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Xittenn

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Everything posted by Xittenn

  1. @I think out of the box I'm sorry but your posts are not organized well enough for me to follow. I did however understand your statements with respect to the conversion of light speed in miles to light speed in lightyears per second. conversion of light speed in miles to light speed in lightyears per second There is obviously no direct correlation with pi using correct values for all properties. If you are suggesting that there is a convergence on pi, I would think this would be the case with a converging permeability and/or permittivity of a reference space. I think if this permeability and/or permittivity were converging on zero, the lightyears/second velocity of light would increase and diverge from pi. You are also focusing on numbers that are units associative and the values change with units chosen. Who uses miles in science? Maybe, instead of focusing on the importance of this ratio's value, maybe adjust your focus on finding the importance of the circle and its ratio of the radius to the circumference, in understanding gravity. That is if it exists! And again you keep referencing little g like it was special. It is so not special and it is not some referencing constant . . . .
  2. Xmas books list finally includes the much revered Spivak's Calculus. Hopefully good prep for Rudin's 3 books on Analysis . . .

    1. Xittenn

      Xittenn

      I actually already have ordered Munkre's Topology and have not yet ordered Rudin's books. I'm not sure if I should read it before or after Rudin's first two books.

  3. You could always implement liquid breathing, like in the movie the Abyss. I'm kind of curious why sliding to a stop is seemingly being dismissed. The likelihood of traveling on land, at rates exceeding 400km/h, will not only most likely be done on a straight away, but will also most certainly be done on an empty plane. There will more likely than not, not be anything that this person is going to hit aside from the flat surface that is the ground. Motorcyclist suits are designed to allow the rider to slide to a stop, this is already the reality.
  4. To further contrast and make clear the difference between little g and big G: The force due to gravity between the center of mass of two objects is equal to [math] F_g = \frac{G m_1 m_2}{r^2}[/math] Any unbalanced force is equal to a mass multiplied by the experienced acceleration as such [math] F_{un} = m a[/math] Now often a gravitational system is representative of one large body and one small body e.g. a planet and a person. If we divide the [math] F_g [/math] of a planets mass acting on that of a person, by the mass of the person, we arrive at a general value for acceleration experienced by any mass whose center of mass is of the same distance where the original force is experienced. where [math] m_2 = m_{person} [/math] [math] F_g \div m_2 = \frac{G m_1 m_2}{r^2} \div m_2 = m_2 a \div m_2 = a = g [/math] and g near the the Earth's surface is apx. ~[math] 9.8 \frac{m}{s^2} [/math]
  5. IPT Publishing and Training Ltd. releases prints that include proper rigging procedures and standards, if there are any questions with regards to the equipment used and proper functionality. These are thorough publications that serve as reference manuals for trade professionals.
  6. G the gravitational constant found in the [math] F_g [/math] equation is a pretty stubborn [math] 6.67300 \times 10^{-11} \frac{N m^2}{kg^2} [/math]. Little g or the acceleration due to gravity near the earths surface is not a constant, and is also an approximation and varies depending just how close you are to the earths surface. You are also using only two significant figures with pi so the precision of their equivalence would be questionable. If your correlations between these two numbers had any verifiable truth, this would make Earth an unusually special place.
  7. Most likely their figure just doesn't meet the dynamic requirements of a swinging load, and they are giving you fair warning. Just to be slightly clearer. If you suspend a 2000kg load, at rest the downward force is 19600N, and this would be the force of tension on the wire. If a force accelerates the mass during lift, you will have to vector sum the forces to get a value that is greater than the maximum rating. Also think, at some point it will be required that a force will be applied that is greater than 19600N to accelerate the mass into upward motion.
  8. No, I'm specifically inquiring about Aerogel Optics.
