Strange Definition and 588 Threads

Baron Strange is a title that has been created several times in the Peerage of England. Two creations, one in 1295 and another in 1326, had only one holder each, upon the death of whom they became extinct. Two of the creations, that of 1299 and that of 1628, are extant. All four baronies of Strange have been created by writ, which means that they can pass through both male and female lines.
Following the passing of the Peerage Act 1963, Elizabeth Frances Philipps, 14th Baroness Strange of the 1299 creation, became the first woman to take her seat in the House of Lords by virtue of an hereditary peerage.

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  1. E

    THE STRANGE THEORY OF LIGHT AND MATTER and uncertainty principle

    "THE STRANGE THEORY OF LIGHT AND MATTER " and uncertainty principle In Feynman's QED: THE STRANGE THEORY OF LIGHT AND MATTER it is used one elementary QM formula W=h\nu. But it is not described principle of uncertainty, which is the second most important formula. Do you have any idea, how to...
  2. M

    Is this indefinite integral really unsolvable?

    Hey, all. Anyway, browsing the Internet a bit I found this integral: \int \sqrt{1 + \frac{\ln x}{x}}dx as a proposed problem in a compilation of maths problems, as an integral from the MATYC journal. I gave it to Mathematica and WolframAlpha and they weren't able to solve it...
  3. E

    Why Does My Tap Water Turn Cloudy and Gritty After Running Clear?

    (Maybe this is the wrong forum; Whatever, it's an unexplained phenomenon to me.) They're always messing with the plumbing in my dorm. After the last time, the water started behaving strangely when they turned it back on. When I run the water into a glass, it comes out clear. It then...
  4. E

    Strange Motor Wiring: 6 Motors, 200HP, 380V 50Hz

    hey guys... i have 6 motors at work, 380V, 50Hz, 200 HP. the terminals are labeled 1,2,3,7,8 and 9. continuity test showed that 1,2,3 are connected together, and 7,8,9 are connected together. how is that possible ?? am i missing something ?? note that that is the case in all 6 motors. thx
  5. K

    Racquetball's strange bouncing patterns

    I play racquetball quite a bit as a hobby and competitively. One thing that I have noticed, and has baffled me for some time, is that on the sidewalls of a racquetball court, the ball's angle of incidence does not equal it's angle of reflection. It instead tends to (after repeated bounces)...
  6. naima

    Could anyone derive an assertion found in light and matter, a strange theory ?

    Could anyone derive an assertion found in "light and matter, a strange theory"? Feynman writes in his book that the propagator of the Klein Gordon photon is proportional to 1/(r2 - t2) Have you ever read the proof?
  7. K

    Solve Strange Integral of (sinx)^2/x^2 from -inf to inf

    integral of (sinx)^2 / (x^2) from -infinity to infinity. how to tackle this
  8. Andre

    Mystery of Strange Orchid Flower I Found at My Window Sill

    I took this picture at my window sill This orchid plant normally produces flowers with all white petals, like the flower in the back. However this one is clearly deviating with those green marks. Is that normal or strange? Anybody who can shed some light on this?
  9. R

    Explaining a Strange Phenomenon: EM Field & PC Fan

    Hello. I need an explanation for a strange phenomenon ... I use a fan (PC type) powered by mains (220 V / 50 Hz in my country). At a distance of about 3', I get a sin EM field (sure it is not by mains cords) at a stable frequency of 200 Hz synchronized on main frequency. Even during power on...
  10. C

    Fortran Strange results using dgesv (lapack) via fortran 90

    Hello all, I am trying to learn fortran 90 by rewriting some simple MATLAB codes I have in fortran. I tried to rewrite a linear, 1D finite element code for an elliptic equation and my fortran and MATLAB codes both end up assembling the same system matrixes (K and f), but the solution to...
  11. S

    Strange and non strange current

    Can anyone explain the meaning of strange and non strange current.i'm confused about the definition
  12. A

    Strange Sequence | Convergent and Divergent Limits Explained

    Homework Statement Find sequence (a_n) s.t. \lim_{N\rightarrow \infty} \sum_{n=1}^{2N} a_n and \lim_{N\rightarrow \infty} \sum_{n=1}^{2N+1} a_n both converge but \sum_{n=1}^{\infty} a_n diverges. I have no idea where to start to be honest. I'm confused at how this is possible. Isn't it always...
  13. L

