Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

What is curl?

  1. Jun 10, 2015 #1
    I do not understand this even the one in Wikipedia. Can anyone explain it to me as simple as possible as well as give me some simple examples?
    Thanks a lot!
     
  2. jcsd
  3. Jun 10, 2015 #2

    Nugatory

    User Avatar

    Staff: Mentor

    Intuitively...

    Imagine a body of water with some currents flowing in it. At every point, the water is moving in some direction at some speed, and we can describe this motion with a vector at that point. That's an example of a vector field and we can write the current at a point as vector-valued function of position: ##\vec{F}(x,y,z)##.

    Now, imagine a tiny particle of silt floating around in the water, moving along with the water in whichever direction the currents are pushing it. If that particle of silt would tend to rotate as it moves, then the vector field has non-zero curl at that point. We represent the curl as a vector by adopting the convention that it points perpendicular to the plane of rotation and has a magnitude proportional to the strength of the rotation.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: What is curl?
  1. Curl of a function (Replies: 5)

  2. Curl in cylindrical (Replies: 1)

Loading...