• Perpendicular Chiseling
    Perpendicular Chiseling
  • WordNet 3.6
    • adj perpendicular extremely steep "the great perpendicular face of the cliff"
    • adj perpendicular at right angles to the plane of the horizon or a base line "a vertical camera angle","the monument consists of two vertical pillars supporting a horizontal slab","measure the perpendicular height"
    • adj perpendicular intersecting at or forming right angles "the axes are perpendicular to each other"
    • n perpendicular an extremely steep face
    • n perpendicular a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point
    • n perpendicular a Gothic style in 14th and 15th century England; characterized by vertical lines and a four-centered (Tudor) arch and fan vaulting
    • n perpendicular a straight line at right angles to another line
    • ***

Additional illustrations & photos:

Right and Wrong Ways of Perpendicular Chiseling Right and Wrong Ways of Perpendicular Chiseling

Webster's Revised Unabridged Dictionary
  • Interesting fact: URanus' axis is at 97 degrees. which means that it orbits on its side. (Most of the planets spin on an axis nearly perpendicular to the plane of the ecliptic but Uranus' axis is almost parallel to the ecliptic.)
    • Perpendicular A line at right angles to the plane of the horizon; a vertical line or direction.
    • Perpendicular (Geom) A line or plane falling at right angles on another line or surface, or making equal angles with it on each side.
    • Perpendicular (Geom) At right angles to a given line or surface; as, the line ad is perpendicular to the line bc .
    • Perpendicular Exactly upright or vertical; pointing to the zenith; at right angles to the plane of the horizon; extending in a right line from any point toward the center of the earth.
    • ***
Century Dictionary and Cyclopedia
    • perpendicular Perfectly vertical; at right angles with the plane of the horizon; passing (if extended through the center of the earth; coinciding with the direction of gravity.
    • perpendicular In geometry, meeting a given line or surface (to which it is said to be perpendicular) at right angles. A straight line is said to be perpendicular to a curve or surface when it cuts the curve or surface in a point where another straight line to which it is perpendicular is tangent to the curve or surface. In this case the perpendicular is usually called a normal to the curve or surface.
    • perpendicular In zoology, forming a right angle with the longitudinal or latitudinal axis of the body: as, a perpendicular head; epimeron perpendicular, etc.
    • n perpendicular A line at right angles to the plane of the horizon; a line that coincides in direction with a radius of the earth or with the direction of gravity.
    • n perpendicular In geometry, a line that meets another line or a place at right angles, or makes equal angles with it on every side. Thus, if the straight line AB, falling on the straight line CD, makes the angles ABC, ABD equal to one another, AB is called a perpendicular to CD, and CD is a perpendicular to AB. A line is a perpendicular to a plane when it is perpendicular to all lines drawn through its foot in that plane.
    • n perpendicular In gunnery, a small instrument for finding the center-line of a piece of ordnance, in the operation of pointing it at an object; a gunner's level.
    • n perpendicular In ship-building, one of the three conventional lines perpendicular to the line of the keel, used as reference lines from which measurements in the fore-and-aft direction are taken. The conventional points through which these perpendiculars are passed vary. The forward perpendicular in old wooden vessels was at the intersection of the bottom line of the rabbet of the stem with the line of the lower deck. In modern practice in iron vessels it is usually at the intersection of the forward side of the stem with the normal load water-line, and this is its prescribed position in the United States navy. The after perpendicular, in wooden vessels, was at the intersection of the bottom line of the rabbet of the sternpost with the line of the lower deck. In modern vessels it is usually taken at the intersection of the after side of the rudder-post with the normal load-line, though it is sometimes taken through the axis of the rudder-stock. In the United States navy, however, it is taken at the intersection of the normal load water-line with the contour of the stern. The middle perpendicular, much less used than the other two, is midway of the length between the forward and after perpendiculars. The length between perpendiculars is the length of the vessel measured parallel to the keel between the forward and the after perpendiculars.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Perpendicular pėr-pen-dik′ū-lar exactly upright: extending in a straight line toward the centre of the earth:
    • n Perpendicular a perpendicular line or plane
    • adj Perpendicular pėr-pen-dik′ū-lar (geom.) at right angles to a given line or surface
    • ***


  • George Bernard Shaw
    “[Dancing is] A perpendicular expression of a horizontal desire.”


