ClipArt ETC
Arm of humans; h Humerus or bone of upper arm; r and u Radius and Ulna, or bones of the forearm; c Carpus, or bones of the wrist; m Metacarpus, or bones of the root of the hand; p Phalanges, or bones of the fingers.

Bones of Arm

Arm of humans; h Humerus or bone of upper arm; r and u Radius and Ulna, or bones of the forearm; c Carpus,…

Wing of Bird; h Humerus or bone of upper arm; r and u Radius and Ulna, or bones of the forearm; c Carpus, or bones of the wrist; m Metacarpus, or bones of the root of the hand; p Phalanges, or bones of the fingers.

bones of arm

Wing of Bird; h Humerus or bone of upper arm; r and u Radius and Ulna, or bones of the forearm; c Carpus,…

The forelimb of chimpanzee. (c) collar bone; (s) shoulder blade; (h) humerus; (r) radius; (u) ulna; (d) bones of wrist; (m) bones of hand; (p) bones of fingers.

Chimp Limb

The forelimb of chimpanzee. (c) collar bone; (s) shoulder blade; (h) humerus; (r) radius; (u) ulna;…

"The <em>ulna</em>, or elbow bone, is the larger of these two bones. It is joined to the humerus by a hinge joint at the elbow. It is on the same side as the little finger. The <em>radius</em>, queerly named because it is supposed to resemble one of the spokes of a wheel, is the long, slightly curved, outer bone fo the forearm. It is on the same side as the thumb. Its upper end is fastened both to the ulna and the humerus." — Blaisedell, 1904

Ulna and Radius

"The ulna, or elbow bone, is the larger of these two bones. It is joined to the humerus by…

"Showing how the Ends of the Bones are shaped to form the Elbow Joint. The cut ends of a few ligaments are seen." — Blaisedell, 1904

Elbow Joint

"Showing how the Ends of the Bones are shaped to form the Elbow Joint. The cut ends of a few ligaments…

"When a bone is broken, blood trickles out between the injured parts, and afterwards gives place to a sticky, watery fluid, which gradually becomes thicker, like a syrup or jelly. This is slowly replaced by a new bone structure and forms a kind of cement to gold together the broken ends." — Blaisedell, 1904

Broken Radius

"When a bone is broken, blood trickles out between the injured parts, and afterwards gives place to…

"Showing how an improvised apparatus may be used for a broken radius. This temporary dressing consists of two pieces of oak bark for splints, with grass for padding, and is secured in place by a boy's long stocking and a pocket handkerchief." &mdash; Blaisedell, 1904

Boy with dressing

"Showing how an improvised apparatus may be used for a broken radius. This temporary dressing consists…

A roman moulding, called a <em>Torus.</em> It is composed of a semicircle and a fillet. The smicircle projects from the fillet an amount equal to its radius. The concave addition above the fillet and the projection below the half round shows a combination of mouldings used in the base of a <em>Doric Column</em>.

Torus

A roman moulding, called a Torus. It is composed of a semicircle and a fillet. The smicircle…

A roman moulding, called a <em>Scotia.</em> It consists of two quarter circles one of which has a radius equal to twice the radius of the other. The centers of both arcs must be on the same horizontal line. It is generally applied in the bases of columns.

Scotia

A roman moulding, called a Scotia. It consists of two quarter circles one of which has a radius…

Skeleton of the cow. 1: Frontal bone of the head. 2: Upper jaw, superior maxillary. 3: Lower jaw, inferior maxillary. 4: Cervical vertebrae. 5: Dorsal vertebrae. 6: Lumbar vertebrae. 7: Sacral vertebrae. 8: Caudal vertebrae. 9: Scapula. 10: Humerus 11: Radius and ulna. 12: Carpus. 13: Metacarpus. 14: Phalanges (toes). 15: Femur. 16: Tibia. 17: Tarsus. 18: Metatarsus. 19: Phalanges.

Cow Skeleton

Skeleton of the cow. 1: Frontal bone of the head. 2: Upper jaw, superior maxillary. 3: Lower jaw, inferior…

Skeleton of a bird. 1: The head. 2: Cervical Vertebrae. 3: Dorsal and lumbar vertebrae. 4: Scapula. 5: Clavicle. 6: Coracoid bone. 7: Sternum. 8: Humerus. 9: Radius. 10: Ulna. 11: Carpus. 12: Metacarpus. 13: Phalanges (fingers). 14: Femur. 15: Tibia. 16: Fibula. 17: Tarsus. 18: Metatarsus. 19: Phalanges (toes).

Bird Skeleton

Skeleton of a bird. 1: The head. 2: Cervical Vertebrae. 3: Dorsal and lumbar vertebrae. 4: Scapula.…

This diagram shows the bones of the right fore-arm. H, the humerus; R, the radius; and U, the ulna.

