Search for "circular rosette" | ClipArt ETC

Color flag of Anguilla. Blue, with the flag of the UK in the upper hoist-side quadrant and the Anguillan coat of arms centered in the outer half of the flag; the coat of arms depicts three orange dolphins in an interlocking circular design on a white background with blue wavy water below.

Flag of Anguilla, 2009

Color flag of Anguilla. Blue, with the flag of the UK in the upper hoist-side quadrant and the Anguillan…

Black and white outline flag of Anguilla. Blue, with the flag of the UK in the upper hoist-side quadrant and the Anguillan coat of arms centered in the outer half of the flag; the coat of arms depicts three orange dolphins in an interlocking circular design on a white background with blue wavy water below

Flag of Anguilla, 2009

Black and white outline flag of Anguilla. Blue, with the flag of the UK in the upper hoist-side quadrant…

The Wimshurst Machine is an electrostatic device to generate high voltages. "It consists of two circular glass plates, mounted on a common spindle, and capable of rotation in opposite directions with equal speeds. Each plate carries twelve or sixteen strips of thin sheet-metal, fixed radially at regular intervals apart ... At the extremities of the horizontal diameter of the plates the main conductors are placed, insulated on glass or vulcanite pillars." -Hazeltine, 1894

Wimshurst Machine

The Wimshurst Machine is an electrostatic device to generate high voltages. "It consists of two circular…

A mascle is a voided lozenge-- that is, a lozenge with a lozenge-shaped hole in the middle-- and the rarer rustre is a lozenge containing a circular hole. A field covered in a pattern of lozenges is described as lozengy; similar fields of mascles are masculy, and fusils, fusily.

Mascle

A mascle is a voided lozenge-- that is, a lozenge with a lozenge-shaped hole in the middle-- and the…

Paperhanger's Wheel Knife

The paperhanger's wheel knife is also referred to as the casing wheel. It is a circular cutter mounted…

Paperhanger's Wheel Knife

The paperhanger's wheel knife is also referred to as the casing wheel. It is a circular cutter mounted…

Paperhanger's Wheel Knife

The paperhanger's wheel knife is also referred to as the casing wheel. It is a circular cutter mounted…

Paperhanger's Wheel Knife

The paperhanger's wheel knife is also referred to as the casing wheel. It is a circular cutter mounted…

Paperhanger's Wheel Knife

The paperhanger's wheel knife is also referred to as the casing wheel. It is a circular cutter mounted…

Paperhanger's Wheel Knife

The paperhanger's wheel knife is also referred to as the casing wheel. It is a circular cutter mounted…

Paperhanger's Wheel Knife

The paperhanger's wheel knife is also referred to as the casing wheel. It is a circular cutter mounted…

Paperhanger's Wheel Knife

The paperhanger's wheel knife is also referred to as the casing wheel. It is a circular cutter mounted…

"The first change in the parent-cell is that by which it becomes broken up into a mass of cells, each of which is just like itself. This process is called segmentation of the vitellus; each one of the numerous resulting cells is called a cleavage-cell. The nucleus of the parent-cell divides into two; each attracts its half of the yelk; the halves furrow apart and there are now two cleavage cells in place of the one parent-cell a furrow at right angles to the first, and redivision of the nuclei; results in four cleavage-cells. Radiating furrows intermediate to the first two bisect the four cells, and would render eight cells, were not these simultaneously doubled by a circular furrow which cleaves each, with the result of sixteen cleavage-cells. So the subdivision goes on until the parent-cell becomes a mass of cells. This particular kind of cleavage, by radiating and concentric furrowing, is called discoidal, and the resulting heap of little cells assumes the figure of a thin, flat, circular disc. Segmentation of the vitellus, in whatever manner it may go on, results in a mulberry-like mass of cleavage-cells; and the original cytula has become what is called a morula. This process is shown closely here." Elliot Coues, 1884

The Segmentation of the Vitellus

"The first change in the parent-cell is that by which it becomes broken up into a mass of cells, each…

