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"The ring which suspends some of the articles in use in the Alipterium." — Encyclopedia Britanica, 1893

Alipterium Tools

"The ring which suspends some of the articles in use in the Alipterium." — Encyclopedia Britanica,…

"The vertical or supporting beam of the A. is the shank, B; at the upper end of it is the ring, r; and just below the ring is a transverse piece called the stock, s s; the other extremity is the crown, c, from which branch out two arms or blades, g, in directions nearly at right angles to that of the stock; each arm spreads out into a broad palm or fluke, h, the sharp extremity of which is the peak or bill, k." — Chambers' Encyclopedia, 1875

Anchor

"The vertical or supporting beam of the A. is the shank, B; at the upper end of it is the ring, r; and…

This illustration shows an ancient ring from Korsabad.

Ancient Ring

This illustration shows an ancient ring from Korsabad.

"From annulus, a ring. A mark of difference of the fifth son."—Aveling, 1891

Annulet

"From annulus, a ring. A mark of difference of the fifth son."—Aveling, 1891

"Fifth Son, the ANNULET. The differences used by armorists at the present time are nine in number. They not only distinguish the sons of one family, but also denote the subordinate degrees in each house." -Hall, 1862

Annulet Difference

"Fifth Son, the ANNULET. The differences used by armorists at the present time are nine in number. They…

Illustration of circles used to find area between two circles (ring).

Area of Circles and Rings

Illustration of circles used to find area between two circles (ring).

"Gramme ring armature with six coils." — Hawkins, 1917

Gramme ring armature

"Gramme ring armature with six coils." — Hawkins, 1917

"Distribution of magnetic lines through a ring armature. Since the lines follow the metal of the ring instead of penetrating the interior no electromotive force is induced in that portion of the winking lying on the interior surface of the ring. There is, therefore, a large amount of dead wire or wire that is ineffective in inducing electromotive force; that is the chief objective to the ring type of armature." -Hawkins, 1917

Distribution of Magnetic Lines, Ring Armature

"Distribution of magnetic lines through a ring armature. Since the lines follow the metal of the ring…

"Ring armature of four pole dynamo; diagram of winding and connections, showing direction of the indced currents. the currents in the winding under the upper N and S poles are opposed to each other and flow to the external circuit by the positive brush 1, and back to this half of the armature by the negative brushes 3 and 4...The armature is said to be 'cross connected.' " -Hawkins, 1917

Ring Armature

"Ring armature of four pole dynamo; diagram of winding and connections, showing direction of the indced…

"Armillary Sphere, an instrument used in astronomy. In its simplest form, consisting of a ring fixed in the plane of the equator, the armilla is one of the most ancient of astronomical instruments. Slightly developed, it was crossed by another ring fixed in the plane of the meridian." — The Encyclopedia Britannica, 1910

Armilla

"Armillary Sphere, an instrument used in astronomy. In its simplest form, consisting of a ring fixed…

"Atolls. A coral island commonly consists of a narrow rim of reef, surrounding a lagoon." -Dana, 1880

Coral Island of Atoll

"Atolls. A coral island commonly consists of a narrow rim of reef, surrounding a lagoon." -Dana, 1880

"represents a section of an island, from the ocean (o) to the lagoon (l). On the ocean side, from o to a, there is shallow water for some distance out; and where not too deep, the bottom is covered here and there with growing corals. Between a and b there is a platform of coral rock, mostly bare at low tide, but covered at high ... b to d is the wooded portion of the island. The whole width (is) from the beach (b) to the lagoon (c)." -Dana, 1880

Section of Coral Island of an Atoll

"represents a section of an island, from the ocean (o) to the lagoon (l). On the ocean side, from o…

"Atwood's Machine. This difficulty has however been overcome by a curious piece of machinery invented by Mr. Atwood. This consists of an upright pillar, with a wheel on the top. The weights A and B are of the same size and are made to balance each other, exactly, being connected by a thread passing over the wheel. The ring R admits the weight A, to fall through it in its passage to the stage S, on which it rests. The right and stage slide up and down, and are fastened by a thumb screw. The pillar is a graduated scale, and M is a small bent wire, weighing a quarter of an ounce, and longer than the diameter of the ring." —Comstock, 1850

Atwood's Machine

"Atwood's Machine. This difficulty has however been overcome by a curious piece of machinery invented…

"Roman Ivory Aulos found at Pompeii, showing slides and rings." — The Encyclopedia Britannica, 1910

Aulos

"Roman Ivory Aulos found at Pompeii, showing slides and rings." — The Encyclopedia Britannica,…

"Beak mouthpiece. Found at Pompeii." — The Encyclopedia Britannica, 1910

Aulos Mouthpiece

"Beak mouthpiece. Found at Pompeii." — The Encyclopedia Britannica, 1910

An ornamental ring worn upon the arms and ankles in India and Africa.

Bangles

An ornamental ring worn upon the arms and ankles in India and Africa.

This Antique bottle is made out of hammered bronze and includes a cover and ring.

Antique Bottle

This Antique bottle is made out of hammered bronze and includes a cover and ring.

This Antique bottle is made out of hammered bronze and includes a cover and ring.

