What is Transverse: Definition and 308 Discussions

Transverse myelitis (TM) is a rare neurological condition in which the spinal cord is inflamed. Transverse implies that the inflammation extends horizontally across the spinal cord. Partial transverse myelitis and partial myelitis are terms sometimes used to specify inflammation that only affects part of the width of the spinal cord. TM is characterized by weakness and numbness of the limbs, deficits in sensation and motor skills, dysfunctional urethral and anal sphincter activities, and dysfunction of the autonomic nervous system that can lead to episodes of high blood pressure. Signs and symptoms vary according to the affected level of the spinal cord. The underlying cause of TM is unknown. The spinal cord inflammation seen in TM has been associated with various infections, immune system disorders, or damage to nerve fibers, by loss of myelin. As opposed to leukomyelitis which affects only the white matter, it affects the entire cross-section of the spinal cord. Decreased electrical conductivity in the nervous system can result.

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  1. Nemo's

    Speed of a transverse wave in srting

    Homework Statement A 2 kg block hangs from a rubber cord, being supported so that the cord is not stretched. The unstretched length of the cord is 0.5m, and its mass is 5 g. The "spring constant" for the cord is 100N/m. The block is released and stops momentarily at the lowest point. a-...
  2. TheFerruccio

    Buckling Load of Simply Supported Beam + Midpoint Transverse Spring

    Alright, I took a while setting this problem up for you guys, because I am absolutely stumped and have hit a brick wall and have nowhere else to turn for assistance. Please excuse the shoddy diagram. I made it from scratch to try to illustrate the problem better. Homework Statement Find the...
  3. jerry0696

    Is sound wave a transverse wave?

    i had always belived that sound wave was a longitudinal wave till i come across something saying that its a transverse wave in solid.can anyone explain is it so??
  4. A

    Find Maximum Transverse velocity of string

    Homework Statement For a string of length 100m with fixed ends, a pulse is traveling to the right at a speed of 40 m/sec. The pulse has a wavelength of 2 meters and an amplitude of .1 m. Homework Equations y=A*Sin(kx-wt) ((where w is omega)) \lambda=2*pi/k frequency=w/2pi...
  5. F

    Relativistic transverse doppler shift

    Hi, I was looking up the formula for this on wikipedia and it said that the frequency shift is: \frac{\sqrt{1 - v^2/c^2}}{1+\frac{v}{c}\cos{\theta}} In the case where the the emitter is directly above the observer when the photon arrives it says it simplifies to: \gamma =...
  6. A

    Wave Pulse - Finding Average Transverse Acceleration of Segment

    Homework Statement A traveling wave pulse is shown in figure 1 below, traveling at v=6 m/s across a string. In figure 2, a short segment of the string is shown zoomed in. The angle of this string goes from θ1 = 17o to zero within a small horizontal distance Δx = 3 mm. Homework...
  7. N

    The velocity of transverse waves on a string

    1. A violin string is 35 cm long between its fixed ends and has a mass of 2.0g. The string sounds the note A4 (440 Hz) when played. Homework Equations v=\sqrt{}F/ρ The Attempt at a Solution I calculated ρ, mass per unit length, to be .0057 kg/m but do not know how to find the...
  8. O

    Mechanics~polar coordinate & radial and transverse component

    http://www.answers.com/topic/radial-and-transverse-components From the above link, 1) e θ is a unit vector perpendicular to r in the direction of increasing θ. Where is the direction of increasing θ? Is that a circle? θ Increase from 0 to 2∏.then eθ moves in a circle? direction always...
  9. W

    Two Transverse Sinusoidal waves combine in a medium

    Homework Statement Two Transverse Sinusoidal waves combine in a medium are described by the wave functions: y1 = 3sin∏(x + 0.600t) y2 = 3sin∏(x - 0.600t) what is y1 + y2? Homework Equations the hint is that I am supposed to use: sin(α + β) = sin(α)cos(β) + cos(α)sin(β) The Attempt at a...
  10. P

    Deriving decomposition of transverse acceleration

    Homework Statement The question asks one to derive the acceleration vector, $$\vec{a} = [\frac{d^2r}{dt^2} - r(\frac{d\Theta}{dt})^2]\vec{u}_r + [\frac{1}{r}\frac{d}{dt}(r^2\frac{d\Theta }{dt})]\vec{u}_\Theta$$ from the velocity vector. $$\vec{v} = \vec{u}_r\frac{dr}{dt} +...
  11. D

    How do transverse waves propagate through a string?

