Image Perpendicular coloured.svg right thumb 250px The segment AB is perpendicular to the segment CD ... perpendicular or orthogonal to each other if they form congruence geometry congruent adjacent ..., the line AB is the perpendicular to CD through the point A. By definition, a line mathematics ... 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 perpendicular to another as shown, all of the angles ... s, or 90 Degree angle . 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 .... Two lines that are perpendicular would be denoted as AB math perp math CD Numerical criteria In terms ... math and math M math are perpendicular if and only if the product of their slopes is 1, or if math ac 1 math . Construction of the perpendicular Image Perpendicular construction.svg right thumb Construction of the perpendicular blue to the line AB through the point P. To make the perpendicular to the line ... perpendicular PQ. To prove that the PQ is perpendicular to AB, use the Congruence geometry Congruence ... Image perpendicular transversal v3.svg right thumb 200px Lines a and b are parallel, as shown by the tick marks, and are cut by the transversal line c. If two lines a and b are both perpendicular to a third ... geometry , any two lines that are both perpendicular to a third line are parallel to each other, because of the parallel postulate . Conversely, if one line is perpendicular to a second line, it is also perpendicular to any line parallel to that second line. In the figure at the right, all of the orange ... c is perpendicular to line a . Line c is perpendicular to line b . Finding the perpendiculars of a function ... the slogan to find the slope of a perpendicular line, flip the fraction and swap the sign. Recall that any integer a is itself over one, and can be written as a 1 To find the perpendicular of a given ... more details
Perpendicular plate can refer to Perpendicular plate of ethmoid bone Perpendicular plate of palatine bone disambig Long comment to avoid being listed on short pages ... more details
Perpendicular may refer to Perpendicular , in mathematics two lines at right angles Perpendicular Period , a style and period of mediaeval English Gothic architecture Perpendicular recording , a disc drive technology Purpendicular , an album by Deep Purple disambig da Perpendikul r ... more details
File Point Perpendicular Lighthouse.jpg thumb 300px right Point Perpendicular Lighthouse Point Perpendicular is a Point geography point at the southern tip of the Beecroft Peninsula and at the northern entry to Jervis Bay Australia Jervis Bay , in New South Wales, Australia. It is the location of Point Perpendicular Light , a historic lighthouse which was active from 1889 to 1993, and a replacement skeletal tower which is active. ref cite loa NSW Point 20Perpendicular The Point Perpendicular Lighthouse at Jervis Bay url3 Pt 20Perpendicular ref The lighthouse and its grounds are an exclave of the State of New South Wales, being separated from the rest of New South Wales by a strip of land which is itself an exclave of the Australian Capital Territory . References reflist Category Australian Capital Territory Category Climbing areas of Australia Category Peninsulas of Australia Category Geography of the Australian Capital Territory Shoalhaven geo stub ... more details
Perpendicular recording or Perpendicular Magnetic Recording, PMR is a technology for data recording on hard ... University in Japan , and first commercially implemented in 2005. Advantages Perpendicular recording ... reviews detail.php?id 145 2008 review of drives with perpendicular recording. ref . Hard disk technology ... to the Superparamagnetism superparamagnetic effect , though this estimate is constantly changing. Perpendicular ... 8 drives with densities of 667Gb in sup 2 sup were available commercially, and there have been perpendicular ... Density.I ref . Technology File Perpendicular Recording Diagram.svg 400px right thumb Diagram of perpendicular .... Perpendicular recording uses higher coercivity material because the head s write field penetrates the medium more efficiently in the perpendicular geometry. The popular explanation for the advantage of perpendicular recording is that it achieves higher storage densities by aligning the poles ... stronger higher coercivity material as the storage medium. This is possible because in a perpendicular ... press 2004 12 pr1401.htm First Perpendicular Recording HDD Toshiba Press Release ref . Shortly ... adj on hard drive using perpendicular recording technology, the Seagate Momentus 5400.3. Seagate ... technology by the end of 2006. In April 2006, Seagate began shipping the first 3.5 inch perpendicular ... 7200.10, a series of convert 3.5 in mm sing on HDDs utilizing perpendicular recording with a maximum ... a 20 GB Microdrive . Hitachi s first laptop drive 2.5 inch based on perpendicular recording became ... perpendicular magnetic recording PMR technology to achieve 80 GB per platter density. ref name ... PERPENDICULAR MAGNETIC RECORDING TECHNOLOGY Bot generated title ref In August 2006 Fujitsu extended its convert 2.5 in mm sing on lineup to include SATA models utilizing perpendicular recording, offering up to 160GB capacity. In December 2006 Toshiba said its new 100GB two platter HDD is based on perpendicular ... HOAGLAND.pdf Magnetic Disk History History of Magnetic Disk Storage Based on Perpendicular Magnetic ... more details