Antique Bottle

This Antique bottle is made out of hammered bronze and includes a cover and ring.

A life buoy, is a life saving buoy designed to be thrown to a person in the water, to provide buoyancy, to prevent drowning.

Life Buoy

A life buoy, is a life saving buoy designed to be thrown to a person in the water, to provide buoyancy,…

Ring from a wall of the Chichen-Itza Maya civilization.

Chichen-Itza Ring

Ring from a wall of the Chichen-Itza Maya civilization.

Men ringing the New Year's chimes.

Chimes

Men ringing the New Year's chimes.

Illustration of concentric circles used to find area between two circles (ring).

Concentric Circles (Ring) Area

Illustration of concentric circles used to find area between two circles (ring).

"Wire-rope clamp, an iron clamp, held together by bolts and nuts, used to hold the end of a wire rope to form a loop or ring. It is used to secure ends of derrick guy-ropes and wire standing rigging." -Whitney, 1911

Wire Rope Clamp

"Wire-rope clamp, an iron clamp, held together by bolts and nuts, used to hold the end of a wire rope…

"A vertical conductor carrying an electric current, and surrounded by a magnetic line of force, which is in turn surrounded by electric whirls; the magnetic line of force is an electric vortex-ring." — Avery, 1895

Vertical conductor

"A vertical conductor carrying an electric current, and surrounded by a magnetic line of force, which…

Illustration of a right circular cylinder with a smaller cylinder removed from the center and placed next to it.

Cylinder Cut From a Cylinder

Illustration of a right circular cylinder with a smaller cylinder removed from the center and placed…

Illustration of a hollow cylinder.

Hollow Cylinder

Illustration of a hollow cylinder.

Illustration of a thin hollow cylinder. It resembles a washer and is often referred to as a disc.

Hollow Cylinder

Illustration of a thin hollow cylinder. It resembles a washer and is often referred to as a disc.

Illustration of a hollow cylinder viewed at an angle.

Hollow Cylinder

Illustration of a hollow cylinder viewed at an angle.

Illustration of a hollow cylinder viewed at an angle from above.

Hollow Cylinder

Illustration of a hollow cylinder viewed at an angle from above.

Illustration of the isometric of a hollow cylinder.

Hollow Cylinder

Illustration of the isometric of a hollow cylinder.

Illustration of a shaded section of a hollow cylinder viewed from the side.

Hollow Cylinder

Illustration of a shaded section of a hollow cylinder viewed from the side.

Illustration of an oblique view of a hollow cylinder.

Oblique View Of Hollow Cylinder

Illustration of an oblique view of a hollow cylinder.

Illustration of an oblique view of a hollow cylinder. The portion removed from the center of the cylinder is in the shape of a rectangular prism.

Oblique View Of Hollow Cylinder

Illustration of an oblique view of a hollow cylinder. The portion removed from the center of the cylinder…

The ring-dove, of the order <em>Columb&aelig;</em>, is one of Europe's largest wild pigeons.

Ring Dove

The ring-dove, of the order Columbæ, is one of Europe's largest wild pigeons.

"Skeleton of Dugong: In which the pelvis is a mere bony ring." &mdash; Chambers, 1881

Dugong Skeleton

"Skeleton of Dugong: In which the pelvis is a mere bony ring." — Chambers, 1881

"Good judgement of distance is essential. Accuracy in thrusting and lunging is best attained by practicing these attacks against rings or other convenient openings, about three inches in diameter, suitably suspended at desired heights." &mdash; Moss, 1914

Dummy

"Good judgement of distance is essential. Accuracy in thrusting and lunging is best attained by practicing…

This Egyptian earring is a ring that is not quite closed.

Egyptian Earring

This Egyptian earring is a ring that is not quite closed.

According to Norse mythology, in Elfland, elves and fairies would dance in a circle in the moonlight. "Whenever the fairies danced at night, the grass grew greener. Any one going through the forest the next day could tell where the elves had been by the rings of green grass." -Klugh, 1909

Elves and Fairies Dancing

According to Norse mythology, in Elfland, elves and fairies would dance in a circle in the moonlight.…

A wheel or ring fixed to a framework, toothed on its inner side, and having in gear with it another toothed wheel of half the diameter of the first, fitted so as to revolve around the center of the latter.

Epicycloidal Wheel

A wheel or ring fixed to a framework, toothed on its inner side, and having in gear with it another…

"Grommet. Naut., a ring of rope used for various purposes, made from a strand laid three times round its own central part formed into a loop of the desired size." -Whitney, 1911

Grommet

"Grommet. Naut., a ring of rope used for various purposes, made from a strand laid three times round…

The championship fight between Heenan and Thomas Sayers, on April 17, 1860.

Heenan and Thomas Championship Fight

The championship fight between Heenan and Thomas Sayers, on April 17, 1860.

A horse trained to run around a circus ring with a man standing on his back.

Circus Horse

A horse trained to run around a circus ring with a man standing on his back.

An illustration of a ring tailed iguana.

Ring tailed iguana

An illustration of a ring tailed iguana.

