Search Results - Perpendicular
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In geometry, two lines or planes (or a line and a plane), are considered perpendicular (or orthogonal) to each other if they form congruent adjacent angles. The term may be used as a noun or adjective. Thus, referring to Figure 1, the line AB is the perpendicular to CD through the point B. Note that by definition, a line is infinitely long, and strictly speaking AB and CD in this example represent line segments of two infinitely long lines. Hence the line segment AB does not have to intersect line segment CD to be considered perpendicular lines, because if the line segments are extended out to infinity, they would still form congruent adjacent angles. If a line is bending to another as in Figure 1, all of the angles created by their intersection are called right angles (right angles measure ½p radians, or 90°). Conversely, any lines that meet to form right angles are perpendicular. In a coordinate plane, perpendicular lines have opposite reciprocal slopes. A horizontal line has slope equal to zero while the slope of a vertical line is described as undefined or sometimes ±infinity. In a Cartesian coordinate system, two straight lines L and M may be described by equations.
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Showing 1 to 17 of 17 Articles matching 'Perpendicular' in related articles. |
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1. How to play lacrosse: how to shoot.
November 21, 2008
Lacrosse shooting: is fundamental to your success. Want to know how to shoot a lacrosse ball? Well here are five steps to help you improve your game and shoot a lacrosse ball better. 1) For starters, your shoulders should be in perpendicular alignment to the goal. This will give you better balance when you shoot and allow you to square up and have a stronger shot. (Also making it harder to get knocked down.) 2) The second thing to note: when you shoot with your right hand, you should lead with their left foot. Also, left handed shooting should be led into with your right foot. ... (read more)
Author: Spencer Ar
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2. O2 XDA Stealth PDA Mobile Phone
October 24, 2008
The O2 Xda Stealth is one of the primary Windows Mobile Pocket PC to have a perpendicular slider with a numeric key pad. With exotic black looks and attractive features, O2 Xda Stealth is bound to find many admirers.
Key Features It has other advanced features like a 2 megapixel camera with macro mode, Bluetooth, Wi-Fi, GPRS and EDGE, mini USB port and a lot more. The camera on the Stealth is outstanding. The camera is 2 mega-pixels with flash, and has a lot of built in features.
Design When you hold the phone in your hands, you will find on the right hand side of the stealth ther... (read more)
Author: Monty Alexander
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3. Tennis Rackets
October 24, 2008
Grip, Footwork and Strokes Footwork is weight control. It is correct body position for strokes, and out of it all strokes should grow. The tennis racket grip is a very essential part of a stroke, because a faulty grip will ruin the finest serving. The English grip with the low wrist on all ground strokes has proved very successful in the past. The Eastern American grip is the English grip without the low wrist and broken line. To acquire the forehand grip, hold the tennis racket with the edge of the frame towards the ground and the face perpendicular, the ha... (read more)
Author: Carole Nixon
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4. Real Christmas Tree Care Tips
October 20, 2008
When a Christmas tree is cut, over half of its weight is water. With proper care, you can maintain the quality of your displayed Christmas trees. Below are a number of tips relating to the care of displayed Christmas trees: Displaying trees in water in a traditional reservoir type stand is the most effective way of maintaining their freshness and minimizing needle loss problems. Make a fresh cut to remove about a 1/2-inch thick disk of wood from the base of the trunk before putting the tree in the stand. Make the cut perpendicular to the stem axis. Don't cut the trunk at an angle or into a ... (read more)
Author: Wes Brown
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5. Installing Wall Mount Brackets for LCD TV
September 29, 2008
Installation of mount brackets for LCD/Plasma TV is a cumbersome task that needs expertise and knowledge of various dimensional issues. Sufficient expertise is very important to finish this task properly. The best way is to contract a professional and pay special attention to various safety measures during the whole installation process.
Select of Mounting Place
Selection of the best place for mounting your LCD or Plasma TV is very important. The place should be flat as well as perpendicular for the best viewing experience. Plain colored wall with soothing color patterns are best for... (read more)
Author: Thomas Homer
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6. When is a Wrench Like a Martini?
September 17, 2008
Not so long ago, we were looking at the 2007 IDEA Award winners and we stumbled over this product. The "Revolutionized Wrench" (also known as the X-Beam wrench. This "wrench with a twist" in no way alters the function of basic use of a wrench. Instead, it makes some very simple changes to civilize the classic, straight wrench more by having the grip perpendicular to the outer handle, making it possible to use the wrench continuously without unduly stressing the wrist. Simple and beautiful, and only a little bit different from an ordinary wrench. A martini, in its way, also removes some of... (read more)
Author: Bob Westal
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7. RECOMMENDED GUTTER SIZE, PITCH, GUTTER POSITION ON THE EAVE, & DOWNSPOUT SIZE
August 20, 2008
SIMPLE FACT: WATER RUNS DOWNHILL!
RECOMMENDED GUTTER SIZE, PITCH, GUTTER POSITION ON THE EAVE, & DOWNSPOUT SIZE
Needless to say if the current gutter and downspout system you have is not sized properly or at/or near level, water and debris will eventually accumulate and likely lead to overflowing. Also remember that rain does not necessarily fall vertically and that when rain falls perpendicular to a surface it increases the strain on the drainage system.
In sizing your gutters take into consideration the following for typical section lengths of eight to ten feet:
1.Gu... (read more)
Author: Dr. Sean Quinn
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8. Blocking In Volleyball
June 13, 2008
Blocking is considered the first defensive competence employed to try to keep your adversary to nail successfully in your court. While hearth of teaching of the fundamental principles I of volley ball on explaining what is the responsibility and the positioning for each part of body.