In geometry , the perpendicular distance from a point math x 1, y 1 math to the line ax by c 0 is given by math d frac ax 1 by 1 c sqrt a 2 b 2 . math If the linear equation equation of the line is given on the form y kx m , the perpendicular distance from math x 1, y 1 math is given by math d frac k x 1 y 1 m sqrt k 2 1 . math Proof Two Dimensions Consider the line given by math ax by c 0 math and a point math P x 1,y 1 math . For ease, consider a point given by math Q x 0,y 1 math , where math x 0 by 1 c a math since math Q x 0,y 1 math is on the line . Then we have math d perp PQ sin theta x 1 x 0 sin theta math . Here math theta math is simply the angle between the line and the math x math axis, such that math tan theta m a b math . Using the Pythagorean theorem we have math sin theta a sqrt a 2 b 2 math , and math d perp x 1 x 0 sin theta left left x 1 frac by 1 c a right cdot frac a sqrt a 2 b 2 right left frac ax 1 by 1 c a cdot frac a sqrt a 2 b 2 right frac ax 1 by 1 c sqrt a 2 b 2 math . This can be extended to the case where math Q math is any point on the line, however, one can always choose math Q math such that one coordinate is common to math P x 1,y 1 math to simplify the formulation. Proof Higher Dimensions The general formula for higher dimensions can be quickly arrived at using vector notation . Let the hyperplane have equation math mathbf n cdot mathbf r mathbf r 0 0 math , where the math mathbf n math is a normal vector and math mathbf r 0 x 10 ,x 20 , dots,x N0 math is a position vector to a point in the hyperplane . We desire the orthogonal distance to the point math mathbf r 1 x 11 ,x 21 , dots,x N1 math . The hyperplane may also be represented by the scalar equation math sum i 1 N a i x i a 0 math , for constants math a i math . Likewise, a corresponding math mathbf n math may be represented as math a 1,a 2, dots, a N math . The magnitude of the vector math mathbf r 1 mathbf r 0 math is like our distance math PQ math above, so we desire the scalar ... more details
In physics , the perpendicular axis theorem or plane figure theorem can be used to determine the moment of inertia of a rigid object that lies entirely within a plane, about an axis at right angles to the plane, given the moments of inertia of the object about two perpendicular Coordinate axis axes lying within the plane. The axes must all pass through a single point in the plane. Define perpendicular axes math x , math , math y , math , and math z , math which meet at origin math O , math so that the body lies in the math xy , math plane, and the math z , math axis is perpendicular to the plane of the body. Let I sub x sub , I sub y sub and I sub z sub be moments of inertia about axis x, y, z respectively, the perpendicular axis theorem states that ref cite book title Physics author Paul A. Tipler chapter Ch. 12 Rotation of a Rigid Body about a Fixed Axis publisher Worth Publishers Inc. isbn 0 87901 041 X year 1976 ref math I z I x I y , math This rule can be applied with the parallel axis theorem and the stretch rule to find moments of inertia for a variety of shapes. If a planar object or prism, by the stretch rule has rotational symmetry such that math I x , math and math I y , math are equal, then the perpendicular axes theorem provides the useful relationship math I z 2I x 2I y , math Derivation Working in Cartesian co ordinates, the moment of inertia of the planar body about the math z , math axis is given by ref cite book title Mathematical Methods for Physics and Engineering author K. F. Riley, M. P. Hobson & S. J. Bence chapter Ch. 6 Multiple Integrals publisher Cambridge University Press isbn 978 0 521 67971 8 year 2006 ref math I z int x 2 y 2 dm int y 2 0 2 dm int x 2 0 2 dm math On the plane, math z 0 , math , so these two terms are the moments of inertia about the math x , math and math y , math axes respectively, giving the perpendicular axis theorem. References reflist See also Parallel axis theorem Stretch rule DEFAULTSORT Perpendicular Axis Theorem ... more details