  9. The acceleration from 0 - 700km/h is quite high, on the order of 6.5 g. Regardless, to ensure survival of a spill from a vehicle under the conditions given, the best approach would not be to design a suit that absorbs direct impact. The conditions given suggests that the initial velocity, post falling from the vehicle, will be parallel with respect to the ground. This means that you will not be approaching the ground perpendicularly at this incredible velocity, and so immediate impact energies will not reflect such a hypothetical condition. In this case you would be best to design a suit that maintains temperature and integrity as your mass is slowed by the friction with the ground as you slide across it. Have you ever watched the show Ridiculousness?
  10. You would have to equip the helmet with inertial dampeners, but these don't exist so . . . . .
  11. There are tanks that use steel plating that is formed as sandwiches with depleted uranium. There was a tank developed a few years ago that would sense incoming projectiles and eject the plating towards the projectile. The expectation was that if it was an incoming missile, the explosion would take place further away from the tank thereby reducing the damage incurred by the tank itself. Just sayin' . . .
  12. I used to manufacture log chain. We would form the side bars using a 50 Ton Press and then weld in the barrel. For special orders that required a hardened finish, we then sent the formed links for heat treating, prior to riveting and assembly of chain sections. Often we would also use heat treated rivets. Heat treated product was considered to be of a higher quality, more durable, and was graded as such. There were also options for further product treatment that included a dip in a tar like substance, mostly for rust prevention. I also recall having heat treated a number of finished steel bearings. These were CNC Machined and then hardened using the same technique. I think the stages here are important. First you machine annealed steel and then you harden it.
  13. I was just wondering if anybody had anything interesting to say on this subject. A quick Google says that there is a relatively new diamond based form of Aerogel that might find application in optics. I have a number of reasons to be interested in this, but nothing immediately comes to mind with respect to selection of an Aerogel, implementation of the material in optics, or other design considerations. I want a telescope, so my first instinct is to try and visualize a process whereby I can make one myself. I'm also interested in applications in Microscopy.
  14. Getting the right or the best textbook is always of importance, and choosing the best text can be difficult. Most general subject texts provide sufficient overview of what you should already know so that you could read it to completion. So if you pick up a book on Organic Chemistry, you will be more aware of the subject matter when you enter into your degree. I like to gain exposure to a subject before I am formally educated in it. There have been times however, where I have taken longer on the details of problems because I wasn't adequately prepared in the basics. High School textbooks are a great source of information, and a more thorough reading of the material than presented in class can reveal many details left out by the instructor about the subject. Being that you are so close to entering into post-secondary, you might want to save your pocket money, and raid your local public libraries chem section. Also, novelty tends not be a good reason to pursue a subject. Going ahead and reading some of the texts might enlighten you to the formal nature of the subject, and may affect how you feel about your future investment.
  15. I was just making it clear, that this was all I really had to say. Unless the Psychologist works in a specialization that focuses on brain function like Neuropsychology, then the Psychologist is more than likely focused on some form of Behavioural Psychology and is not capable of providing care outside of their research. A Psychiatrist on the other hand, is formally trained in most areas of mental and behavioural disorders. A Psychiatrist might specialize in certain disorders within their practice, as opposed to within their education and residency. The fact that a Psychiatrist can prescribe the necessary meds just further adds to the number of reasons why someone who suffers from any mental disorder should, and probably would see a Psychiatrist first. A Neuropsychologist may still not have any proper education in Autistic Spectrum Disorders. Firstly, I made this statement. It is not the logical consequence of what I had said. If someone chooses to be an alcoholic, and their alcoholism causes an internal chemical imbalance that results in a mental disorder, then the mental disorder is a result of the internal chemical imbalance. The drinking might be caused by environmental or social factors. If someone is bumped on the head and there is internal bruising that causes a mental disorder, the mental disorder is caused by internal bruising.
