ClipArt ETC
Outdoor-type, cupped-disc-gap protectors on a three-phase line.

Protectors

Outdoor-type, cupped-disc-gap protectors on a three-phase line.

Horn-gap, choke-coil protector for alternating-current lines.

Alternating Current

Horn-gap, choke-coil protector for alternating-current lines.

A Pierce line wire, horn-gap protector.

Line Wire

A Pierce line wire, horn-gap protector.

A genus of stag-beetle of rather small size, chiefly characterized by the distinctness of the sixth ventral abdominal segment (shown in picture).

Platycerus

A genus of stag-beetle of rather small size, chiefly characterized by the distinctness of the sixth…

Plows used to dig sweet potatoes. "The long vines must be first disposed of. They are usually pulled by running a plow on each side of the row. This work is done much more satisfactorily if the line of plants be barred off with a turn-plow, to the beam of which is attached a rolling coulter, which cuts the vines close to the row." —Dugger 1911

Plows for Sweet Potato Harvesting

Plows used to dig sweet potatoes. "The long vines must be first disposed of. They are usually pulled…

A perpendicular line on a coordinate plane, showing what y the y-coordinate will be.

Perpendicular Line

A perpendicular line on a coordinate plane, showing what y the y-coordinate will be.

An x=y line on a coordinate plane.

Straight Line

An x=y line on a coordinate plane.

Equation of a straight line: a) parallel to y-axis, b) parallel to x-axis.

Straight Line

Equation of a straight line: a) parallel to y-axis, b) parallel to x-axis.

A straight line through the origin of a coordinate plane.

The Origin

A straight line through the origin of a coordinate plane.

To find the equation of a straight line in "tangent" form.

Line Equation

To find the equation of a straight line in "tangent" form.

A positive slope line making a 60 degree angle with the x-axis.

Straight Line

A positive slope line making a 60 degree angle with the x-axis.

A line with a standard form equation.

General Form

A line with a standard form equation.

A line with intercept form equation.

Intercept Form

A line with intercept form equation.

A line on the coordinate plane showing evidence of "perpendicular" form.

Perpendicular Form

A line on the coordinate plane showing evidence of "perpendicular" form.

Another method for using perpendicular form.

Alternate Method

Another method for using perpendicular form.

Other forms of line equations.

Line Equations

Other forms of line equations.

Finding the equation of a line drawn through a given point at a given direction.

Given Point

Finding the equation of a line drawn through a given point at a given direction.

Finding the equation of a line through two given points.

Line Equation

Finding the equation of a line through two given points.

Equation of a line with two given points and a given inclination.

Given Incline

Equation of a line with two given points and a given inclination.

Finding the perpendicular distance of points whose equation is x cosa + y sina = p.

Perpendicular Distance

Finding the perpendicular distance of points whose equation is x cosa + y sina = p.

An alternate form of the perpendicular distance method.

Alternate Form, Perpendicular Distance

An alternate form of the perpendicular distance method.

Multiple lines showing many bisectors on the coordinate plane.

Line Bisectors

Multiple lines showing many bisectors on the coordinate plane.

Any system of coordinate axes to another set which is parallel to the former, but with different origins.

Axes Shift

Any system of coordinate axes to another set which is parallel to the former, but with different origins.

A circle with many tangent and secant lines passing through it.

Lines

A circle with many tangent and secant lines passing through it.

If the chords of a circle are drawn through a fixed point, then the points of intersection of the pairs of tangents at the extremities of the chords will all lie on a fixed straight line.

Polar Property

If the chords of a circle are drawn through a fixed point, then the points of intersection of the pairs…

Finding the length of a tangent from a given point to a circle.

Tangent Length

Finding the length of a tangent from a given point to a circle.

Finding the polar equation of a straight line.

Polar Equation

Finding the polar equation of a straight line.

Finding the polar equation of a straight line by passing through two given points.

Straight Line

Finding the polar equation of a straight line by passing through two given points.

Finding the equation of a line with polar coordinates.

Polar Coordinates

Finding the equation of a line with polar coordinates.

Illustration of a 14 inch lathe, countershaft, line shaft, and belt connections.

Long Lathe

Illustration of a 14 inch lathe, countershaft, line shaft, and belt connections.

A scriber block is used to layout lines at a set height from the base, thus its second name surface height gauge or just "surface gauge". The work piece is held against an angle plate so that it is perpendicular to the surface plate, the scriber block is then adjusted to the required height and used to scribe a line parallel with the table, by sliding the block along the table's surface.