    Hi, Can anybody explain how by giving an vertical impulse to a string you can cause a transverse wave. What is confusing me is that you just give the string an impulse upwards, where does the energy transferr horizontally come from? By picturing that all the Points of the strings are connected...
  12. G

    Conflicting Transverse Doppler Shift Equations?

    http://en.wikipedia.org/wiki/List_of_relativistic_equations#Doppler_shift and http://www.physics.umanitoba.ca/~souther/waves02/feb0402/sld011.htm If you look at the derivation on Wikipedia: v' = γv But the one on Uni of Manitoba shows: f' = f0(1-β^2)^(1/2) or f' = f/γ...
  13. Saxby

    Wave function at origin on transverse wave

    Homework Statement You have the simple harmonic equation for a transverse wave which is y(x,t)=Acos(10∏t+5x), what is the wave function at the originThe Attempt at a Solution By "at the origin" does it mean where x=0 and t=0. Because it that case y=Acos0 and therefore y=A. Is that right?
  14. Saxby

    Why Do Wave Equations Use Sinθ and Cosθ Interchangeably?

    Why do some wave equations use sinθ and others cosθ? Does it make a difference when calculating properties such as wavelength and wave number? For example: y(x,t) = Asin(ωt+kx) y(x,t) = Acos(ωt+kx)
  15. C

    Transverse Wave equation for a string of changing length?

    I'm trying to learn more about the physics of guitars. I followed through the derivation of the transverse wave equation and that makes sense, but it seems like several of the simplifying assumptions might not apply. There are a lot of approximations with small angles and small slopes. I...
  16. A

    Transverse Wave in a String Reflection and Transmission

    A string with a density/length of rho and tension T has an elastic spring with stiffness k at x=0. There is a step pulse (fi = H(t)) incident on this discontinuity. Determine the reflected and transmitted waves. Im not sure what boundary condition to use at the location of the spring. All...
  17. A

    Radial and Transverse Acceleration

    Homework Statement Three stock car drivers are racing around a circular bend. They are each circling the bend at different radii: r1=249 m, r2=255 m, and r3=261 m. At a given instant, all three are traveling at the same transverse rate of rotation...
  18. P

    Finding the total vertical distance - transverse wave

    Homework Statement Suppose the amplitude and frequency of the transverse wave in the figure are, respectively, 5.89 cm and 5.00 Hz. Find the total vertical distance (in cm) through which the colored dot moves in 3.00 s. http://i45.tinypic.com/3007ihy.png Homework Equations y = A sin...
  19. L

    What is the equation for a transverse wave with periodic boundary conditions?

    What is [an] equation for a transverse wave with no boundary conditions, as a function of x and t? I want to model a fluctuation string where neither of the ends are bound.
  20. J

    Formula for transverse decrease in signal strength?

    Alice is transmitting an electromagnetic beam to Bob. Assume it is a well collimated beam, like a laser beam, or a maser beam. As Bob's distance from Alice increases, his signal strength decreases according to the well known inverse square law. Eve, the eavesdropper, is beside the beam, not...
  21. R

    What equations can I use to find the tension in this cable? Transverse pulse ?

    What equations can I use to find the tension in this cable?? "Transverse pulse"?? I know I'm given the following but I have no idea what equation to use...does anyone know? Mass: m = 0.180 kg Length: L = 4.20 m μ = mass (m) / unit length of cord (L) Time for 4 trips down and back: 0.845 s...
  22. S

    Diffraction Transverse Wave Confusion

    http://en.wikipedia.org/wiki/File:Doubleslit.gif As shown in the link, diffraction is shown in the form of these kind of longitudinal waves. The diffraction pattern explains the wave interference pattern observed in the double slit experiment. However in the case of the delayed choice double...
  23. H

    Calculating Amplitude of Transverse Wave

    Homework Statement The wavefunction of a transverse sinusoidal wave on a string has the form y(x,t) = Acos(kx + ωt + φ), where x and y are in m, t is in seconds and φ is the phase constant in radians. The wave has a period T = 24.5 ms and travels in the negative x direction with a speed of...
  24. N

    Find Numerical Value Of Transverse Modulus

    Homework Statement Homework Equations Square Packing: V_f = ∏/4(r/R)^2 E=σ/ε The Attempt at a Solution E=10MPa/0.001 = 1x10^4 E_2f=? V_m=? I get stuck here, am I on the right track with this problem? I need some guidance, please!
  25. S

    How are Tranverse Magnetic and Transverse Electric Polarisations defined?

