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"The advantages of using a stability ball as a chair
Tracker Ball. This device is very similar to a mouse itself in terms of the functions that it performs but there is a difference in the physical appearance. An advantage of the tracker ball is that a finger or the palm of the hand is used to roll the ball in any direction so there is an ease of use in comparison to the mouse where the entire arm has to be used. There are also buttons on the tracker ball which work in the same way as a mouse. An advantage that the trackerball has over the mouse is that it can be used on any surface because the ball is on top of the mouse whereas with a normal mouse an uneven surface may hinder its performance and speed.
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The disadvantages of using ball screws are that they are expensive, they can be back driven and they don't work effectively for hand-fed machine tools.
copper losses Comment: Advantages: Their operation is silent They have a high efficiency They are relatively safe Disadvantages Expensive Copper losses and hysteress losses
Ball grabber
Tracker Ball: A Trackerball is an Input Device.A tracker ball is a pointing device; it is a mouse lying on its back. To move the pointer, you rotate the ball with your thumb, your fingers, or the palm of your hand. There are usually one to three buttons next to the ball, which you use just like mouse buttons.
The advantage of the E-ball computer technology is that it is portable and it has a large memory. The disadvantage is that the cost of the E-ball is very high and the normal operating systems cannot work in these computers.
Advantages are: its better than a mouse with a ball because the mouse with a ball requires a course surface to spin the ball. Disadvantage: is that if its for a game, you can over swing it and have a hard time hitting whatever your shooting at for instance, and they can be pretty annoying to use.
The advantages of the ball machines has to be that they are consistent, they helps one work out, will help to improve return shots, one can use them alone or with others.
In computing, a track ball is a pointing device, such as the one seen at the bottom of a computer mouse. They work by using sensors to detect the direction in which the user is moving it.