    Solving Strange Derivative: Find (df/dt)(0)

    I'm given these functions: f(x,y)=x^{3}y ye^{y}=t x^{3}+tx=8 I need to find (df/dt)(0) I have no clue how to go about this. I can't isolate any of the variables. I tried making an implicit function out of equations two and three, but that didn't lead anywhere useful. I'm stumped.
  14. D

    Strange Laptop Smoke: Troubleshooting Acer Aspire 5536

    strange laptop smoke :( Ive got an acer aspire 5536 laptop never had a problem with it, a couple of days ago my partner turned the laptop on and saw smoke coming from where the charger was plugged in so she unplugged it turned it off and shouted me, so i plug the charger back in and the power...
  15. P

    Very strange question for derivative

    Homework Statement The question in it's complete wording: Consider the following curve. y = 8 + 5x2 - 2x3. Find the slope of the tangent to the curve at the point where x = a.Homework Equations (y2-y1)/(x2-x1) where x2=x1+dx and the limit of dx is approaching zero and y2=f(x+dx). The...
  16. S

    Something strange about new york city subways

    I've always noticed something strange about new york city subways. When they start to slow down, you feel a force pushing you forward, which seems fine. However, the subway car actually stops, you feel a jerk backward at that moment. Is there an explanation for this?
  17. G

    Linear Differential Equation in Strange Form

    Homework Statement ydx - 4(x + y^6)dy = 0 Homework Equations Need to get into the form of dy/dx + f(x)y = G(x) (Standard Form) The Attempt at a Solution ydx = 4(x + y^6)dy y = 4(x + y^6) dy/dx y/4(x + y^6) = dy/dx then I don't know how to get it in the Standard form...
  18. L

    Is the Change of Variables in this Integral Well Defined?

    Hi, I'm reading an article where an integral of the form: \int^{\infty}_{-\infty}\,\mathrm{d}\tau' \int^{\infty}_{-\infty}\,\mathrm{d}\tau''... The author then splits this into the region whereby \tau' >\tau'' , and the region \tau''>\tau' ...
  19. L

    Block on Plane with Friction in strange coordinate system

    Homework Statement A block of mass m slides down a plane inclined at an angle theta with initial velocity v down the slope and with friction coefficient mu. Find T, the time in which the block comes to a rest due to friction. Use coordinates with y vertical and x horizontal. Homework Equations...
  20. Mueiz

    Strange character of space-time

    Suppose we are looking from an inertial frame at two events in a region of space-time. The first event A (0,0,0,0) is the orign of our frame. The second event is B(10,10,5,15/c) where the 4th corrordinate is time and c is the speed of light. Then the total interval between the to event is ...
  21. J

    Proving integrability of a strange function

    Homework Statement Hi guys. I'm really struggling with this problem. Any help is welcomed. Suppose I have a function f(y) = \intg(x)/(x^2) on the set [(y/2)^(1/2), \infty]. g(x) is known to be integrable over all of R. I want to show that f is integrable over [0,\infty], and that the...
  22. M

    Strange Gearbox: Old Factory Maintenance Engineer Needs Help

    hello everyone i am a maintenance engineer in old factory so while we were working on an old machine yesterday we found a very strange gear box like the harmonic drives but it transmitts the motion from the motor shaft by a key to bearings those bearings transmitts motion to a elliptic shaped...
  23. S

    QED: the strange theory of light and matter. Light is made of particles ?