Scriber Block

A scriber block is used to layout lines at a set height from the base, thus its second name surface…

The pug is a breed of small, short-haired lap dogs, probably of Oriental origin, and introduced into Europe by way of Holland in the sixteenth century. The breed is characterized by the shortness of the face and uplifted form of nose. Only a fawn color, with blackish face, was known until about 1875, when a wholly black variety was introduced into the West from China. The pug is essentially a house dog, good-tempered and affectionate. Unless restrained, it becomes extremely fat. Its weight should not exceed fifteen pounds; its form should be compact and elegant, though robust, with straight legs, the face much wrinkled and forehead high, the coat smooth and silky, and the tail always tightly curled over the hip. The face and thin, small ears should be black, and in the fawn-colored breed a blackish line should run along the spine.

Pug Dog

The pug is a breed of small, short-haired lap dogs, probably of Oriental origin, and introduced into…

Illustration of a restored atrium and peristylium of the House of Pansa at Pompeii. The impluvium, pool, sits in the center of the atrium. The peristyle can be seen in the background. Four entrances to cubicula are pictured, as well as the entrances to oecus and andron. Two Ionic columns are visible in the opening between the atrium and peristyle. Four statues line the atrium.

The Interior (Atrium and Peristylium) of Pansa's house at Pompeii, Restored

Illustration of a restored atrium and peristylium of the House of Pansa at Pompeii. The impluvium, pool,…

Illustration of a monk, displaying an open book. His hood is pointed and appears to be unattached from his habit. His habit includes a robe-like undergarment with a short tunic on top. Crosses appear in a vertical line down the center of the front of the tunic.

A Monk with a Pointed Hood and Crosses on His Habit

Illustration of a monk, displaying an open book. His hood is pointed and appears to be unattached from…

Illustration of an Anglo-Saxon manor house or noble's house from 11th century England. There are several porticoes and entrances to the house. People huddle in the entryways, some have shields and spears. An animal head with antlers is at the pinnacle of one roof. The lord and lady are giving alms to several poor people in the courtyard. There is a line of men with canes, a group filling large pottery jars, and a line of people reaching for alms.

Anglo-Saxon Manor House, Circa 11th Century

Illustration of an Anglo-Saxon manor house or noble's house from 11th century England. There are several…

Illustration of the Norman-built Rochester castle. The architect of the castle was Gundulf, a Norman monk, and the castle protected England's southeast coast. It is a view of the castle from the northwest and two of its towers are visible. There is a road leading away from the castle. A woman and a child holding hands, walk down the road. Trees line the road.

Rochester Castle as Seen from the Northwest

Illustration of the Norman-built Rochester castle. The architect of the castle was Gundulf, a Norman…

The interior of the House of Commons in Parliament during the 1900's. It is pictured packed with representatives. The Commons Chamber was designed to foster adversarial feelings. Benches line the walls and face each other. The ceiling is vaulted and the walls are highly decorated.

The House of Commons Interior in the Early 20th Century

The interior of the House of Commons in Parliament during the 1900's. It is pictured packed with representatives.…

"And it came to pass, as they still went on, and talked, that, behold, there appeared a chariot of fire, and horses of fire, which parted them both asunder; and Elijah went up by a whirlwind into heaven." 2 Kings 2:11 ASV <p>Illustration of the prophet Elijah riding in a chariot drawn by three horses, being taken up to heaven. The chariot's wheels are flaming. A line of clouds supports the chariot and horses. The chariot has a star on the front. Elisha can be seen kneeling and watching from the ground. Mountains and a small town are pictured below.

Elijah Taken up to Heaven in a Chariot of Fire and a Whirlwind

"And it came to pass, as they still went on, and talked, that, behold, there appeared a chariot of fire,…

"A duck, <i>Fuligula</i> or <i>Fulix marila</i> and related species. The common scaup inhabits Europe, Asia, and North America. It is from 18 to 20 inches long, and from 30 to 35 in extent of wings." &mdash;Whitney, 1889 <p>In this illustration the duck is sitting on placid water, its feet tucked up underneath its body. Its head and upper body is dark, while its belly is white. There is a tree line in the distance.

