What is Pure: Definition and 499 Discussions

Propulsion Universelle et Récupération d'Énergie (PURE; English: Universal Propulsion and Energy Recovery) was a motorsports engineering company founded by former British American Racing team principal Craig Pollock in 2011. It aimed to design and manufacture engines for use under the 2014 Formula One technical regulations, that mandate a switch from the current normally aspirated V8 engines to turbocharged V6 engines. The company was linked to Mecachrome, and employed former members of Renault and Peugeot's 1990s Formula One engine programmes.In July 2011, the company secured the services of Gilles Simon, formerly head of Scuderia Ferrari's engine department and the FIA technical director for powertrain development. The recruitment was controversial, with several teams and manufacturers – particularly Renault – expressing concerns that Simon's previous position with the FIA would grant him access to sensitive technical data about engine designs that could potentially be used by PURE in the development of their own engine. Simon and PURE rejected these suggestions, stating that the process of developing the 2014 engine regulations had been transparent, and that all parties involved had access to the same information so that no individual group would have an advantage. PURE used Toyota Motorsport's facilities in Cologne, Germany, whilst also maintaining a French base. In July 2012, PURE suspended its engine programme due to a lack of funding and later ceased operations.

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  1. moriheru

    Intro Math Foundations of Mathematics Book Search

    I am looking for a book concerning the foundations of mathematics. I am not talking about algebra or calculus but the foundation of the mathematical language( Axioms, sentential logic...). I hope you have understood the prior rubish. Thanks for any help.
  2. A

    Stabilizing AC Voltage: Achieving Pure DC Output

    How to get pure DC from an ac whose voltage or amplitude is increasing by time until it reaches a particular fixed value and then drops to zero
  3. V

    Understanding Vaidya Metric & Pure Radiation Stress-Energy

    I am following Vaidya metric and how it is related to pure radiation from Wikipedia. But when it reaches the line where stress-energy tensor is equated to product of two four-vectors, I cannot follow from where they are assumed to be null vectors, and why if the stress-energy tensor is given in...
  4. T

    Quantum Mechanics: Exploring the Limits of Physics Through Pure Chance

    I recently had a discussion with someone about Quantum Mechanics. His story was confusing to me but I could detect that he made an error in his thinking which I proceeded to explain : You are trying to reason from the idea that the 'collapse of the wave-function', which precedes the...
  5. R

    Auto ignition temperature in pure O2

    First of all (and I know this is not the place I'm supposed to introduce myself,) I'd like to say hi to the forums. Now onto my question. For the past few weeks, I've been thinking about an idea I had. That idea was to use pure oxygen to oxidize a combustion reaction in an engine. I'm sure...
  6. Mike Dacre

    Mixed Melting Point of Two Pure Solid Crystals

    I understand why an impure solid will have a decreased melting point, however, in my recent organic chemistry lab section I mixed two finely ground pure solids together and observed that the mixture melted at a lower temperature than either pure solid. I understand this in principle, but...
  7. Titan97

    Time taken to start pure rolling

    Homework Statement A solid sphere of radius R is set into motion on a rough horizontal surface with a linear speed v0 in forward direction and angular speed ω0##=\frac{v_0}{2R}## in counter clockwise direction. Find time after which pure rolling starts. Homework Equations For pure rolling...
  8. M

    MHB Need help writing a pure math formula

    Hello, I am really struggling to write a math formula that I need for my website plugin. A=(Length) B=(Width) C=(Square Inch) A*B=C 0<=C<=16 then C*.84 17<=C<=34 then C*.70 35<=C<=65 then C*.56 66<=C<=99 then C*.42 100<=C<=150 then C*.35 151<=C<=500 then C*.31 I wrote this formula in excel...
  9. Soumalya

    Psychrometrics - Pure Humidification Process

    In psychrometrics it is outlined time and again that we cannot achieve a pure humidification process i.e, add only moisture to unsaturated air without a change in its Dry Bulb Temperature(DBT).While pondering over the idea I came up with a possible way of doing it (if it is correct at all) and...
  10. kade

    As a pure math phd student, how to get into the quantum research

    As a fresh pure math phd student, I aim to become a mathematical physicist, and currently I try to schedule out what I should do step by step in this four years on phd program. But in my university, there is no professor in this field could help me as my advisor. So I wish to get some advice...
  11. B0b-A

    Can Pure Water Fluoresce Under UV Light?