"Picicorvus. American Nutcracker. General characteristics of the European Nucifraga. Bill slenderer, more acute, with more regularly curved culmen and commissure, and straight instead of convex and ascending gonys as a whole somewhat decurved. Nostrils circular, concealed by a full tuft of plumules. Wings long and pointed, folding to the end of the tail; 5th quill longest; 4th, 3d, 6th little less; 2d much shorter, 1st not half as long as 5th. Tail little over half as long as wing, little rounded. Tarsus shorter than middle toe and claw; the envelope divided into small plates on the sides behind the bottom. Claws very large, strong, acute and much curved, especially that of the hind toe; the lateral reaching beyond base of the middle claw. Coloration peculiar; gray, with black-and-white wings and tail. Habits much the same as those of Nucifraga; alpine and sub-boreal, pinicoline, and pinivorous. One species, confined to West Amer." Elliot Coues, 1884

American Nutcracker

"Picicorvus. American Nutcracker. General characteristics of the European Nucifraga. Bill slenderer,…

"A method of decoration is peculiar to these buildings which appears to have been borrowed from Byzantine models. Fine marbles of various colors, of which red porphyry and green serpentine are the most frequent, are inserted in circular and angular panels and borderings, and form a sort of mosaic-work. This style of ornamentation is employed both in churches and palaces, and gives a peculiarly rich and elegant appearance to the façades. Another peculiarity which was borrowed from the Byzantine style consists in the employment of semi-circular gables, both in churches, as in the case of the Santa Maria dei Miracoli, and also in public places, of which the Scuola di San Marco is a brilliant example."

Scuola di San Marco

"A method of decoration is peculiar to these buildings which appears to have been borrowed from Byzantine…

"Colaptes auratus. Golden-winged Woodpecker. Pigeon Woodpecker. Flicker. Yucker. High-holder. Back and exposed surfaces of wing-coverts and secondaries olive-brown with numerous black bars. Rump snowy-white; upper tail-coverts white, mixed with black. Primaries blackish, with golden shafts, and glossed with golden underneath, at their bases paler and more tawny yellow. Tail-feathers above black, their shafts and under surfaces golden, blackened at ends, the outermost with a few touches of yellow or white. Top of head, with back and sides of neck, ash, with a scarlet nuchel band (in both sexes). Sides of head, whole chin, throat, and fore-breast lilac-brown, with broad black cheek patches, these 'moustaches' wanting usually in the female. A broad black pectoral semi-lune. Other under parts shading from a lighter shade of the color of the breast into creamy-yellow, marked with numerous circular black spots. Bill and feet dark plumbeous. Iris brown." Elliot Coues, 1884

Flicker

"Colaptes auratus. Golden-winged Woodpecker. Pigeon Woodpecker. Flicker. Yucker. High-holder. Back and…

"Bubo virginianus. Great Horned Owl. Hoot Owl. Cat Owl. Distinguished by its large size and conspicuous ear-tufts, our other species of similar stature being tuftless or nearly so. Plumage varying interminably, no concise description meeting all its phases. A white collar on the throat is the most constant color-mark. On the upper parts, the under-plumage tawny, but so overlaid with course mottling of blackish and white, that it shows chiefly on the head, nape, and scapulars; the mottling chiefly transverse, and resolving into 7-9 continuous or broken bars on the wings and tail. Under parts white, indefinitely tawny-tinged, and for the most part barred crosswise with blackish, changing on the fore breast to ragged and rather lengthwise blotches. Feathering of feet nearly plain tawny. Ear-tufts black and tawny; a dark mark over eye; border of the facial disc black, the face white or tawny, but the feathers mostly black shafted. Bill and claws black; iris yellow; pupil always circular; when fully dilated as large as a finger-ring, contractile to the size of a pea." Elliot Coues, 1884

Great Horned Owl

"Bubo virginianus. Great Horned Owl. Hoot Owl. Cat Owl. Distinguished by its large size and conspicuous…

