unreferenced date December 2011 Image Perpendicular coloured.svg right thumb 250px The segment AB is perpendicular ... and a plane are considered perpendicular or orthogonality orthogonal to each other if they form congruence ... or adjective . Thus, as illustrated, the line AB is the perpendicular to CD through the point B. By definition ... 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 perpendicular ... angles are perpendicular. In a coordinate plane, perpendicular lines have opposite reciprocal slopes ... the slope of a vertical line is described as undefined or sometimes infinity. Two lines that are perpendicular would be denoted as AB math perp math CD. 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 AB through the point P using compass and straightedge ... connect Q and R to construct the desired perpendicular PQ. To prove that the PQ is perpendicular ... to parallel lines Image perpendicular transversal v3.svg right thumb 200px Lines a and b ... are both perpendicular to a third line c , all of the angles formed along the third line are right angles. Therefore, in Euclidean 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 ... shaded angles. Line c is perpendicular to line a . Line c is perpendicular to line b . Perpendicular symbol The perpendicular symbol is math perp math . For example, math AB perp CD math indicates that line AB is perpendicular to line CD . In the Unicode character set, the perpendicular sign ... sub 2 sub a sub 2 sub x b sub 2 sub , the graph of the functions will be perpendicular and will make ... more details
Perpendicular may refer to Perpendicular , in mathematics two lines at right angles Perpendicular axis theorem Perpendicular Period , style and period of mediaeval English Gothic architecture Perpendicular plate of ethmoid bone Perpendicular plate of palatine bone Perpendicular Point , New Zealand Perpendicular recording , disc drive technology See also Point Perpendicular , New South Wales, Australia Purpendicular , music album by Deep Purple disambig da Perpendikul r ... 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
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
Location map New Zealand label Perpendicular Point position right lat dir S lat deg 42 lat min 05 lat sec 02 lon dir E lon deg 171 lon min 20 lon sec 30 lat long width 220 float right caption Location of Perpendicular Point File Spotted Shag.jpg thumb right alt Young Spotted Shag standing on a rock Spotted Shags nest on the cliffs Perpendicular Point is a small headland on the West Coast, New Zealand West Coast of New Zealand s South Island , overlooking the Tasman Sea . It lies about 40 km south south west of Cape Foulwind , close to the small community of Te Miko. Important Bird Area The point has been identified as an Important Bird Area , by BirdLife International because the coastal cliffs in its vicinity are a breeding site for over 500 pairs of Spotted Shag s. ref BirdLife International. 2012 . Important Bird Areas factsheet Te Miko & Perpendicular Point. Downloaded from http www.birdlife.org on 2012 02 17. ref References Reflist coord 42 05 02 S 171 20 30 E display title region NZ NTL type landmark Category Buller District Category Headlands of New Zealand Category Important Bird Areas of New Zealand WestCoastNZ geo stub ... more details
Perpendicular recording or Perpendicular Magnetic Recording, PMR is a technology for data recording on hard ... Perpendicular recording can deliver more than three times the Computer storage density storage .... ref http laptoplogic.com reviews detail.php?id 145 2008 review of drives with perpendicular recording ... changing. Perpendicular recording is predicted to allow information densities of up to around ... been perpendicular recording demonstrations of 800 900Gb in sup 2 sup . ref http www.conceivablytech.com ... Hard Drives Get New Record Density.I ref Technology File Perpendicular Recording Diagram.svg 400px right thumb Diagram of perpendicular recording. Note how the magnetic flux travels through the second ... thermal fluctuations. 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 ... because in a perpendicular arrangement the magnetic flux is guided through a magnetically ... www.toshiba.co.jp about press 2004 12 pr1401.htm First Perpendicular Recording HDD Toshiba Press ... convert 2.5 in mm adj on hard drive using perpendicular recording technology, the Seagate Momentus ... 3.5 inch perpendicular recording hard drive, the Cheetah 15K.5, with up to 300GB storage, running ... announced the Barracuda 7200.10, a series of convert 3.5 in mm sing on HDDs utilizing perpendicular .... Hitachi announced a 20 GB Microdrive . Hitachi s first laptop drive 2.5 inch based on perpendicular ... designed and manufactured perpendicular magnetic recording PMR technology to achieve 80 GB per platter ... HARD DRIVES USING 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 ... HDD is based on perpendicular magnetic recording PMR and was designed in the short 1.8 inch form ... 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 perpendicular 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 x 2 dm int y 2 dm I x I y 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 Category ... 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