Feet
Place your width of shoulder of feet at parallel share and with two feet perpendicular to the net.
Lower The Body
Your hips and whole body should be adjusted to the top and of the coatings the net. The knees are in a light posture squatted in position lends in which allows you side sta... (read more)
Author: Janice Sherwood
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9. What are Polarization Maintaining Fibers? Fiber Optics Tutorial Series 6
March 31, 2008
:: What is polarization?
Light waves consist of oscillating electric and magnetic fields. These two fields are perpendicular to each other and to the direction of light traveling. We call the electric field plane as the light's polarization.
Sunlight and many other ordinary light is made of many light waves, each with their electric and magnetic fields oriented randomly. If all waves' electric fields were aligned parallel to each other, we call this light linearly polarized.
:: Polarization's effect on optical fibers
Polarization does not really matter in multimode fibers b... (read more)
Author: Colin Yao
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10. Wallpaper: Basic Wallpapering Steps
March 11, 2008
So you’ve prepared your walls and planned the best sequence of application. Now you are ready to get down to the basic procedure of wallpapering. Don’t forget that no home has walls that are exactly vertical. For the best looking wall covering, your paper needs to be hung on a plumb line.
A plumb line is one that is exactly perpendicular to the floor. You can measure this by making your own plumb line tool. Just take a length of string line, rub it with a piece of chalk, and attach a small weight to the end of it. Thumbtack the other end to the top of the wall. Let the plumb bob (the sma... (read more)
Author: Carlo Morelli
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11. LCD Monitors - Best Choice of PC Users
December 27, 2007
A liquid crystal display or LCD monitor is a thin, flat device which is made up of a number of pixels arranged in front of a reflector. Each pixel of a LCD consists of a layer of molecules that are aligned between two transparent electrodes. There are also two polarising filters that are aligned perpendicular to each other. When a voltage is applied across the electrodes, a torque aligns the liquid crystal molecules parallel to the electric field. Light can be made to pass through in varying amounts by controlling the voltage applied across the liquid crystal layer in each pixel. In colour LC... (read more)
Author: Jayson Pablo
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12. The CNC Milling Process
November 14, 2007
CNC milling finds application making a wide range of custom parts. CNC milling is a cutting process in which material is removed from a block metal or plastic by a rotating tool. In CNC milling the cutting tool (called a “mill”) is moved in all three dimensions to cut a desired shape from stock. In this process, the material is usually removed by both the end and the side of the cutting tool. Unlike a drill which removes material only from the end, in CNC milling the cutting tool rotates about an axis that is perpendicular to the table that holds the work. Cutting tools of various profile sha... (read more)
Author: George Ure
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13. Current transformers and its factors
April 11, 2007
A current transformer is kind of electrical instrument, which is produced especially to provide a flow of current in the secondary circuit that is correctly perpendicular to the amount of current flowing in its primary circuit. To calculate current and monitor the operation of power grid Current Transformers are used widely and it is classically defined by its current ratio from primary to secondary.
Current transformers are most widely used in metering and protective relaying in the electrical power industry where they make easy the safest obligation of a huge amount of currents, ... (read more)
Author: Mr.Monish Mohan
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14. Current Transformer and factors
March 27, 2007
The currents transformers and its factors.
A current transformer is a type of electrical instrument that is produced to provide a flow of current in the secondary circuit which is accurately perpendicular to the current flowing in its primary circuit. To measure current and monitor the operation of the power grid Current transformers are used extensively and is typically defined by its current ratio from primary to secondary.
Current transformers (Current Transformer) are the most commonly used in metering and protective relaying in the electrical power industry where they facilitate... (read more)
Author: Victor George
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15. The Efficiency Of Cam Gears
March 24, 2007
Authors: Florian Ion TIBERIU-PETRESCU, Relly Victoria PETRESCU; The paper “The Efficiency of Cam (Gear)” presents an original method which may determine the efficiency of a mechanism with cam and follower. The originality of this method consists of eliminating the friction modulus. In this paper one analyzes four types of cam mechanisms: 1.The mechanism with rotary cam and plate translated follower; 2.The mechanism with rotary cam and translated follower with roll; 3.The mechanism with rotary cam and rocking-follower with roll; 4.The mechanism with rotary ... (read more)
Author: Florian Ion TIBERIU-PETRESCU
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16. Drywall: Taping And Mudding
September 05, 2006
Always mix mud throughly. Always make sure all nails and/or screws are recessed slightly below the paper surface of the sheetrock Spotting Nails and Screws Step 1. Using un-thinned but throughly mixed joint compound, get a small amount of mud on the knife and push into the small recess around the screw or nail, completely filling it. Step 2. Holding the knife perpendicular to the wall, scrape the excess off. Be sure the recess is completely covered. Step 3. Allow to dry and repeat coat twice. Note: If, when wiping the excess, you can feel a slight snag, it means the na... (read more)
Author: Lynn Solana
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17. Travel Journals - How To Keep A Travel Journal
October 30, 2005
It goes without saying that memories of trips and vacations fade with time. If you learn how to keep a travel journal, this need not be the case.
Traveling tends to be a schizophrenic event. On one hand, there is the trip you intended to take and may have even organized down to the tiniest detail. Then there is reality. Reality, of course, is what really happens as you head perpendicular to your original travel plans. It is these changes that provide the unique fodder to your trip that you’ll want to remember for years. This is where keeping a travel journal become invaluable.
Travel J... (read more)
Author: Rick Chapo
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