"Nyctala - Saw-whet Owls. Skull and ear-parts highly unsymmetrical, the the latter of great size, and fully operculate. Head very large (as in Strix), without plumicorns; facial disc complete, with centric eye. Nostril at edge of the cere, which is inflated or not. Tail from 1/2 to 2/3rds as long as the wing, rounded. Third and 4th primaries longest; 1st quite short; 2 or 3 emarginate on inner webs. Feet thickly and closely feathered to the claws. In this interesting genus the ear-parts are of great size, and reach the extreme of asymmetry, the whole skull seeming misshapen." Glaucidium. Gnome Owls. Sparrow Owls. Pygmy owls. Size very small. Head perfectly smooth; no plumicorns; ear-parts small, non-operculate; facial disc very incomplete, the eye not centric. Nostril circular, opening in the tumid cere; bill robust. Tarsus fully and closely feathered, but toes only bristly for the most part. Wings short and much rounded, the 4th primary longest, the 1st quite short, the 3 outer ones emarginate, and next one or two sinuate. Tail long, about 3/4ths as long as the wing, even or nearly so. Claws strong, much curved. A large genus of very small owls, mostly of tropical countries. The numerous species, chiefly of warm parts of America, are in dire confusion, but the only two known to inhabit N. Am. are well determined. The plumage of many or most species is dichromatic, as in Scops, there being a red and a gray phase independently of age, season, or sex; but the red is not known to occur in our G. gnoma. The upper parts are marked with spots or lines; bars, or rows of spots, cross the wings and tail; the under parts are streaked; there is a cervical collar." Elliot Coues, 1884

Saw-whet and Sparrow Owls

"Nyctala - Saw-whet Owls. Skull and ear-parts highly unsymmetrical, the the latter of great size, and…

"Falcons. Bill furnished with a sharp tooth and notch near the end of the cutting edge of the upper mandible (sometimes two such teeth), and the end of under mandible truncated, with notch near the tip. Nostrils circular, high in the cere, with a prominent central tubercle. Inter-nasal septum extensively ossified. Palate with a median keel anteriorly. Superciliary shied prominent, in one large piece. Shoulder-joint strengthened by union of scapular process of the coracoid with the clavicle as in Micrastur, Herpetothers, and the Polyborinae alone of Flaconidae. Wings strong, long, and pointed, with rigid and usually straight and tapering flight-feathers; the tip formed by the 2d and 3d quills, supported nearly to their ends by the 1st and the 4th, both of which are longer then the 5th; only one or two outer primaries emarginate on inner webs near the end. Tail short and stiff, with more or less tapering rectrices. Feet strong, rather short, the tarsus of less length than the tibia, feathered more or less extensively, elsewhere irregularly reculate in small pattern varying with the genera or subgenera; never scutellate in single series before or behind. Middle toe very long; talons very short." Elliot Coues, 1884

Falcons

"Falcons. Bill furnished with a sharp tooth and notch near the end of the cutting edge of the upper…

"Tringoides macularius. Spotted Sandpiper. Above, silken ashen-olive (quaker-color- as in our cuckoos) with a coppery lustre, finely varied with blackish, in streaks on head and neck, elsewhere in wavy or otherwise irregular cross-bars. line over eye, and entire under parts, pure white, with numerous sharp circular black spots, larger and more crowded in the female than in the male. Secondaries. and their coverts broadly white-tipped; some white feathers along bend of wing; axillars and lining of wings white, the latter with an oblique dusky bar. Primaries and most of the secondaries brownish-black, with brown shafts and large white basal spaces, concealed in the folded wing, conspicuous in flight. Upper tail-coverts and middle tail-feathers like back; lateral ones successively acquiring white tips; outer with several incomplete white bars. Feet pinkish-white, drying yellowish. Bill flesh-color, black-tipped; sometimes much of culmen dusky; sometimes much of under mandible orange." Elliot Coues, 1884

Spotted Sandpiper

"Tringoides macularius. Spotted Sandpiper. Above, silken ashen-olive (quaker-color- as in our cuckoos)…

