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Search Results - Axis of rotation

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A rotation is a movement of an object in a circular motion. A two-dimensional object rotates around a center (or point) of rotation. A three-dimensional object rotates around a line called an axis. If the axis of rotation is within the body, the body is said to rotate upon itself, or spin—which implies relative speed and perhaps free-movement with angular momentum. A circular motion about an external point, e.g. the Earth about the Sun, is called an orbit or more properly an orbital revolution.

All rigid body movements are rotations, translations, or combinations of the two.

A Rotation is simply a progressive radial orientation to a common point. That common point lies within the axis of that motion. The axis is 90 degrees perpendicular to the plane of the motion. If the axis of the rotation lay external of the body in question then the body is said to Orbit. There is no fundamental difference between a “rotation” and a “orbit” and or "spin". The key distinction is simply where the axis of the rotation lay, either within or without a body in question. This distinction is and can be demonstrated in and for both “ridged” and “non ridged” bodies.

If a rotation around a point or axis is followed by a second rotation around the same point/axis, a third rotation results. The reverse (inverse) of a rotation is also a rotation. Thus, the rotations around a point/axis form a group. However, a rotation around a point or axis and a rotation around a different point/axis may result in something other than a rotation, e.g. a translation.

Showing 1 to 4 of 4 Articles matching 'Axis of rotation' in related articles.
Pages: 1

1. Vertical Axis Wind Turbines
November 19, 2009

The vertical axis wind turbine is not commonly used in electricity generation due to the inefficiency of the standard design. Most electricity generating wind turbines that you see across the landscape are of the horizontal axis type. They feature large fan-like blades that face into the wind and are rotated as the wind speeds past them. This rotation is around an axis that lies in the horizontal plane. Vertical axis wind turbines, on the other hand, rotate around a central column and this axis is in the vertical plane. Let's take a brief look at the two main types of design for vertical axis ... (read more)

Author: Zac Nilson

2. Blower Fans by Canada Blower
September 16, 2009

In the axial flow ventilator the air must blow in line with the axis of rotation and there must be blades with space between them. With few exceptions, the axial blower or fan must not have a lot of back pressure and will work a lot better if the blade is shrouded. One obvious exception is the turbine compressor used in jet engines, but this requires very tight fittings and very high speed so the air is being rammed in against the outgoing air much faster than it can move - it uses a lot of power and makes a lot of noise. Shrouding works better because the greatest loss in an unshrouded fan... (read more)

Author: Susan Terlitski

3. Welcome to the Loan Age
September 02, 2009

Earth’s Rotational Periods Cause Ice Ages, Warming and Change “Researchers have stopped the debate about the underlying mechanism that have caused periodic ice ages on Earth for the past 2.5 million years – they finally linked them to slight shifts in solar radiation caused by predictable changes in the Earth’s rotation and axis.” So is that what caused the Loan Age? The period 2007 to 2010, will forever be known on earth as “The Loan Age” when just about everyone went into financial stress. The earth has been through many ages in its four and a half billion year lifetime. Some eras were... (read more)

Author: glen loyd

4. Positioning Flash CS4 Objects in 3D Space: Using the 3D Rotation Tool
May 26, 2009

With the introduction of the CS4 Professional, Flash has transitioned itself from a mere 2D animation tool to a program that can animate and position objects in three dimensional space. Developers can add perspective to objects in 3D space throughout the development of flash animation. Flash CS4 has introduced special tools for precise 3D positioning. These tools include the Transform Panel, the 3D rotation tool and the 3D translation tool. The special tools are used for positioning objects in 3D space use three dimensional coordinates. These coordinates include x, y and z axis. Using them ... (read more)

Author: Manish Shrivastava

Pages: 1


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