Webster's Revised Unabridged Dictionary
L. perpendicularis, perpendicularius,: cf. F. perpendiculaire,. See Perpendicle Pension
Chambers's Twentieth Century Dictionary
Fr.,—L. perpendicularisperpendiculum, a plumb-line—per, through, pendĕre, to weigh.


In literature:

The visible part of her sides was perpendicular, the bulging sections being entirely beneath the surface.
"The Submarine Hunters" by Percy F. Westerman
At the word every oar went up, and was held perpendicularly in the air with the left hand.
"Up The Baltic" by Oliver Optic
Fill it to the highest mark with milk fresh from the cow, and allow it to stand in a perpendicular position 24 hours.
"One Thousand Secrets of Wise and Rich Men Revealed" by C. A. Bogardus
The mountain was nearly perpendicular.
"Borneo and the Indian Archipelago" by Frank S. Marryat
Only a part is shown, including the chapel, which is Perpendicular with some older fragments.
"The Cornwall Coast" by Arthur L. Salmon
There remains a perpendicular turreted gateway.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3" by Various
A small stream pouring over a perpendicular wall drops six hundred and twenty feet into a volume of mist.
"The Book of the National Parks" by Robert Sterling Yard
From here it is perpendicular to the sea, a dozen feet down.
"The Birthright" by Joseph Hocking
Lines of perpendicular hieroglyphs separated the zones of personages.
"The Works of Theophile Gautier, Volume 5" by Theophile Gautier
As a rule the walls or external surfaces are perpendicular to their foundations.
"A History of Art in Chaldæa & Assyria, v. 1" by Georges Perrot
Horner lay face downward on his ledge, and studied the perpendicular rock below him for a way to reach the next.
"Kings in Exile" by Sir Charles George Douglas Roberts
Lower down, on an abrupt and perpendicular rock, was Fort Bard, which entirely controlled the valley.
"The Life of Napoleon Bonaparte" by William Milligan Sloane
The church of St Mary is cruciform and mainly Perpendicular.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1" by Various
The old village church of St Mary, principally Perpendicular, has a Norman south door.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 2" by Various
A space of perpendicular wall intervened.
"Cudjo's Cave" by J. T. Trowbridge
Remember our hills are little off the perpendicular.
"Ancestors" by Gertrude Atherton
But, though the perpendicular interstice be destroyed, the horizontal one extends entirely through the whole work.
"With the World's Great Travellers, Volume 1" by Various
It is a perpendicular cliff of well on towards a thousand feet above the waters of the lake.
"With the World's Great Travellers, Volume 2" by Various
Some perpendicular rocks prevented my going farther in that direction.
"The Story of a Strange Career" by Anonymous
The rocks on both sides are perpendicular, but there is a wooden staircase which leads to the bed of the river.
"Alida" by Amelia Stratton Comfield

In poetry:

Now the cliff was high three hundred feet,
And perpendicular;
And the skill that could build a castle there
Must come from lands afar.
"Betzko" by Hanford Lennox Gordon
Toward all,
I raise high the perpendicular hand—I make the signal,
To remain after me in sight forever,
For all the haunts and homes of men.
"Salut Au Monde" by Walt Whitman
So picture this scene and take warning
Oh Father, stand up perpendicular
And Mother beware, for sailors don’t care
And soldiers are not too particular.
"Father Come Home" by Billy Bennett
From the handsome little hut in which he dwelt,
With some food to his father, for whom he greatly felt,
Who was watching at the railway bridge,
Which was built upon a perpendicular rocky ridge.
"Saving a Train" by William Topaz McGonagall
The greatest attraction is Tantallon Castle, worthy of regard,
About three miles distant to the eastward;
Which in time of war reoeived many a shock,
And it's deemed impregnable and built on a perpendicular rock
"Beautiful North Berwick" by William Topaz McGonagall