"Querquedula (N.) carolinensis. American Green-winged Teal. Bill black; feet bluish-gray: iris brown. A white crescent in front of wing. Head and upper neck rich chestnut, blackening on chin, with a glossy green patch behind each eye blackening on its lower border and on the nape where it meets its fellow among the lengthened feathers of the parts, bordered below by a more or less evident whitish line, which may often be traced to the angle of the mouth. Upper parts and flanks waved with narrow black bars on a whitish ground. Under parts white, becoming, becoming buff or fawn-colored on breast, nebulated with gray, on the breast with numerous sharp circular black spots; fore neck and sides of breast waved like the upper parts. Crissum black, with a buff or creamy patch on each side. Primaries and wing-coverts leaden gray; speculum velvety purplish-black on outer half, the inner half rich green; bordered in front with chestnut, fawn or whitish tips of the greater coverts, behind by white tips of secondaries, interiorly with purplish-black stripes on the outer webs of the lengthened secondaries." Elliot Coues, 1884

American Green-winged Teal

"Querquedula (N.) carolinensis. American Green-winged Teal. Bill black; feet bluish-gray: iris brown.…

The Tomb of Atreus also known as the Treasury of Atreus is a tomb located in Mycenae, Greece built between 1250 and 1300 B.C. The face of the tomb consists of columns and has a triangle above the doorway. The tomb has an interior that is formed of a semi-underground circular room with a beehive tomb, also known as the tholos.

Tomb of Atreus

The Tomb of Atreus also known as the Treasury of Atreus is a tomb located in Mycenae, Greece built between…

The pantheon at Rome is a temple that was built to all the gods of Ancient Rome. It was built by Marcus Agrippa Roman statesman, general, and son-in-law to Emperor Caesar Augustus. The structure has a circular body with columns and a dome that covers the ceiling.

The Pantheon at Rome

The pantheon at Rome is a temple that was built to all the gods of Ancient Rome. It was built by Marcus…

Stonehenge is a pre-historic monument located in Wiltshire, England. It is one of the most famous monuments in the world, with large standing stones that are placed in a circular form. It also was a burial site with hundreds of burial mounds.

Stonehenge

Stonehenge is a pre-historic monument located in Wiltshire, England. It is one of the most famous monuments…

"Fratercula arctica. Common Puffin. Sea Parrot. Crown of head grayish-black, sharply defined against color of sides of head, separated by a slight ashy cervical collar from the dark color of the upper parts. Sides of head, with chin and throat, ashy-white nearly white between eyes and bill, with a dark ashy patch on side of throat. Upper parts glossy blue-black, continuous with a broad collar around the neck in front, not extending to the bill. A narrow line of white along border of fore-arm. Under parts from the neck pure white, the long feathers of the sides and flanks blackish. Under surface of wings pearly-gray; inner webs of primaries and secondaries grayish-brown, the shafts brown, with black ends and whitish bases. Iris brown. Eyelids vermilion-red, the excrescences grayish-blue. Basal collar of bill and first ridge dull yellowish; nasal saddle and corresponding shoe of lower mandible grayish-blue; rest of bill vermilion-red, the tip of the lower mandible and two terminal grooves often yellowish; rosette of mouth orange-yellow; feet coral or vermilion-red; claws black." Elliot Coues, 1884

Puffin

"Fratercula arctica. Common Puffin. Sea Parrot. Crown of head grayish-black, sharply defined against…