"Experiment illustrating Lenz's Law. If a copper ring be held in front of an ordinary elecromagnet, and the current circulating through the coil of the magnet be in such a direction as to magnetize the core as indicated b the letters S N, then as the current increases in the coil more and more of the lines of force proceeeding from N pass through the ring OO from left to right." -Hawkins, 1917

Lenz's Law

"Experiment illustrating Lenz's Law. If a copper ring be held in front of an ordinary elecromagnet,…

An illustration of a man ringing a bell.

Man Ringing Bell

An illustration of a man ringing a bell.

"A grass napkin-ring is another thing that can be made by weaving or braiding the grasses." -Beard, 1906

Grass napkin-ring

"A grass napkin-ring is another thing that can be made by weaving or braiding the grasses." -Beard,…

A pay phone or pay phone is a public telephone, with payment by inserting money (usually coins) or a credit card or debit card before a call is made.

Pay Phone

A pay phone or pay phone is a public telephone, with payment by inserting money (usually coins) or a…

A pair of ring-necked pheasants, native to China.

Ring-Necked Pheasant

A pair of ring-necked pheasants, native to China.

The bell pull is used to summon the servants in a household. It is connected to a bell or bell wire to ring when pulled.

Bell Pull

The bell pull is used to summon the servants in a household. It is connected to a bell or bell wire…

"A Ring is any circle or section of a cylinder. Rings of gold, silver, and of other metals and materials have been worn in all times and countries, and while they have been used to decorate the ears, neck, nose, lips, arms, legs, and toes, finger rings have always occupied the most important and significant place among such ornaments. From the earliest period of civilized relationships the finger ring was a convenient means for carrying the signet of its wearer. Fig. 1 shows a Jewish marriage ring beautifully wrought in gold filigree, and richly enamelled."&mdash;(Charles Leonard-Stuart, 1911)

Ring

"A Ring is any circle or section of a cylinder. Rings of gold, silver, and of other metals and materials…

"A Ring is any circle or section of a cylinder. Rings of gold, silver, and of other metals and materials have been worn in all times and countries, and while they have been used to decorate the ears, neck, nose, lips, arms, legs, and toes, finger rings have always occupied the most important and significant place among such ornaments. From the earliest period of civilized relationships the finger ring was a convenient means for carrying the signet of its wearer. Fig. 2 shows a form of betrothal ring called a gimmel, or linked ring, which was used in later times; the upper figure shows the three parts brought together, the lower figures the parts separately."&mdash;(Charles Leonard-Stuart, 1911)

Ring

"A Ring is any circle or section of a cylinder. Rings of gold, silver, and of other metals and materials…

"A Ring is any circle or section of a cylinder. Rings of gold, silver, and of other metals and materials have been worn in all times and countries, and while they have been used to decorate the ears, neck, nose, lips, arms, legs, and toes, finger rings have always occupied the most important and significant place among such ornaments. From the earliest period of civilized relationships the finger ring was a convenient means for carrying the signet of its wearer. Fig. 2 shows a form of betrothal ring called a gimmel, or linked ring, which was used in later times; the upper figure shows the three parts brought together, the lower figures the parts separately."&mdash;(Charles Leonard-Stuart, 1911)

Ring

"A Ring is any circle or section of a cylinder. Rings of gold, silver, and of other metals and materials…

An illustration of a ring (circle within circle), with diameters of 3a-7 and 6a+9. Illustration could be used to calculate area.

Ring Made of Circles With Diameters 3a-7 and 6a+9

An illustration of a ring (circle within circle), with diameters of 3a-7 and 6a+9. Illustration could…

"The common snake of Europe... frequents woods, bogs, and other sheltered situations in the vicinity of water." &mdash; Goodrich, 1859

Common ring-snake

"The common snake of Europe... frequents woods, bogs, and other sheltered situations in the vicinity…

The rings or still rings is an artistic gymnastics apparatus. It is only used by male gymnasts.

Rings

The rings or still rings is an artistic gymnastics apparatus. It is only used by male gymnasts.

This is the ring setting for ring jewelry, or a circular band worn as a type of ornamental jewelry around a finger.

Ring Setting

This is the ring setting for ring jewelry, or a circular band worn as a type of ornamental jewelry around…

"A signet ring has a square revolving bezel on which are four serpents interlaced." &mdash;The Encyclopedia Britannica, 1910

Signet Ring

"A signet ring has a square revolving bezel on which are four serpents interlaced." —The Encyclopedia…

"Figure of a fallen warrior, represented among the sculptures now at Munich, belonging to the temple in Aegina. In consequence of the bending of the knees, the greaves are seen to project a little above them. The statue also shows very distinctly the ankle-rings." &mdash; Anthon, 1891

Fallen soldier

"Figure of a fallen warrior, represented among the sculptures now at Munich, belonging to the temple…

"A number of rings arranged round a centre, so as to represent a sphere; used to illustrate the relative positions of the ecliptic, equator, etc., of the celestial sphere." &mdash; Williams, 1889

Armillary sphere

"A number of rings arranged round a centre, so as to represent a sphere; used to illustrate the relative…

Three spring-balances hooked together around a small ring.

Spring-balances

Three spring-balances hooked together around a small ring.