| Left And Right |
Website Links For Relative |
Information AboutLeft And Right |
| CATEGORIES ABOUT RELATIVE DIRECTION | |
| orientation | |
|
The most common relative . No , there is no absolute Inertial Frame Of Reference . There are definite relationships between the relative directions, however. Left and right, forward and backward, and up and down are three Complementary pairs Orthogonal to each other. If you climb a rope One Meter up, you will have moved Negative One meter down. Furthermore, you will not have moved left or right at all, nor forward or backward. One must mind the Geometry of his Environment when using relative direction to express Motion , however. For example, if you continue walking forward until you have almost Circumnavigated the Earth, you will expend much effort only to move backward slightly. This is because, on Earth, we use a Spherical Coordinate System wherein the Direction Vectors depend on Position . The , the radiation would follow the spin axis instead of being opposite to it. This definition of left and right is unwieldy. In practice, the meaning of relative direction words is conveyed through Tradition , Acculturation , Education , and direct reference. One common definition of up and down uses Gravity and the Planet Earth as a frame of reference. Since there is a very noticeable force of gravity acting between the Earth and any other nearby object, down is defined as that direction which an object moves in reference to the Earth when the object is left to Fall Freely . Up is then defined as the opposite direction of down. Another common definition uses a human body, standing upright, as a frame of reference. In that case, up is defined as the direction from feet to head, perpendicular to the surface of the Earth. Forward and backward may be defined by referring to an object or person's Motion . Forward is defined as the direction in which the object is moving. Backward is then defined as the opposite of forward. Alternately, forward may be the direction pointed by the observer's Nose , defining backward as the direction from the nose to the Sagittal Border in the observer's Skull . The terms left and right are derived from the fact that some 90% of the Population use the hand of the same side of their body for writing and other manual tasks. Through cognate of the word right in the meaning correct or good, the side with the hand most used was defined as the ''right'' side. The word left comes from the Old English lyft, meaning weak. This Dichotomy can also be seen in the words dextrous and sinister, from the Latin words for right and left. In order to figure out which hand is which you will need a Clock , a Compass , and the Sun . Face the sun and check the compass. Before noon, the compass points to your '''left''' hand. After noon, it points to your '''right'''. In most people, the Heart is to the left of the body's center line and the Liver is to the right. EXAMPLE In this diagram, showing a road with Right-hand Traffic , the red car is to the left of the blue car. The blue car is, therefore, on the right-hand side. Should the blue car move backward, it would reach the position of the yellow car, causing an accident. For the red car to be where the green car is, it would have to move forward. The lane containing the green and red cars is the left lane, the lane with the yellow and blue cars is the right lane. LEFT/RIGHT CONFUSION Left/right confusion is the difficulty some people have in distinguishing the difference between the directions left and right. Dyslexia is one of several conditions that affects a person's ability to quickly and easily consciously realise the difference. SEE ALSO
|
|
|