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 of the Beecroft Peninsula , in New ... was replaced in 1993 with a skeletal tower which is active. History 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 Lighthouse Australia Cape ... Island or Crocodile Head . Point Perpendicular was chosen in September 1883 by Colonial Architect ... name Point Perpendicular Light active image name Point Perpendicular skeletal.jpg caption Skeletal tower that replaced Point Perpendicular Lighthouse location Point Perpendicular , New South Wales , Australia ... month November year 1999 title Pt Perpendicular Expedition Report Part 1 of 2 author Deborah ... 2010 ref Structures File Point Perpendicular Lighthouse and Keeper s quarters c1899.jpg thumb left ... and lightvessels in Australia commons category Point Perpendicular Lighthouse References reflist ... The Point Perpendicular Lighthouse at Jervis Bay url3 Pt 20Perpendicular cite ssl NSW perpendicular Point Perpendicular cite journal journal Lighthouses of Australia Inc Bulletin url http ... year 1999 title Newspaper Article Marks Point Perpendicular 100th author Alan Clark, South Coast Register ... establishments in Australia de Point Perpendicular Leuchtturm ... 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
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
Orphan date May 2011 The tactical diameter of a ship is the distance travelled on sea surface during a turning circle test with maximum rudder angle by the center of gravity of a ship taken perpendicular to the initial track followed at approach speed when the heading has changed by 180 The ratio of the tactical diameter divided by the ship s length between perpendicular s gives a dimentionless parameter which can be used to compare ships manoeuvrability. External links http ittc.sname.org new 20recomendations pdf 20Procedures 202008 7.5 04 02 01.pdf Category Marine engineering ... 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
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
D73 may refer to 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
Infobox Bone Name Ossification of ethmoid Latin GraySubject 36 GrayPage 153 Image Gray194.png Caption Sagittal section of skull. Ethmoid bone visible as white structure to left. Image2 Caption2 Origins Insertions Articulations MeshName MeshNumber The ethmoid is ossified in the cartilage of the nasal capsule by three centers one for the perpendicular plate, and one for each labyrinth. The labyrinths are first developed, ossific granules making their appearance in the region of the lamina papyracea between the fourth and fifth months of fetus fetal life, and extending into the conch . At birth, the bone consists of the two labyrinths, which are small and ill developed. During the first year after birth, the perpendicular plate and crista galli begin to ossify from a single center, and are joined to the labyrinths about the beginning of the second year. The cribriform plate is ossified partly from the perpendicular plate and partly from the labyrinths. The development of the ethmoidal cells begins during fetal life. Gray s Ossification Category Skull musculoskeletal stub developmental biology stub ... more details
light consists of the parallel component and the perpendicular component. The ratio between these two ... and perpendicular component is known as the depolarisation ratio. And can be obtained as shown in equation 1 equation 1 . Equation 1 rho frac I perpendicular I parallel quad textrm or quad frac I depolarized ... ref Equation 1. Raman depolarisation ratio. Where I sub perpendicular sub signifies the peak intensity with excitation and Raman analysis polarisers orientated perpendicular ..., when the polarisers were parallel, and an intensity of 1 unit when the polarisers were perpendicular ... more details
wiktionary axes Axes may refer to Axe s, woodworking hand tools The plural of wikt axis axis Axes album Axes album , a 2005 rock album by the British band Electrelane X and Y axes, or X, Y, and Z axes, perpendicular lines used in the Cartesian coordinate system See also Axe disambiguation Axis disambiguation 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
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
Muscle cross sectional area or Muscle CSA is the area of the cross section of a muscle perpendicular to its longitudinal dimension generally at it largest point. It is used to describe muscle contraction properties. ref http jp.physoc.org cgi content abstract 338 1 37 Strength and cross sectional area of human skeletal muscle ref References Reflist Category Skeletal muscle muscle stub ... more details
matrix frac 1 2 end matrix z 1 math is the radius of the semicircle on math 1z math , the common perpendicular ... perpendicular to both ultraparallels math p math and math q math . Proof in the Klein model In the Klein ... line s to the unit circle at the endpoints of the chords. Lines perpendicular to line ... will be the desired common perpendicular of the ultraparallel lines. If one of the chords happens to be a diameter, we do not have a pole, but in this case any chord perpendicular to the diameter is perpendicular as well in the hyperbolic plane, and so we draw a line through the pole of the other line intersecting the diameter at right angles to get the common perpendicular. The proof is completed ... defines the required chord perpendicular to the two other chords. References Karol Borsuk & Wanda ... more details
Unreferenced stub auto yes date December 2009 mergeto selection rule date December 2010 Orphan date February 2009 In Vibrational spectroscopy surface vibrational spectroscopy , the surface selection rule is applied to identify the peaks observed in vibrational spectra. When a molecule is adsorption adsorbed on a substrate, the molecule induces opposite image charges in the substrate. The dipole dipole moment of the molecule and the image charges perpendicular to the surface reinforce each other. In contrast, the dipole moments of the molecule and the image charges parallel to the surface cancel out. Therefore, only molecular vibrational peaks giving rise to a dynamic dipole moment perpendicular to the surface will be observed in the vibrational spectrum. DEFAULTSORT Surface Selection Rule Category Spectroscopy Physics stub Chemistry stub ... more details
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