    QED: the strange theory of light and matter. " Light is made of particles " ? Over Christmas I ordered the book: QED: The strange theory of light and matter by Richard P feynamn 2006 edition. Note: This book was written in 1985. "We know that light is made of particles because we can't...
  24. P

    Value of a strange continued fraction

    Howdy! Question - What is the value of the continued fraction: 1 + 1/(2 + 1/(3 + 1/(4 + ... The continued fraction can also be written: [1; 2,3,4,...] Is there a general method for solving continued fractions with patterns like this? I tried using the recursive formula for the nth...
  25. S

    Exploring the Strange Result of Equation 8.9 in Quantum Field Theory

    Dear all, I am taking 'field theory' course this semster and I am reading 'quantum field theory' by mandl and shaw. In chapter 8, equation (8.9) we see: E_1 E_2 v_rel=〖[(p_1 p_2 )^2-m_1^2 m_2^2]〗^(1/2) and we know that as p is a four vector: p=(E,P)=m so p_1 p_2 = m_1 m_2 ! Isn't...
  26. nukeman

    Strange question about drugs/vitamins and brain power

    Just to let you know, this is for something I am writing. Well, its not the main topic, just a little something I wanted to expand on. Is there any known drugs/vitamins/supplements that people take to increase their "Brain power" ? By brain power, I just mean anything from increasing...
  27. M

    Strange ice formation, gravity-defying ?

    Can anybody explain how this inverted icicle could have come to be formed ? This mug of water had been sitting outside for a few days, last night the temperature in Edinburgh dropped to below zero, and this morning I saw that this ice stalagmite had formed. There was no source of dripping...
  28. T

    Greatest Common Divisor in a strange extension ring.

    Homework Statement I need to show that two elements in \textbf{Z}[\sqrt{-5}] have gcd = 1. The elements are 3 and 2+\sqrt{-5} Homework Equations The Attempt at a Solution My way of thinking was if I can show that both elements are irreducible, then they are both prime and hence...
  29. C

    Strange result in lab possibly electrochem related?

    Homework Statement In a recent lab (our labs are very open ended) my group decided to make 5 different concentrations of CuSO4. We measured out between .5 g and 10 g of solid CuSO4 (the pentahydrate kind) into 100mL of water each, dropped a .35 piece of heavy copper foil into each (about...
  30. Q

    The strange world of Phil the photon

    First, a short story to illustrate a philosophical issue I have not seen discussed let alone resolved: Mac was about to press the 'On' button of his super-duper special microwave oven with perfectly reflecting interior walls. Inside, a random jumble of thermal photons, comprising a 'photon...
  31. M

    Strange question, but is time and actual thing ?

    Strange question, but is "time" and actual "thing"? I was thinking about this today in my Physics class. Is "time" an actual "thing" ? Or just the movement of the hands on a clock? Please give me your opinion (: -Mally
  32. P

    What are the bounds for this strange triple integral over the region E?

    Homework Statement {\int}{\int}{\int}ydV over the region E, where E is bounded by x=0, y=0, z=0, and 2x+2y+z=4 Homework Equations n/a The Attempt at a Solution Assuming that x and y must both be positive, which the boundary conditions seem to require, then the most either one can...
  33. J

    Strange maxwell boltzmann statistics, what is it actually?

    Originally, it is derived from the weight of a confuguration,i.e. how electrons are distributied in different energy level:n=gexp(a+be) It gives the number of electrons in each energy level.However suddenly it can be apply to a cloud of gas?? By dividing a box of gas into different energy and...
  34. C

    Integrating a strange square root function

    Homework Statement Calculate the area under the curve for the following: f(x) = √x*√(−32 − x) and g(x) = √(−x2 − 32x) Homework Equations The Attempt at a Solution I've been trying to do partial integration since the functions f(x)=g(x)area are mirrored, so they are equal...
  35. R

    Proving Summation of Consecutive Integers Greater Than 61 on a Circular Disk

    Homework Statement The integers 1 thru 40 are painted on the outside rim of a circular disk, in “random” order. Prove that some consecutive set of three integers must have a sum that is greater than 61. Hint: this question is not about induction, but about summations of...
  36. L

    Strange Result of Error Calculation

    Homework Statement We conducted an experiment on the bending of X-Rays in crystals and determined the K_{\alpha},K_{\beta} lines of the first order and the corresponding wavelenghts of the radiation by means of the Bragg equation. We used a NaCl crystal with a d=283 pm. We determined the error...
  37. M

    Are There Other Strange Division Patterns Besides Cancelling 6's?

