This means that positive charge acts as a source of Electric Fields like the way a faucet is a source of water. Gauss' Law means that negative charges acts as a sink for Electric Fields the way water drains or exits a region via a sink hole. This means Electric Field lines start and stop on Electric Charge.
What exactly is the meaning of the del symbol with an Maxwells wheel next to it, as seen in Equation ? To understand this, we will again use the analogy of flowing water to represent a vector function or vector field.
In Figure 1, we have a vector function V and we want to know if the field is rotating at the point D that is, we want to know if the curl is zero.
Example of a Vector Field Surrounding a Point. To determine if the field is rotating, imagine a water wheel at the point D. If the vector field representing water flow would rotate the water wheel, then the curl is not zero: In Figure 2, we can see that the water wheel would be rotating in the clockwise direction.
Hence, this vector field would have a curl at the point D. We must now make things more complicated. Is the curl of Figure 2 positive or negative, and in what direction? Because we are observing the curl that rotates the water wheel in the x-y plane, the direction of the curl is taken to be the z-axis perpendicular to plane of the water wheel.
In addition, the curl follows the right-hand rule: For Figure 2, the curl would be positive if the water wheel spins in a counter clockwise manner. The curl would be negative if the water wheel spins in the clockwise direction.
In Figure 2, the water wheel rotates in the clockwise direction.
Power & Sail Boat Anchoring Equipment An Introduction to Maxwell’s Products. To make the proper selection in anchor-handling equipment it is important to give careful. A man and his 12 year old daughter were lucky to escape from their burning home in Whitemore last night after heat from a chimney flue caused a fire in the . This page presents an intuitive overview of Maxwell's Equations. I've described them individually but they are talked about collectively on this page.
Hence, the z-component of the curl for the vector field in Figure 1 is negative. As you can imagine, the curl has x- and y-components as well.
Hence, the curl operates on a vector field and the result is a 3-dimensional vector. That is, if we know a vector field then we can evaluate the curl at any point - and the result will be a vector representing the x- y- and z-directions. Let's do another example with a new twist.
Imagine that the vector field F in Figure 3 has z-directed fields. Will the wheel rotate if the water is flowing up or down around it? The answer is no. Only x- and y- directed vectors can cause the wheel to rotate when the wheel is in the x-y plane. Hence, the z-directed vector fields can be ignored for determining the z-component of the curl.
Now, let's take more examples to make sure we understand the curl. What can we say about the curl of the vector field J at point G in Figure 4? Is the curl positive, negative or zero in Figure 4? And in what direction is it? First, since the water wheel is in the y-z plane, the direction of the curl if it is not zero will be along the x-axis.
Now, we want to know whether the curl is positive counter-clockwise rotation or if the curl is negative clockwise rotation.
However, it will not rotate the water wheel, because it is directed directly at the center of the wheel and won't produce rotation.
The green vector in Figure 4 will try to rotate the water wheel in the clockwise direction, but the black vector will try to rotate the water wheel in the counter-clockwise direction - therefore the green vector and the black vector cancel out and produce no rotation.Winch Selection Guide Which Winch?
There are a number of important criteria to be considered in selecting the correct anchor winch. These include the vessel size, displacement, windage, anchor size and rode selection. Maxwell's wheel is the classic way of showing the interplay between potential energy and kinetic energy, along with the effects of nearly-elastic collisions.
Maxwell's wheel consists of an axle-mounted flywheel suspended by nylon cords at both ends. Experiment 7 Maxwell’s wheel • Press the Set button of the light barrier. • Loosening the wire release stopper, sets the wheel into motion and the counter of the light barrier starts. • After the wheel has past the needle of the holder, the wire release is pressed again and locked before the light barrier is interrupted.3/5(2).
Cool Experiments with Magnets. This web site is devoted to magnetism and the cool experiments you can do with permanent magnets and electro-magnets.
Welcome to the Best Site for Brass-Era and Antique Auto Classifieds. Maxwell's Wheel-MAXW01 This classic device is used to demonstrate the conservation of mechanical energy and its conversion from one form to another. After the wheel is rotated by hand to roll the supporting cords to the top and then released, its potential energy turns into kinetic energy of rotation as it falls.