    Can pure* water be made to fluoresce if illuminated by some particular frequency of Ultra-Violet light ? [* No chemicals added ]
  12. M

    Compression of pure nitrogen: Calculating power and temperature

    I am trying to find the theoretical power required to compress nitrogen from a pressure P1 to P2, as well as the final temperature T2 after compression. I found no formula that were anywhere near complete, but I found this tool, which tells me that from 300K@1Bar, I need 271.4kw (271kj/s) to...
  13. B

    Advice for a potential career in Pure mathematics

    I use to hate math during high school. However some eight years after graduating and being in the military help with my attitude towards math. I am reviewing a GRE math review book and I haven't been able to put it down. I just learned quadriatic equations and am pursuing into intermediate...
  14. Naeem Anwar

    Production of Pure QED Atom

    Studying the production of the bound state of ##μ^+μ^- ## in the scattering experiments of ##e^+e^-## at electron positron colliders ##e^+e^-\toμ^+μ^- ## via ##e^+e^-\to 2γ\toμ^+μ^- ##. This bound state further can decay into ##e^+e^-## or ##2γ##. I am confused about the vertex ## 2γ\toμ^+μ^-...
  15. H

    Why can we assume dielectric induced dipoles are pure dipoles?

    Homework Statement Griffiths was trying to prove that when calculating the electric field inside a dielectric, we may assume the dipoles induced in it are "pure" dipoles, although they are in fact "physical" dipoles, as long as we view the field as a macroscopic field, one that is averaged over...
  16. heff001

    Pure Mathematics study - question

    I am planning to study the following pure mathematics areas (on my own) and wanted to know if this is the best sequence: 1- Formal Logic 2 -Philosophical Logic 3- Sentential Logic 4- Predicate Logic 5- Symbolic Logic 6 -Set Theory 7 -Pure Mathematics (Intro, Pure Math I and II and Hardy) -...
  17. A

    DePauls M.S in Pure Mathematics

    I was just wondering what people thought about this program. I know a couple of kids who are graduating with their M.S. in pure math from DePaul and they are going to university of Oregon and Toronto for the phd's.
  18. Damian Norton

    Programs How many hours, on average, of pure learning for bachelor degree?

    Hello. I am in desperate need for advice. I have searched for advice everywhere and each time failed to obtain it. This is my last resort. Please help me and bare with me while I explain the problem. I am 28 years old guy. I have literally whole day free to pursue whatever goals I see fit...
  19. AdityaDev

    Pure rolling with zero friction

    when a sphere starts moving with initial velocity ##v_0## and zero angular velocity in a plane surface having friction, then first it will start rotating till it starts pure rolling. that is, its velocity of centre of mass will decrease due to backward friction and angular velocity will increase...
  20. M

    Proofing My "Arithmetic?" Proof

    This is a self-assigned question. Not homework. I may have the right answer, but would like some reviewing. It came to me while reading on a CS topic, this did not come from a math textbook, otherwise it would be slightly more in context. I did not use any formula (so 2 would be empty) and 1...
  21. Larry Pendarvis

    Is it possible to distinguish between pure and mixed states?

    Is it possible, in principle, for an experiment to distinguish between an ensemble of pure states and an ensemble of mixed states? If so, how? In particular, I am thinking of an ensemble of particles whose spin has been measured, one at a time, on the "Vertical" axis. The ensemble consists of...
  22. R

    How difficult is Topology for a pure Physics student?

    Hi, I'm hoping someone here can shed some light, I'm currently in my 3rd year of my Physics degree and have discovered I really don't have the mind to memorise / reproduce paragraphs of text. Even if I understand the concepts it takes me a LONG time for my brain to take text in. Maths however I...
  23. J

    Would a pure diamond drill bit ever get dull?

    If a drill bit that was cut out of a single large diamond were made, would it last forever, assuming it was never used to drill through diamond and was never exposed to a laser? Would it ever get dull or break?
  24. Y

    Is evaporation a pure diffusion process?