"Fratercula corniculata Horned Masking Puffin. Crown of head grayish-black, narrowing to a point at base of culmen. Sindes of head white; the postocular furrow and sides of lower jaw ashy. A distinct narrow line of white along edge of fore-arm. Entire upper parts glossy blue-black; a sootier shade of black encircling the fore-neck, running forward on throat to bill. Other under parts white, except a few elongated blackish feathers on sides of flanks. Lining of wings pearly-ash. Bill entirely vermilion-red, even the basal collar; edges of eyelids red; excrescences of eyelids bluish-gray; iris brown; feet orange-red, the webs tinged with vermilion; claws brownish-black; rosette of mouth bright yellow-orange. Lunda cirrata. Tufted Puffin. Crests about 4 inches long, straw-yellow, some of the posterior feathers black at base; these bundles of silky, glossy feathers with very delicate shafts and loosened webs; they chiefly sprout from what corresponds to the furrow in the plumage of F. artica. Face white, broadly of this color on sides of head to beyond eyes (as far as the crests), narrowly across forehead and chin, the bill being thus entirely surrounded by white. Crown between the crests, and entire upper parts, excepting the extreme forehead and a line along the forearm, glossy blue-black. Entire under parts, excepting extreme chin, and including sides of hind head and sides of neck, sooty brownish-black, more grayish on the belly, the lining of wings smoky-gray, the under tail-coverts quite black. Wings and tail black, their inner webs brownish-black, the shaft of the primary whitish underneath near base. Bill, feet, and eye-ring vermilion-red; the basil parts of the bill when about to desquamate showing more yellowish or enamel color, or even showing the living color of the subjacent membrane. Rosette of mouth yellow. Claws black." Elliot Coues, 1884

Horned and Tufted Puffins

"Fratercula corniculata Horned Masking Puffin. Crown of head grayish-black, narrowing to a point at…

"Lunda cirrata. Tufted Puffin. Crests about 4 inches long, straw-yellow, some of the posterior feathers black at base; these bundles of silky, glossy feathers with very delicate shafts and loosened webs; they chiefly sprout from what corresponds to the furrow in the plumage of F. artica. Face white, broadly of this color on sides of head to beyond eyes (as far as the crests), narrowly across forehead and chin, the bill being thus entirely surrounded by white. Crown between the crests, and entire upper parts, excepting the extreme forehead and a line along the forearm, glossy blue-black. Entire under parts, excepting extreme chin, and including sides of hind head and sides of neck, sooty brownish-black, more grayish on the belly, the lining of wings smoky-gray, the under tail-coverts quite black. Wings and tail black, their inner webs brownish-black, the shaft of the primary whitish underneath near base. Bill, feet, and eye-ring vermilion-red; the basil parts of the bill when about to desquamate showing more yellowish or enamel color, or even showing the living color of the subjacent membrane. Rosette of mouth yellow. Claws black." Elliot Coues, 1884

Tufted Puffin Bill

"Lunda cirrata. Tufted Puffin. Crests about 4 inches long, straw-yellow, some of the posterior feathers…

"Simorhynchus cristatellus. Crested Auk. Snub-nosed Auk. Bill fundamentally small and simple, compressed-conic, with convex culmen and little sinuate horizontal commissure; but in the breeding season developing several corneous appendages, which alter its shape greatly, make it singularly irregular, and modify even the outline of the feathers at its base. These accessory pieces are: a nasal plate, filling the nasal fossa, separate from its fellow of the opposite side; a subnasal strip prolonged on the cutting edge of the upper mandibles backwards from the nostrils; a rosette-like plate at base of upper mandible just over angle of the mouth; a large shoe encasing the posterior part of the under mandible; the latter single, the other three pieces in pairs, making seven in all which are moulted; all these elements vermilion or coral-red; end of the bill enamel-yellow. (Before acquiring these growths the young bird is tetraculus of authors; the adult in winter, after shedding the, is dubius.)" Elliot Coues, 1884

Crested Auk in Summer

"Simorhynchus cristatellus. Crested Auk. Snub-nosed Auk. Bill fundamentally small and simple, compressed-conic,…

"Alle. Sea Dove. Size small. Bill very short, stout, and obtuse, as well as high at base, the sides of both mandibles turgid, the edge of the upper much infected; culmen very convex; rictus ample, decurved at end; gonys straight, very short, the mandibular rami correspondingly long, and widely divaricated; nasal fossae short, wide, deep, partly, patly feathered. Nostrils sub basal, more nearly circular than in any other genus excepting the next." Elliot Coues, 1884

Sea Dove Bill

"Alle. Sea Dove. Size small. Bill very short, stout, and obtuse, as well as high at base, the sides…

"Synthliborhamphus antiquus. Nipper-nosed Murrelet. Bill somewhat as in Brachyrhamphus, but stouter and deeper for its length; greatly compressed throughout, its depth at base about half as much as length of culmen; culmen moderately convex, gonys ascending. Nostrils sub-basal, broadly oval or nearly circular; nasal fossae small and shallow, feathered to nostrils." Elliot Coues, 1884

Black-throated Murrelet

"Synthliborhamphus antiquus. Nipper-nosed Murrelet. Bill somewhat as in Brachyrhamphus, but stouter…

A French Curve is used by connecting sufficient points to sketch a curve. The sketch should be line lightly with pencil, without losing points, until the a smooth line is drawn.