Infobox lighthouse name Point Perpendicular Light original image name Point Perpendicular Lighthouse.jpg caption Point Perpendicular Lighthouse location Point Perpendicular , New South Wales , Australia pushpin map New South Wales pushpin latd 35 latm 5 lats 38.35 latNS S longd 150 longm 48 longs 15.98 longEW E coordinates display inline, title yearbuilt yearlit 1899 automated 1993 yeardeactivated ... lens fogsignal racon admiralty canada NGA ARLHS File Point Perpendicular Light and skeletal.jpg thumb left Point Perpendicular lighthouse and skeletal tower seen next to each other. Point Perpendicular Light is a lighthouse located on Point Perpendicular , a Point geography point at the southern tip ... File Point Perpendicular Lighthouse 1917.jpg thumb left Point Perpendicular lighthouse, 1917 File New Lighthouse and Keepers Quarters Point Perpendicular, Jervis Bay, 1917.jpg thumb left Plans for the lighthouse and keeper s quarters. Point Perpendicular Lighthouse was built to replace Cape St George ... the light were on Bowen Island or Crocodile Head . Point Perpendicular was chosen in September ... source. Infobox lighthouse name Point Perpendicular Light active image name Point Perpendicular skeletal.jpg caption Skeletal tower that replaced Point Perpendicular Lighthouse location Point Perpendicular ... Bulletin 20Nov 2099.htm Expedition month November year 1999 title Pt Perpendicular Expedition Report ... accessdate 6 September 2010 ref Structures File Point Perpendicular Lighthouse and Keeper .... See also List of lighthouses and lightvessels in Australia commonscat Point Perpendicular ... cite loa NSW Point 20Perpendicular The Point Perpendicular Lighthouse at Jervis Bay url3 Pt 20Perpendicular cite ssl NSW perpendicular Point Perpendicular cite journal journal Lighthouses of Australia ... month June year 1999 title Newspaper Article Marks Point Perpendicular 100th author Alan ... de Point Perpendicular Leuchtturm ... more details
Infobox Bone Name Perpendicular plate of ethmoid bone Latin lamina perpendicularis ossis ethmoidalis GraySubject 36 GrayPage 154 Image Gray150.png Caption Perpendicular plate of ethmoid . Shown by removing the right labyrinth . Image2 Gray151.png Caption2 Ethmoid bone from behind. MeshName MeshNumber DorlandsPre DorlandsSuf Image Gray854.png thumb 250px Bones and cartilages of septum of nose. Right side. The perpendicular plate of the ethmoid bone vertical plate is a thin, flattened lamina, polygon al in form, which descends from the under surface of the cribriform plate , and assists in forming the septum of the nose it is generally deflected a little to one or other side. The anterior border articulates with the spine of the frontal bone and the crest of the nasal bones. The posterior border articulates by its upper half with the sphenoidal crest , by its lower with the vomer . The inferior border is thicker than the posterior, and serves for the attachment of the septal cartilage of the nose. The surfaces of the plate are smooth, except above, where numerous grooves and canals are seen these lead from the medial foramina on the cribriform plate and lodge filaments of the olfactory nerves . Additional images gallery Image Gray195.png Medial wall of left nasal fossa. Image Gray854.png Bones and cartilages of septum of nose. Right side. gallery External links SUNYAnatomyFigs 33 02 02 Diagram of skeleton of medial septal nasal wall. eMedicineDictionary perpendicular plate of ethmoid bone UMichAtlas rsa1p7 Nasal septum, lateral view NormanAnatomy lesson9 NormanAnatomyFig nasalseptumbonescarti Gray s Skull Category Bones of the head and neck musculoskeletal stub ... more details
Infobox Bone Name Perpendicular plate of palatine bone Latin lamina perpendicularis ossis palatini, pars perpendicularis GraySubject 41 GrayPage 168 Image Gray168.png Caption Left palatine bone . Nasal aspect. Enlarged. Vertical plate labeled at center left. Image2 Gray169.png Caption2 Left palatine bone. Posterior aspect. Enlarged. Vertical plate labeled at center left. System Precursor MeshName MeshNumber DorlandsPre DorlandsSuf The vertical part perpendicular plate of the palatine bone is thin, of an oblong form, and presents two surfaces and four borders. Surfaces The nasal surface exhibits at its lower part a broad, shallow depression, which forms part of the inferior meatus of the nose. Immediately above this is a well marked horizontal ridge, the conchal crest, for articulation with the inferior nasal concha still higher is a second broad, shallow depression, which forms part of the middle meatus, and is limited above by a horizontal crest less prominent than the inferior, the ethmoidal crest, for articulation with the middle nasal concha. Above the ethmoidal crest is a narrow, horizontal groove, which forms part of the superior meatus. The maxillary surface is rough and irregular throughout the greater part of its extent, for articulation with the nasal surface of the maxilla its upper and back part is smooth where it enters into the formation of the pterygopalatine fossa it is also smooth in front, where it forms the posterior part of the medial wall of the maxillary sinus. On the posterior part of this surface is a deep vertical groove, converted into the pterygopalatine canal, by articulation with the maxilla this canal transmits the descending palatine vessels, and the anterior palatine nerve. Borders The anterior border is thin and irregular opposite the conchal crest is a pointed, projecting lamina, the maxillary process, which is directed forward, and closes ... links eMedicineDictionary perpendicular plate of palatine bone Gray s Facial bones Category ... more details
