1d Definition and 417 Threads

The Canon EOS-1D X is a professional digital SLR camera body by Canon Inc. It succeeded the company's previous flagship Canon EOS-1Ds Mark III and the Canon EOS-1D Mark IV. It was announced on 18 October 2011.It was released in March 2012 with a suggested retail price of US$6,799.00 (body only) and a suggested retail price of £5,299 in the United Kingdom.The camera is supplemented by the Canon EOS-1D C, a movie-oriented camera that shares most of its still photographic features with the 1D X. The 1D C was announced in April 2012 and released in March 2013.In CES (January) 2014, Canon released firmware version 2.0.3 with significant improvements:
Initial AF point selection and 61-point auto selection AF synchronization
AF point switching according to camera orientation
Improved low-light performance
Expanded minimum shutter speed in auto ISOOn 1 February 2016, Canon introduced the Canon EOS-1D X Mark II as the successor to the EOS-1D X.

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  1. -Job-

    Exploring Gravity in 1D Universe

    Suppose we live in a one dimensional universe (so just a curved/straight line in 2D space). We live inside it so we can travel in one of two directions. Then we might consider the following scenario for how gravity works in this universe. Suppose this 1D universe starts out as a nearly straight...
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    How Do I Solve Forces in Physics Problems Like 1d and 1e?

    http://img437.imageshack.us/img437/8104/untitled1wi.jpg in 1 b) i know that the 4 N goes upwards but in questions like 1 d or e, whta do i do then for 1 d 1) -mgsin30 is going down, ok and frictoin is going down, 2) -mgcos30u ok and the 8 N, is it 3) (8cos-30, 8sin-30)? if so, that's...
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    1D wave PDE with extended periodic IC

    I have formula for 1D wave equation: (*) u(x, t) = 1/2 [ f(x + ct) + f(x - ct) ] + 1 / (2c) Integral( g(s), wrt s, from x-ct to x+ct ) I am trying to find u(1/2, 3/2) when L = 1, c = 1, f(x) = 0, g(x) = x(1 - x). However, for (*) to work, the initial position f(x) and initial velocity...
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    Solving 1D Wave Equation PDE with f(x), g(x) and nL<=x<(n+1)L

    I have formula for 1D wave equation: (*) u(x, t) = 1/2 [ f(x + ct) + f(x - ct) ] + 1 / (2c) Integral( g(s), wrt s, from x-ct to x+ct ) I am trying to find u(1/2, 3/2) when L = 1, c = 1, f(x) = 0, g(x) = x(1 - x). However, for (*) to work, the initial position f(x) and initial...
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    How Does Kinematics Calculate the Trajectory of a Thrown Ball?

    Please tell me if I have done this correctly. A ball is thrown upward from the ground with an initial velocity of 10 m/s. Assume all digits are significant. a. How long before the ball reaches its maximum height? t = (0m/s - 10m/s) / -9.80m/s2 t = 1.0s b. What is the ball's maximum...
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    MATLAB 1D 2nd-Order nonlinear differential eqn using Matlab

    Hi all, I am more into physics than maths and I need you guys to please help me out. Also I am new to programming in MATLAB. I have done some but still I consider myself a novice. I need to solve the problem in MATLAB. So here is the problem.Its a 2 point BVP(boundary value problem) along...
  7. J

    MATLAB 1D 2nd-Order nonlinear differential eqn in Matlab

    Hi all, I am more into physics than maths and I need you guys to please help me out. Also I am new to programming in MATLAB. I have done some but still I consider myself a novice. I need to solve the problem in MATLAB. So here is the problem.Its a 2 point BVP(boundary value problem) along...
  8. W

    Solving 1D Kinematics Problem: Maximum Reaction Time for Avoiding Deer Collision

    A motorist is traveling at 10 meters a second when he sees a deer in the road 50m ahead. If the maximum negative acceleration of his vehicle is -7 meters per second per second, then what is the maximum reaction time delta t of the motorist that will allow him to avoid hitting the deer? I am...
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    How Can a 3D PDE Be Simplified to a 1D Equation in Theta?

    I got the following PDE: Laplasian[F]+a*d(F)/d(teta)=E*F I worked with cylindrical coordinates (r,teta,z) (teta is the angle between the x-axis and the r vector (in xy plane)) a,E are constants I got the constrains: z=0 r=a , so the whole problem is on a simple ring How can I make...
  10. J

    1D Diffusion Equations (Numerical Computing) [kind of long]

    I am doing research with a professor and he asked me to graph some solutions to a 1D diffusion equations of the following form: C_e \frac{\partial T_e}{\partial t}=\frac{\partial}{\partial z}\left( \kappa \frac{\partial T_e}{\partial z} \right) - g(T_e-T_i)+\alpha (1-R)If(t)\exp (-\alpha z)...
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    What is a value of psi* for a particle in 1D box stationary state?

    I know that psi is equal to (2/a)^1/2 sin(n pi x/a)? what is psi*?
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    Collision Prediction: Speedy Sue vs. Slow-Moving Van in a Wet Tunnel

    here is the problem.. i keep getting yes for the first part and then around 163 for the second part. please help. Speedy Sue, driving at 31.5 m/s, enters a one-lane tunnel. She then observes a slow-moving van 105 m ahead traveling in the same direction as her at 5.10 m/s. Sue applies her...
  13. B

    1D Thermo problem, something is wrong

    A startled armadillo leaps upwards so that it rises to .56 m in a time .21 s. Note: I use a web-submitting thing for my answers. So it tells me what is right and wrong. A: What was the armadillo's initial speed when it left the ground? 3.70 m/s - this part is correct. B: What is its...
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    Low Level Physics Problem 1D Motion

    47. A rock is dropped from a sea cliff and the sound of it striking the ocean is heard 3.4s later. If the speed of sound is 340 m/s, how high is the cliff? Could somebody map this one out for me, it isn't making any sense.
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    Calculating Original Speed and Acceleration in 1D Motion

    The question goes as follows: A truck covers 40.0 m in 8.50 s while smoothly slowing down to final speed +2.40 m/s. Find the original speed Find the acceleration Now, I tried a couple things for the speed, I tried 40/8.50, and I tried (4.71/2.40) and both turned out to be wrong. Not...
  16. J

    What Is the Collision Height of Two Balls with Different Initial Velocities?

    Problem 1 Ball A is dropped from the top of a building of height H at the same instant ball B is thrown vertically upward from the ground. First consider the situation where the balls are moving in opposite directions when the collide. If the speed of ball A is m times the speed of ball B...
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    How Do You Solve the 1D Wave Equation with Gravity and Nonhomogeneous Terms?

    I have a wave equation Ytt=c^2 Yxx - g where g is a constant. The boundary conditions are Y(0,t)=Y(L,t)=0 with initial conditions Y(x,0)=0 and Yt(x,0)=0 I tried to solve it by Laplace transfoming the PDE in time and everything worked fine until I got to the point where I had to inverse the...
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