Using French Curve

A French Curve is used by connecting sufficient points to sketch a curve. The sketch should be line…

"Join AB and BC, bisect AB and BC by perpendiculars. Their intersection will be the center of the required circle." —French, 1911

Draw Circular Arc Through Three Given Points

"Join AB and BC, bisect AB and BC by perpendiculars. Their intersection will be the center of the required…

This banjo has a rim with straining wires stretched across the head, held together by three adjustable screw pins. The end of the instrument has tuning pegs which are located at the end of the neck shaped after an oblique shape. The banjo shown is an instrument of the guitar family that has a long neck and circular body.

Rendered View of a Banjo

This banjo has a rim with straining wires stretched across the head, held together by three adjustable…

A wheel is a circular device that is capable of rotating on its axis, facilitating movement and transportation.

Side View of a Vehicle Wheel

A wheel is a circular device that is capable of rotating on its axis, facilitating movement and transportation.

A circular frame of hard material that may be solid, partly solid, or spoked and that is capable of turning on an axle.

Sheet Metal Web Wheel

A circular frame of hard material that may be solid, partly solid, or spoked and that is capable of…

A wheel is a circular device that is capable of rotating on its axis, facilitating movement or transportation whilst supporting a load or performing labor in machines.

Antique Vehicle Wheel

A wheel is a circular device that is capable of rotating on its axis, facilitating movement or transportation…

The slide rule, also known colloquially as a slip stick, which is a mechanical analog computer. The slide rule is used primarily for multiplication and division, and also for scientific functions such as roots, logarithms and trigonometry, but is not normally used for addition or subtraction.Slide rules come in a diverse range of styles and generally appear in a linear or circular form with a standardized set of markings essential to performing mathematical computations. Slide rules manufactured for specialized fields such as aviation or finance typically feature additional scales that aid in calculations common to that field.

Marker for Slide Rules

The slide rule, also known colloquially as a slip stick, which is a mechanical analog computer. The…

A wheel is a circular device that is capable of rotating on its axis, facilitating movement or transportation whilst supporting a load or performing labor in machines. Common examples are found in transport applications.

12 Spoke Vehicle Wheel

A wheel is a circular device that is capable of rotating on its axis, facilitating movement or transportation…

A face plate for milling on a lathe. The circular blades used for milling can be adjusted by using loosening or tightening the nuts for different cuts.

Relieving Milling Cutters Lathe

A face plate for milling on a lathe. The circular blades used for milling can be adjusted by using loosening…

A milling ball bearing to create a small circular hole, as shown in (A). The milling ball bearing has a spherical tip with groves creating holes.

Milling Ball Bearings

A milling ball bearing to create a small circular hole, as shown in (A). The milling ball bearing has…

A wheel is a circular device that is capable of rotating on its axis, facilitating movement or transportation while supporting a load, or performing labor in machines. Common examples are found in transport applications.

Eight Spoke Wheel

A wheel is a circular device that is capable of rotating on its axis, facilitating movement or transportation…

Binder posts are folders in which punched pieces of paper may be held by means of clamps running through the holes in the paper. These retainers are usually spring-loaded, frequently circular, and may have additional latching systems.

Flexible Binder Post

Binder posts are folders in which punched pieces of paper may be held by means of clamps running through…

"With a 45 degree triangle draw lines AC and BD through the center and construct three squares. Set the bow—pencil to a radius of 3∕8' and describe a circular arc in the corner of each square just touching, but not intersecting, the sides of the square. Ink the circular arcs first." —Anthony, 1904

Mechanical Drawing Exercise Three Inscribed Squares with Rounded Corners using Triangle and Bow

"With a 45 degree triangle draw lines AC and BD through the center and construct three squares. Set…

Circular Body Measure Tool

This is a tool used to measure circular bodies, very similar to how current calipers work. This tool…

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 petrographic light microscope used to identify thin layered rocks and minerals. The microscope have two polarizer filter beneath the sample, with circular rotating stage.