    Hey, I have a question for evaporation--What is the real driving reason for evaporation? I usually believe that it is a pure diffusion process: the saturated pressure of liquid at the liquid vapor interface is higher than the partial pressure of vapor in the ambient, and this pressure difference...
  25. A

    Finding Pure Bending Moment for Simply Supported Beam

    i am trying to find the pure bending moment of this beam 1. Homework Statement simply supported solid beam 3m long W=100mm D=200mm with a UDL of 2tonnes/m and a point load in the centre of 200N Homework Equations is the pure bending moment at the peak of the bending moment diagram i have...
  26. N

    Determine if System State is Pure or Mixed?

    The short question: For the current state of a given system, is there a way to determine whether the state is pure or mixed? Of course, one can take as many ensembles as you need, do as many experiments as you need, and determine where the state sits in the entire state space. However, I find...
  27. Q

    The Stefan-Boltzmann Law on Pure Proton Plasma

    Hi guys. I had a question concerning a pure proton plasma with a given temperature and its loss of energy due to the Stefan-Boltzmann law. From my understanding, the Stefan-Boltzmann law applies to objects that contain electrons. I don't think that's true but I would like to know if it is. If...
  28. PolywellGuy

    The Spectrum for a pure electron plasma

    Hello All, In this recent Navy publication, a team of researchers said they have discovered cusp confinement. This could be a major step towards fusion power. I am working on a write up of this publication. I am trying to understand their inferometry data. As far as I can tell, the...
  29. E

    The books required to become a Pure Mathematician

    Hi all, So I'm finishing my first year in college and I did Calculus(based on Stewart). However, I don't feel I learned a lot during this year. There were not many proofs, the only proofs I studied was induction and contradiction(and some proofs in Stewart). I honestly do not like the book at...
  30. R

    Precession of relativistic orbit in pure inverse-square force

    PROBLEM: Show that Special Relativity predicts a precession of π(GMm/cl)2 radians per orbit for any elliptic orbit under a pure inverse-square force. where G is gravitational constant, M is mass of larger body, m is mass of smaller orbiting body, c is speed of light and l is angular momentum...
  31. Z

    Is it accurate to say 99% of the universe is pure black with no sound?

    Considering the majority of the universe is intergalactic space and that light gets dimmer by the inverse square law. If you pick a random place in the universe you are going to see no light (Light that's bright enough for the eye) and hear no sound. Is this accurate to say?
  32. L

    Tailoring Pure Math Ph.D experience for jobs outside of academia after

    Hey guys! Let me throw in who I am before I introduce my question. I finished my year of graduate school last May, figured out an advisor and a field (something related with Brownian motion on manifolds), and I'm overall happy with it all. No plans of dropping out, I enjoy the company of my...
  33. M

    Should not all substances boil in pure vacuum?

    It is well known that when the vapor pressure of a substance is bigger than the external pressure, it boils. In vacuum there are no particles and therefore no pressure, shouldn't therefore, even diamond as for example, boil in complete vacuum?
  34. Q

    Making the right decision Pure Math

    Hi guys I'm here to ask the age-old question, namely, I am thinking of transferring from my highly ranked university where I finished my first year in an Engineering Physics type program to the university in my hometown where I want to study Pure Math (it is too late to transfer faculties at my...
  35. M

    Unsure how dedicated I am to pure physics

    I'm a third year physics student and I can't decide between computational-based physics and plain physics. I've taken a few programming courses and have been programming as a hobby since I was around 12. I originally wanted to do a lot of math and physics to apply it to programming for graphics...
  36. B

    Studying pure physics or astrophysics for cosmology graduate study

    Hi there, I need to choose my major in a week and it's between physics or astrophysics. Most of the courses are the same except a few: The different courses: Physics: statistical mechanics, solid state physics, and nuclear and particle physics Astrophysics: Intro to astro...
  37. Prashasti

    Species, concept of pure and impure breeds.