    Homework Statement how come that 16/64=.25 166/664=.25 1666/6664=.25 and any 1then n number of sixes / the same number of sixes then 4 = .25 same thing with 19 / 95 is there other strange division patterns?
  38. J

    Strange Optics Ques: photon capture and reprod

    Strange Optics Question: photon capture and reproduction Imagine that you are sitting in your room staring out your window at a tree branch and a single leaf about to blow off. Suddenly someone comes up to you and says "You know that window, that's no ordinary window, it is actually a black...
  39. BobG

    News Bizarre Iowa Supreme Court Campaign Ad | #1 in Strange Political Ads

    This ad hoping to unseat a judge from the Iowa Supreme Court has to be the early #1 in bizarre campaing ads. https://www.youtube.com/watch?v=Mj2gOLUw5yk
  40. B

    Very strange permutation problem

    Homework Statement ~ Homework Equations product of permutation The Attempt at a Solution i have difficulty understanding this q. why in \sigma there are b1b2...bn new element? why can i insert \tau in the permutation "matrix"?\tauitself is a "matrix"??
  41. P

    Fortran Debugging Strange Fortran Code: A Simple Delta Function

    Hi guys, I just wrote a simple code for delta function and print it out. Here it is. program main implicit none integer i real*8 del real*8,parameter:: ep=1D-2 real*8,parameter:: pi=3.1415926 do i=-10,10,1 write(*,*)...
  42. R

    Mystery Solved - Strange Phenomenon on PCB

    Hello, I just watched at a strange phenomenon. One of my PCB's (Cmos+TTL) is connected to my PC through a Centronics port. No power supply is provided by this wire (only data in and stobe signals). With main power supply off and filtering caps empty, this board runs perfectly during hours and...
  43. F

    Strange wikipedia entry about the sun's core

    This entry on the voice "SUN" in wikipedia is correct? How can this can be possible? And if this entry is true how can be possible to create a small fusion reactor on the Earth? the entry is: The energy production per unit time (power) produced by fusion in the core varies with distance from...
  44. M

    Very strange about the zero degree polynomial

    Hi everybody f(x) = aX0 is the form of any constant polynomial... right?? eg: f(x) = 3 is actually f(x) =3X0 where X belongs to R... ok?? since 00 is an unspecified quantity.. therefore on graphing a constant.. it should exists a hole on y-axis... and the y-intercept should not satisfy...
  45. J

    Strange Police Behavior: Insight Needed

    I hope you guys can give me some insight into this situation. So, I was driving home from my parents' house tonight (just past midnight on Monday night) and I'm nearly the only person on the highway. A two state troopers pass me one by one within a 2 minute (2 mile, traveling 60 mph) span...
  46. S

    Solving a very strange improper integral

    Homework Statement I am getting fooled by the this improper integral \int_0^{\infty}\frac{cos(x)+sin(x)}{1+v^2}dv = \pi \cdot e^{-x} How the devil do I go about getting that result? The Attempt at a Solution I end up getting the sum of the two integrals...
  47. BobG

    Are You Paying More for Dangerous Instructions in Your Book?

    Two books, same title, same subject, same author. Two radically different prices: https://www.amazon.com/dp/0764574086/?tag=pfamazon01-20 https://www.amazon.com/dp/0764554964/?tag=pfamazon01-20 The new edition is 16 pages shorter. What are the odds of a book being shortened by...
  48. C

    Strange white flash in a dark room - II

    My wife and I are currently staying in a holiday apartment in France and a couple of days ago we think we started seeing the same white flashes in our baby's room at night. We know there's no possibility of external light sources as our baby's room is completely blacked out at night with...
  49. J

    Found baby snakes in some strange places

    I remember when I was a kid I used to bury mango seeds in the garden. After some days when I was digging that seedling out so that I can gift it to some of my friends, or transfer it some other place. I would find a baby snake inside the ruptured mango seed - it happened about three or four...
  50. Z

    Strange Observation of Ink in Ball Point Pen

    I observed something odd this evening. When I inverted my ball point pen (writing side upwards-perpendicular to the ground level), there was no change in the level of ink. To my surprise, the ink started coming downwards (towards the open end of the refill) when I wrote with it ( inverted ) on...
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