Batement lights , in architecture , are the window Technical terms lights in the upper part of a perpendicular window , which are abated , or only half the width of those below. References 1911 Category Windows Architecture stub ... more details
Summary Taken by WhisperToMe This picture was taken towards the southwest on the 1600th block of Westheimer. The perpendicular street at the stoplight regulated intersection is Dunlavy. Licensing PD self date October 2006 Category Images of Houston, Texas ... more details
Summary Diagram showing the effect of Variation on the Moon s orbit exaggerated . The action of the Sun on an otherwise circular orbit distorts it into an ellipse with the major axis perpendicular to a line joining the Earth and Sun. Licensing GFDL self with disclaimers migration relicense ... more details
Summary Taken by me around feb 2006. The View looks down the Isere Valley which lies perpendicular to the Tarantaise Valley. Licensing PD self date February 2006 ... more details
A normal plane may refer to The plane perpendicular to the tangent vector of a space curve see Frenet Serret formulas . A term involving gears see list of gear nomenclature . See also Normal bundle Disambig ... more details
refer D 73 road United Arab Emirates , a road in Dubai connecting Jumeirah and running south eastward perpendicular to D 94 HMS Pursuer D73 , a 1942 Bogue class aircraft carrier Letter NumberCombDisambig ... more details
Unreferenced date April 2008 Oscillating reciprocation is an action where a body s displacement reciprocates in a given axis or defined displacement vector and oscillates along that axis usually perpendicular to the defined displacement. eg. the new Sabre Saw s on the market are reciprocating saw s which also oscillate the blade in an up and down fashion perpendicular to the cutting stroke. See also Reciprocating motion Reciprocating oscillation Category Dynamical systems Category Mechanical engineering ... more details
Summary Symmetry Group C sub 2h sub or 2 on the sphere. This full figure also represents two perpendicular great circles, like longitude circles at 0 and 90 degrees. Licensing PD self date October 2006 ... more details
Summary The author of this photograph is me, http shankbone.org David Shankbone . 8 August 2006. Cartier s famous New York location on 5th Avenue. The block of the street that runs perpendicular to 5th Avenue is named Cartier Place Licensing cc by 2.5 ... more details
Summary Drawing showing line DE bisecting line AB, line EF as a perpendicular bisector to segment AD and as a bisector of angle AED. Created by me using Inkscape. Released into Public Domain Licensing PD self date October 2006 ... more details
Crosswinds may refer to The plural of crosswind , any wind that is blowing perpendicular to a line of travel Crosswinds album Crosswinds album , a 1987 album by Capercaillie Crosswinds East Metro Arts and Science School An IB certified middle school and high school serving 9 districts in the state of Minnesota. disambig ... more details
wiktionarypar plummet Plummet may refer to one of the following Plumb bob , a weight with a pointed tip on the bottom that is suspended from a string and used as a reference line that is perpendicular to the ground Sinker fishing Plummet musicians , a trance duo See also Plumb disambig ... more details
Depolarization or depolarizer may refer to Depolarization , a decrease in the absolute value of a cell s membrane potential Depolarizer , a substance used to depolarize an electrochemical cell Depolarization ratio , the intensity ratio between the parallel component and the perpendicular component of Raman scattered light Depolarizer optics , a device for randomizing the polarization of light disambig ... more details
Summary Information Description Grid with offset squares can approximate a hexagonal grid while preserving perpendicular lines. Source self made Date 2007 Location Author User Haldrik Haldrik User talk Haldrik talk other versions Licensing PD self date February 2008 ... more details
Orphan date February 2009 The Trefftz plane is a Plane geometry plane located at an infinite distance downstream of the aircraft , which is perpendicular to the wake . References Joel Grasmeyer 1997 . A Discrete Vortex Method for Calculating the Minimum Induced Drag and Optimum Load Distribution for Aircraft Configurations with Noncoplanar Surfaces . 4 Category Aerodynamics aviation stub ... more details
Encyclopedia
top