Petrographical Light Microscope with Mirror and Eyepieces

A petrographic light microscope used to identify thin layered rocks and minerals. The microscope have…

A six cylinder fire engine with Gwynne centrifugal pump by Dennis Brothers Ltd. The engine have a retractable ladder, a bell in the front passenger, and hoses to connect to the pump. The pump is constructed with a turning circular disc inside to force the water flow out of the source.

Dennis Six Cylinder Fire Engine with Centrifugal Pump

A six cylinder fire engine with Gwynne centrifugal pump by Dennis Brothers Ltd. The engine have a retractable…

"As the eccentric turns in the strap, the point O moves in the dotted circle around O', and the point A also moves in a circle. When half a revolution is accomplished the point O will be at O", the Point A will be at A", and the eccentric strap and valve rod will be in the position indicated by the dotted lines." —Derr, 1911

Shaft in an Eccentric Motion from Steam Engine

"As the eccentric turns in the strap, the point O moves in the dotted circle around O', and the point…

"An eccentric on the main shaft gives an oscillating motion to a circular disc called the wrist plate, pivoted at the center of the cylinder. It transmits motion to each of the four valves through adjustable links known as steam rods or exhaust rods, according to whether they move the admission or exhaust valves." —Derr, 1911

Steam Engine with Reynolds Corliss Gear

"An eccentric on the main shaft gives an oscillating motion to a circular disc called the wrist plate,…

An illustration of a Corliss steam engine to generate 5000 kW of electricity. The turbines to create electricity is located on the right hand side and the large circular casing in the left. The steam enters the system at a high pressure to turn the turbines.

5000 kW Corliss and Curtis Steam Engine for Electric Generation

An illustration of a Corliss steam engine to generate 5000 kW of electricity. The turbines to create…

"The upper bearing with dowel—pins and key fit into corresponding dowel holes and key—way in the bottom of the shaft, and rotate with it. When the oil is supplied to the bearing, under a high pressure, it fills the central circular space between the blocks and forces them slightly apart. The oil then escapes between the annular edges of these two blocks and is collected into a drain and returned to the original supply." —Derr, 1911

Cross Sectional View of Curtis Turbine Step Bearing

"The upper bearing with dowel—pins and key fit into corresponding dowel holes and key—way…

The circular outer part of a wheel, furthest from the axle.

Detachable Rim

The circular outer part of a wheel, furthest from the axle.

Caps, or Closures, are used to seal the openings of bottles of many types. They can be small circular pieces of metal, usually steel, with plastic backings, and for plastic bottles a plastic cap is used instead.

Bottle Cap

Caps, or Closures, are used to seal the openings of bottles of many types. They can be small circular…

a top, or spinning top, is a toy that can be spun on an axis, balancing on a point. This motion is produced by holding the axis firmly while pulling a string. An internal weight then rotates, producing an overall circular motion.

Spinning Top

a top, or spinning top, is a toy that can be spun on an axis, balancing on a point. This motion is produced…

Crank Mechanism

An arm attached at right angles to a rotating shaft by which reciprocating motion is imparted to or…

Plant featuring a basal rosette of leaves.

Streptocarpus Kewensis

Plant featuring a basal rosette of leaves.

A nearly circular leaf.

Orbicular Leaf

A nearly circular leaf.

A small, ornate rosette.

Ornate Stamp

A small, ornate rosette.

Stonehenge

An ancient monument located in England, composed of earthworks surrounding a circular setting of large…

"The Rustre differs from the mascle in that the perforation of the device is circular and not throughout."—Aveling, 1891

Rustre Shield

"The Rustre differs from the mascle in that the perforation of the device is circular and not throughout."—Aveling,…