Scaup, a Common Duck

"A duck, Fuligula or Fulix marila and related species. The common scaup inhabits Europe, Asia, and North…

A secant is "a line which cuts a figure in any way. Specifically, in trigonometry, a line from the center of a circle through one extremity of an arc (whose secant it is said to be) to the tangent from the other extremity of the same arc; or the ratio of this line to the radius; the reciprocal of the cosine. The ratio of AB to AD is the secant of the angle A; and AB is the secant of the arc CD." &mdash;Whitney, 1889

Circle with Secant

A secant is "a line which cuts a figure in any way. Specifically, in trigonometry, a line from the center…

"A draftsman's instrument for ruling parallel lines. It consists of a triangle so attached to a straight-edge that it can be moved back and forth on it a distance predetermined by the adjustment of a set-screw. a, a straight-edge; b, triangle moving on <i>a</i> for a distance determined by the set of the micrometer scale <i>c</i>; d, spring for releasing triangle and keeping it in the end of its slot." -Whitney, 1889

Section Liner, A Draftsman's Tool

"A draftsman's instrument for ruling parallel lines. It consists of a triangle so attached to a straight-edge…

"Having a sinuous pallial margin and consequent sinuous impression on the shell along the line of attachment of the mantle. Into the sinus thus formed the siphons, which are always developed in these bivalves, can more or less be withdrawn." —Whitney, 1889

Iphigenia Brasiliensis - Sinupalliate Right Valve

"Having a sinuous pallial margin and consequent sinuous impression on the shell along the line of attachment…

"To measure the depth of; fathom; try or test, as the depth of water and the quality of the ground, by sinking a plummet or lead attached to a line on which is marked the number of fathoms...a, rod with horns b pivoted thereto; c, sounding-line; d, wires by which the lead e is attached to the horns, connected with a washer f under the lead; h, opening in lower end of rod, by which specimens of the bottom may be secured. When the rod strikes the bottom, the lead slides downward, bringing the horns into the position shown in B, and releasing the wires d and the lead; the rod only is then drawn up, leaving the lead at the bottom." &mdash;Whitney, 1889

Brooke's Deep Sea Sounding Apparatus

"To measure the depth of; fathom; try or test, as the depth of water and the quality of the ground,…

"To measure the depth of; fathom; try or test, as the depth of water and the quality of the ground, by sinking a plummet or lead attached to a line on which is marked the number of fathoms...a, lead; b, counterpoised hooks which engage the loop at the top of the lead; d, wedge-shaped cup for specimens, attached by cord or wire to the pivot of the hooks; e, attachment for the sounding-line or wire. When the cup d touches bottom, the hooks b drop into the position show in E; the sinker or lead then drops over, releasing the cup, and this, with its specimen and the hooks, is drawn to the surface." &mdash;Whitney, 1889

British Navy Sounding Apparatus

"To measure the depth of; fathom; try or test, as the depth of water and the quality of the ground,…

"To measure the depth of; fathom; try or test, as the depth of water and the quality of the ground, by sinking a plummet or lead attached to a line on which is marked the number of fathoms...a and b, arms pivoted to c; d, lead, which is attached to a stem at the top of which is a crosspiece. When the arms are raised into the position shown in A, the crosspiece engages them and holds them in that position till the lead strikes the bottom; they are then released, and fall into the position show in B. The cups (shown in the cuts), on closing, scoop up a specimen of the bottom." &mdash;Whitney, 1889

Taselli's Sounding Apparatus with Cups Opened and Closed

"To measure the depth of; fathom; try or test, as the depth of water and the quality of the ground,…

"...the triangular space comprehended between the outer curve or extrados of an arch, a horizontal line drawn through its apex, and a vertical line through its springing; also, the wall-space between the outer moldings of two arches and a horizontal line or string-course above them, or between these outer moldings and the intrados of another arch rising above and inclosing the two. In medieval architecture the spandrels are often ornamented with tracery, sculptured foliage, and the like." —Whitney, 1889 <p>Illustration of a spandrel from the cloisters at Mont Saint-Michel in France.

Sculptured Spandrel from Mont Saint-Michel

"...the triangular space comprehended between the outer curve or extrados of an arch, a horizontal line…

"...an instrument which gives a spectrum when the source of the light is in a straight line with the eye&mdash;that is, which gives dispersion without deviation&mdash;is called a direct vision spectroscope..." —Whitney, 1889

Direct Vision Spectroscope

"...an instrument which gives a spectrum when the source of the light is in a straight line with the…

<i>Chalybion caeruleum</i>. "A family of fossorial hymenopters, or digger wasps. The prothorax is narrowed anteriorly, and forms a sort of neck; the basal segment of the abdomen is narrowed into a long, smooth, round petiole; and the head and thorax are usually clothed with a long, thin pubescence. These wasps usually burrow into sand-banks, and provision their cells with caterpillars and spiders." &mdash;Whitney, 1889

Spider Huntress Wasp

Chalybion caeruleum. "A family of fossorial hymenopters, or digger wasps. The prothorax is narrowed…

This divider features stars in a horizontal line across the front, as well as folded, fluttery corners that appear almost like seashells. The divider can also be used as a banner with writing in between the stars.

Divider with Star Pattern

This divider features stars in a horizontal line across the front, as well as folded, fluttery corners…