In news:

Glossy, dark-green rectangles, cut down to the size of placemats and perpendicularly striped with veins.
Tramming ensures squareness and perpendicularity between the spindle and work surface.
In this situation, a perpendicular indicator might be the better choice.
The Case for the Perpendicular Indicator.
Seagates New Notebook PC Drives Feature Perpendicular Recording.
HDDs Future is Perpendicular .
Six feet away and perpendicular to the face for consistent portraits .
Tramming ensures squareness and perpendicularity between the spindle and work surface.
The Princess Diner, near the intersection where Route 27 makes a perpendicular turn, is the real thing, with a huge menu and friendly service.
If your projector is level and roughly perpendicular to the floor, you see a fair replica of the image.
It comprises millions of U-shaped wires perpendicularly placed on a silicon substrate with the read/write heads located at the bottom of the U.
A chord, radius, and perpendicular bisector used to illustrate how to find an equation for unknown values.
The Ultra concept is based on a fascinating patented principle, with individual saddles travelling perpendicular to the machine's center line.
We built the jig out of medium-density fiberboard (MDF), making sure that all of the cut edges were perpendicular to the faces.
Now, as you exhale, unfold one leg and lift it toward the sky, perpendicular to the floor.

In science:

The crystals were cut and polished perpendicular to the c axis, with thickness of about 1 mm.
Crossover from classical to random-field critical exponents in As-doped TbVO4
For these reasons, we might expect the observed P.A. of the linear polarization to be either parallel or perpendicular to the shock front.
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
The property of the wave front line is that the probability current is locally perpendicular to the line.
Paraxial propagation of a quantum charge in a random magnetic field
The random bonds are from uniform distribution with ∆Jij,⊥ /J0 = 1 in the perpendicular (z ) direction and constant Jij,k /J0 = 0.2 in the parallel (x, y ) direction.
A periodic elastic medium in which periodicity is relevant
The perpendicular P E is a space-like geodesic whose 3direction at P with respect to the tetrad at that point is given by the polar angles ϑ, ϕ.
Quantum Theory within the Framework of General Relativity
In this section we present basic properties of perpendicularity.
Classification theory for theories with NIP - a modest beginning
Also, as in [Sh:c, V], if ¯b is not perpendicular to ¯aζ for ζ < ζ ∗ and the ¯aζ -s are pairwise perpendicular then ζ ∗ < |T |+ (see ?).
Classification theory for theories with NIP - a modest beginning
For an endless indiscernible sequence I let w(I) = sup{α : there is a sequene of length α of pairwise endless indiscernible sequences each non perpendicular to I}.
Classification theory for theories with NIP - a modest beginning
Regions perpendicular to the jet direction are heated by transverse shocks and by turbulent mixing.
A Moderate Cluster Cooling Flow Model
As indicated, we have split the ten spacetime directions into those parallel and perpendicular to the string, µ = (a, i).
IIA/B, Wound and Wrapped
We claim that that the image of f : H 1(TS (−E )) → H 1(TS ) is contained in the subspace W of H 1(TS ) perpendicular to c1 (E ), i.e., Im f ⊂ W = {v ∈ H 1(TS ) : = 0}.
A Simple Proof that Rational Curves on K3 are Nodal
Let the wall be a hyperplane perpendicular to αi , choosing the largest i if there are several choices ; the reflection in that wall is a reflection rαi ,k .
Random Walk in an Alcove of an Affine Weyl Group, and Non-Colliding Random Walks on an Interval
If the 21-brane is perpendicular to y , an invariant solution is obtained by adding another 21-brane (not anti-brane) at its image point under the Z2 .
Bosonic M Theory
Viewed as vectors a and b are then of equal length and perpendicular to each other.
Bicomplex algebra and function theory
The pro jectivization of the hyperplane perpendicular to w ∈ O meets B precisely when ψ(w, w) < 0 and in that case ψ( , w)−1 defines a meromorphic section of OB (−1).
Compactifications defined by arrangements I: the ball quotient case