    I've seen this terminology being used a few times and knowing what it means exactly would be great. I gather that it's used to define Polarisations relative to a plane? Any help would be great.
  26. R

    Velocity of Transverse Waves problem

    Homework Statement Two children are sending signals along a cord of total mass 0.54 kg tied between tin cans with a tension of 37 N. It takes the vibrations in the string 0.53 s to go from one child to the other. How far apart are the children? Express your answer using two significant...
  27. M

    Tension in a ropa to form transverse waves

    Homework Statement With what tension must a rope with length 2.20m and mass 0.100kg be stretched for transverse waves of frequency 43.0Hz to have a wavelength of 0.700m? Homework Equations No idea The Attempt at a Solution I am completely oblivious as to where to start this...
  28. Z

    What is the difference between standing waves and transverse waves?

    I always hear a difference between transverse and longitudinal waves, and, standing and traveling waves, but for me, transverse and standing waves looks very similar; and i can't seem to find out what is the difference. Both has nodes and antinodes, thus the change in amplitude as you go...
  29. C

    What are the properties of transverse waves?

    Ok, so the wavelength is the length between two crests. Is it also the length of a complete wave? (sorry if I sound really stupid) The period is the time taken for one particle that makes up the wave to complete its oscillation, and it is also the time taken to make one complete wave. But I...
  30. P

    Speed of longitudinal wave 30 times the speed of a transverse wave?

    Homework Statement What must be the stress (F/A) in a stretched wire of a material whose Young's modulus is Y for the speed of longitudinal waves to equal 30 times the speed of transverse waves? Homework Equations Y=\frac{Fl_0}{Al} v_L=f\lambda = \sqrt{F/\mu} v_T = \omega A...
  31. 3

    Transverse waves on pulley - question

    Homework Statement 1) an aluminium wire, of length L1 = 60.0 cm, cross sectional area 1.00 x 10^-2 cm^2, and density 2.60 g/cm^3, is joined to a steel wire of length L2, of density 7.80 g/cm^3 and the same cross sectional area. The compound wire, loaded with a block of mass m = 10.0 kg, is...
  32. Biosyn

    Solving Part 6(c): Speed of Transverse Waves on String

    Homework Statement Problem is part 6 (c) on page 9 of pdf file. lodischool.tripod.com/dovesol/DOVE98SOL.pdf Google quick view...
  33. J

    Potential energy of a spring and transverse motion

    Homework Statement L = Stretched distance L0 = Unstretched distance Homework Equations W = 1/2kL2 The Attempt at a Solution In attempting to help a friend with this problem, having taken this same physics class under a different professor, i was completely stumped by this...
  34. G

    Difference between longitudinal and transverse refractive indices

    hi All, as the title suggests, I a not so clear on the difference between the two. in particular in solids, I have been looking at various approached to calculating the refractive index. But I´m not so clear on why there is two descriptions of we have a homogeneous medium. thnks!
  35. C

    Transverse harmonic wave Equation

    Homework Statement A transverse harmonic wave travels on a rope according to the following expression: y(x,t) = 0.18sin(2.2x + 17.1t) The mass density of the rope is μ = 0.146 kg/m. x and y are measured in meters and t in seconds. Homework Equations I do not know what to use...
  36. B

    Is light wave also transverse in media?

    It is no doubt that light is a transverse wave in vaccum. But is it also holds true for the case when light is in a medium?
  37. T

    How Do You Calculate the Period of a Transverse Wave on a Flexible String?