    The definition of species is "a group of organisms that can interbreed with each other". So, how is interbreeding of two dogs of different species, say a german shepherd and a pitbull, possible? And the concept of a "pure" and "impure" breed - how will you explain it? As according to the...
  38. S

    Pure state, mixed state and measurement

    Hello guys, Homework Statement the problem goes as follows: "Which measurement should you do on a statistical ensemble of qubits in order to distinguish between the pure state |Ψ>= cos(θ)|0> + sin(θ)|1> and the mixed state ρ=cos^2(θ)|0><0| + sin^2(θ)|1><1| " Homework Equations I am not...
  39. T

    Importance of pure math books for aspiring physicists

    Hi everybody! I was wondering how much importance there is in studying pure math, for the budding theoretical physicist? mathematical physicist? Also I was wondering whether a mathematical physicist would work more on mathematical methods that physicists can use or do work like Einstein...
  40. M

    Unitary transformation of pure states to other pure states

    Is it true that there always exist a unitary matrix that can take a state vector of an arbitrary pure state to another arbitrary pure state ? (of course assuming same hilbert space). If true, how do we prove it ? it look like it is true via geometrical arguments but i have not been able to...
  41. shezi1995

    A career in Nanotechnology via pure sciences

    I have been offered admission by St Johns College Cambridge University for Natural science. In the first year I have to choose 3 experimental sciences along with maths. My options are physics, chem, materials science, computer science and some biological options. I am looking into a career in...
  42. S

    Spectrum of careers for Pure Mathematics?

    Hello, I've just been accepted and will begin as an undergraduate in physics this fall. I'm planning on taking classes, in addition to the required courses, concentrated in particle physics, QM, field theory, etc. Also, I took courses on Set Theory and Topology, and fell in love with what I...
  43. DHF

    Question on hypothetical pure O2 atmosphere

    Hello, Due to all the buzz by Mars One, my friend and I have been discussing hypothetical possibilities for long term colonization of Mars. He suggests the only long term solution is to extract O2 from the Ice on Mars and give the planet a breathable atmosphere. he did the math and calculated...
  44. Soumalya

    Heating a pure substance at it's triple point

    Suppose we heat a pure substance in solid phase at a constant pressure corresponding to it's triple point data up to it's triple point temperature where all the three phases of the substance are known to exist in equilibrium. Will further addition of heat at the same pressure result in...
  45. H

    Theoretical physics and pure maths careers

    Hello, 1. I am puzzled about which to be : theoretical physicist or pure mathematician ! what should i do ? 2. If i decided to be a theoretical physicist : should i study some pure maths to make new theory in physics ? Like general relativity : the maths used on it was before it a pure maths...
  46. T

    Extracting a fourier series of pure tones from a signal

    I believe this is an error minimization problem so I am trying to solve the following equation Min((∑ ( (S(t) - A cos(b t + C)))^2 ) Where S(t) is the input signal, t is time and I will sum over t, A is the amplitude, b is radians per second (frequency), and C is the phase angle. I...
  47. C

    MHB Could someone recommend me pure math linear algebra book?

    this probably is a wrong section but i did not know where else to put it (feel free to move it to where it belongs). that said could someone recommend me a pure math linear algebra book? preferably with LOTS and LOTS of examples! i think i have decent grasp of the basic theory but i have been...
  48. P

    Torque required to keep a body in pure translation as it accelerates

    Hello All, I've been searching for days to try and solve this but I'm going round in circles so thought I'd fire it out to into the ether! I'm analysing a gantry system that is essentially cantilevered from one end but the part of the problem I'm struggling with can be simplified thus...
  49. G

    Force on a pure oxygen bubble in air by a magnet

    There are the famous experiments, which show, how an Oxygen soap bubble gets attracted by a magnet due to it's paramagnetism. And how a Nitrogen bubble gets repelled by it (in air)But how does one calculate the attraction force of this pure Oxygen soap bubble in air due to a magnet. I'm Sorry...
  50. chimath35

    After calculus first pure math course, having a hard time.

    I just started number theory, and I feel completely lost. I never did proofs in calc. I am used to watching the professor do examples, then with solutions manual at home see how the problems are done and use the manual if I get stuck. This book on NT has no homework problems or solutions. I just...
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