4 objects ?? What if I considered rain drops. 2 drops and 2 more drops could very well be 1 single drop, you don't say 2 + 2 =1. Numbers are merely abstractions. I could go on and and on but this is a maths forum and not a philosophy one so I think its best not to discuss this topic here......
  23. pulkit

    infinity?

    Maths is man made. you only look to nature and try to find an equivalent form. Simple question : "What is two ?" Try and answer that without using abstractions you define in your mind. The best definition of two I have seen originates from axiomatic set theory which is completely abstract, and a man made concept. You can at best tend to asociate certain phenomena within a mathematical framework. But when you need a better framework, you just go ahead and define a new kind of mathematics Eg. Differential / Integral calculus developed to help in mechanics ........
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