  16. In regards to digital media, digital pyrotechnics is always exciting. I think individuals who get involved often start as Firemen, which requires a degree, at least where I am. The working environment involves more animation studio as opposed to software programming. It still requires tool development programming, but works with scripting languages. As an effects engineer you would be required to be pretty thorough with your applied mathematics. I do recall a prior thread where I had linked a graduate program that could be customized to meet goals of these sorts.
  17. I'm suggesting that it is the profession of the Psychiatrist who has better authority over the matter. I'm sure any amount of supporting care could be employed should need be. I hadn't made any statements about genetics, I will say that I believe them to be purely mechanical, at least the cases of real interest. And although there is some play in the defined boundaries of the disorder, I'm sure anyone who reviews any of the plentifully made available information on the subject would simply agree with this generalization.
  18. COM and CORBA are used for remoting and in defining interfaces. Most of COM's other functions is replaced by various BOOST libraries on Linux systems. We have had this discussion before, and I think if you ever tried to program a complete software solution, that you would come to realize their importance. Obviously there are a number of alternative solutions, but these two still hold with a good number of programmers, especially when working with C++. I probably should have placed more emphasis on the BOOST Libraries. An example of where CORBA is used . . . . Salome Platform. Also look into parallel programing API's, OpenMP, OpenMPI, the long list of Intel tools and so on . . . . .
  19. Something like NVIDIA Certified CUDA Programmer would be a great asset, and I would keep an eye open for an OpenCL equivalent. Your web based programming knowledge will probably not help you any with prospective employers. COM and CORBA are still the industry standard in terms of used API's for Scientific Computing, unless of course the API is an in-house pure C, C++, Fortran concoction. Learn the three languages, and also the packages most commonly used with each, like C++ & Boost. Honestly, the time required of you would suggest to me that maybe you should transfer your credits and get a second degree in Computer Sciences or Software Engineering. Ask MOLD if you can, not only is he dreamy, but he is probably the most knowledgeable about these things.
  20. Why not a brute force algorithm, it's a fairly small data set for a computer? Who is going to subscribe to 0 cookies for $300? I still don't see why the following won't work; given that cookies and subscriptions are treated as continuous and rounded after. 0 cookies for $300 4000 cookies for $500 9000 cookies for $900 20000 cookies for $1800 1) [math] P(a,b,c,d) = 300a + 500b + 900c + 1800d [/math] 2) [math] R(a,b,c,d) = ( 450 - ( a + b + c + d) )( 1,600,000 - ( 4000b + 9000c + 20000d ) ) = 0 [/math] 3) [math] F(a,b,c,d,\lambda) = P(a,b,c,d) - \lambda R(a,b,c,d) [/math] [math]= ( 300a + 500b + 900c + 1800d ) - \lambda( ( 450 - ( a + b + c + d) )( 1,600,000 - ( 4000b + 9000c + 20000d ) ) ) [/math]
  21. Could it not be solved using Calculus and assuming partial subscriptions as well as cookie pieces, followed by a rounding to whole numbers?
  22. "Do not stare down the barrel, of the 12 Gauge Magnum!" - me
  23. Cryptography functions as an aside to several novel concepts of mathematics. Although there may be a number of formal approaches to Cryptography, I do believe the concepts most often used are found throughout the broader subject of Abstract Algebra and as is applied through Group Theory. The details are lengthy, and for me to iterate to you the process would be time consuming and error prone(because I'm not very good.) I had enjoyed reading the book "Contemporary Abstract Algebra" - Joseph A. Gallian, and I had felt I had learned sufficiently about the maths to have begun a study on Cryptography should I have wanted to.
  24. Ah . . . . the subscriptions are restricted as well. Maybe modify the restriction to be the product of the number of cookies and total subscriptions?
  25. Wouldn't this simply be a case of using a Lagrange multiplier with a minimum price [math] P(a,b,c,d) [/math] restricted to the number of cookies [math] C(a,b,c,d) [/math] being equal to 1,600,000 and new formula [math] F(a,b,c,d,\lambda) [/math]?
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