    Transverse Wave on Flexible String! Please help. [b]1. The diagram represents a snapshot of a standing transverse wave on a flexible string taken when the displacement is at a maximum. The string is 0.65 m long with tension 11.00 N. The total mass of the string is 8.11 g. Find the period of the...
  38. maverick280857

    Transverse Susceptibility, and doubts about retarded/advanced Green's Functions

    Hi, I have been working through lecture notes of a condensed matter field theory class, and unfortunately I haven't found references for some of the specialized calculations though the way they're done makes them seem common knowledge in the cond-mat community. I have started this thread...
  39. J

    Radial and Transverse Forces Beer and Johnston 9th ed. 12.70

    Homework Statement The 3 kg collar B slides on the frictionless arm AA'. The arm is attached to drum D and rotates about O in a horizontal plane at the rate dθ/dt = 0.75t, where dθ/dt and t are expressed in rad/s and seconds, respectively. As the arm-drum assembly rotates, a mechanism within...
  40. Q

    How Do You Calculate Wave Parameters for a Transverse Sinusoidal Wave?

    Homework Statement A transverse sinusoidal wave is moving along a string in the positive direction of an x-axis with a speed of 80 m/s. At t = 0, the string particle at x = 0 has a transverse displacement of 4.2 cm from its equilibrium position and is not moving. The maximum transverse speed...
  41. Spinnor

    Why are electromagnetic waves transverse waves? Is this answer ok?

    From: http://answers.yahoo.com/question/index?qid=20090223155307AAgqbWk Question: Why are electromagnetic waves transverse waves? Answer: "Because they are generated by the rapid vibration of elecrons, which go side to side, perpendicular to the direction the waves travel (very very rapid...
  42. N

    Testing Wave Properties in a School Lab: Longitudinal or Transverse?

    I have looked everywhere to find a simple, easy test to find whether a wave is longitudinal or transverse, I've read my textbook and I think it may be to do with polarisation but I am not quite sure how, or someone said that passing the wave through a vacuum would determine the type of wave. any...
  43. P

    Transverse ray-intercept fan plot

    I need help understanding the transverse ray-intercept fan plot. Please see the scanned pages of my book if anything is not clear. scanned pages on transverse ray-intercept fan plot...
  44. M

    Oscillating String - Transverse Speed, what am I doing wrong?

    A string oscillates according to the equation y´ = (0.654 cm) sin[(π/4.0 cm-1)x] cos[(24.2π s-1)t]. What are the (a) amplitude and (b) speed of the two waves (identical except for direction of travel) whose superposition gives this oscillation? (c) What is the distance between nodes? (d) What...
  45. M

    Longitudinal and transverse wave propagation

    Why do transverse waves propagate through solids , while logitudinal waves can only propagate through fluids?? I'm still confused about this
  46. S

    Mechanical Oscillator: finding frequency and wavelength of transverse wave

    A mechanical oscillator connected to the end of a stretched string creates a transverse displacement of the end that is given by ξ = 0.009 sin(22.8 t), where ξ is in meters, t is in seconds (and the argument of the sin function is in radians). The tension in the string is 11.08, and the string...
  47. S

    Propagation Velocity of Transverse Waves

    A steel wire of radius 0.65 mm is subject to a tension of 11.29 N. Steel has a volume mass density of 7800 kg/m3. Find the velocity of propagation of transverse waves on this wire, in m/s. I found the cross sectional area of the wire but I am not sure where to go from there. I know I need...
  48. J

    Torsion Shear of Shaft with Transverse Hole

    Looking to figure out the allowable stress (psi) of a shaft which has two pin holes in it on the transverse axis of the shaft. tau = allowable stress, psi T = torque, in-lb c = distance from center of gravity to extreme fiber J = polar moment of inertia D = diameter of the shaft d =...
  49. W

    Level degeneracy of the transverse ising model

    the hamiltonian is H=-J \sum_{l=1}^N \sigma_l^z \sigma_{l+1}^z+ g \sigma_l^x here we assume periodic boundary condition my problem is, what is the highest possible degeneracy of the levels? initially i expected 2 but numerically i find that it is 4 i cannot understand it
  50. S

    Power of a transverse wave related to rope length

    Homework Statement Two traveling transverse waves propagate down two long ropes under the conditions that the linear mass density, tension, and transverse displacement amplitude for the two ropes are the same, but that one rope has twice the length of the other. If the shorter rope has a...
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