Forearm Bones

This diagram shows the bones of the right fore-arm. H, the humerus; R, the radius; and U, the ulna.

An anterior view of the radius and ulna.

Radius and Ulna

An anterior view of the radius and ulna.

A posterior view of the radius and ulna.

Radius and Ulna

A posterior view of the radius and ulna.

The plan of development of the radius for three centuries.

Radius

The plan of development of the radius for three centuries.

A view of the left scaphoid seen from behind.

Left Scaphoid

A view of the left scaphoid seen from behind.

A view of the left scaphoid seen from in front.

Left Scaphoid

A view of the left scaphoid seen from in front.

A view of the left semilunar from the external surface.

Left Semilunar

A view of the left semilunar from the external surface.

A anterior view of the ligaments of the wrist and hand.

Hand Ligaments

A anterior view of the ligaments of the wrist and hand.

A posterior view of the ligaments of the wrist and hand.

Hand Ligaments

A posterior view of the ligaments of the wrist and hand.

"A current is caused to pass from the mercury through C along the radius of the disc A through the field of magnetic force due to the horse-shoe magnet NO. The result is that the wheel rotates in the direction indicated by the arrow." &mdash; Encyclopedia Britannica, 1893

Barlow Apparatus

"A current is caused to pass from the mercury through C along the radius of the disc A through the field…

The radial bone in the human arm.

Radius

The radial bone in the human arm.

"The blocks, which are technically known as voussoirs, should be of a wedge shape, the center or top block being the keystone A; the lower blocks B B which rest on the supporting pier are the springers, the upper surface of which is called the skewback, C C; the side blocks, as D, are termed the hauches. The lower surface or soffit of the arch is the intrados, E, and the upper surface the entrados, F. The rise of the arch is the distance from the springing to the soffit, G, the width between the springers is called the span, H, and the radius I. The triangular spaces between the arches are termed spandrils, K." &mdash; The Encyclopedia Britannica, 1910

Arch

"The blocks, which are technically known as voussoirs, should be of a wedge shape, the center or top…

"Equilateral pointed arches, described from two centers, the radius being the whole width of the arch." &mdash; The Encyclopedia Britannica, 1910

Equilateral Arch

"Equilateral pointed arches, described from two centers, the radius being the whole width of the arch."…

"Skeleton of Egyptian Vulture. (Neophron percnopterus), to show bones of bird. a, post-orbital process; b, lower jaw; c, cervical vertebra; co, coracoid bone; d, humerus; e, radius; f, ulna; g, metacarpus; h, second phalanx of chief digit of wing; h, phalanges of lower digit; h'', first phalanx of chief digit; i, clavicle; k, sternum; l, pelvis; m, coccyx; n, femur; o, tibia; p, tarso-metatarsus; q, phalanges of foot." &mdash; Winston's Encyclopedia, 1919

Vulture Skeleton

"Skeleton of Egyptian Vulture. (Neophron percnopterus), to show bones of bird. a, post-orbital process;…

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius of curvature of the inner face of an annular lens. The outer face is the same as that of an ordinary annular lens, which the other face, though straight in the vertical, is ground to the required curve in the horizontal plane. The rays f'fc falling upon the lens x converge to the vertical focal plane ff and afterwards diverge through the smaller horizontal angle x'f'x', and so for any other case." —The Encyclopedia Britannica, 1910

Differential Lens

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius…

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius of curvature of the inner face of an annular lens. The outer face is the same as that of an ordinary annular lens, which the other face, though straight in the vertical, is ground to the required curve in the horizontal plane. The rays f'fc falling upon the lens x converge to the vertical focal plane ff and afterwards diverge through the smaller horizontal angle x'f'x', and so for any other case." —The Encyclopedia Britannica, 1910

Differential Lens

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius…

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius of curvature of the inner face of an annular lens. The outer face is the same as that of an ordinary annular lens, which the other face, though straight in the vertical, is ground to the required curve in the horizontal plane. The rays f'fc falling upon the lens x converge to the vertical focal plane ff and afterwards diverge through the smaller horizontal angle x'f'x', and so for any other case." —The Encyclopedia Britannica, 1910

Differential Lens

"Differential Lens.—Horizontal divergence may be obtained to any required amount by varying the radius…

"The bones of the arm. a, humerus; b, ulna; c, radius; d, the carpus; e, the fifth metacarpal; f, the three phalanges of the fifth digit (little finger)." &mdash;Martin, 1917

Arm Bones

"The bones of the arm. a, humerus; b, ulna; c, radius; d, the carpus; e, the fifth metacarpal; f, the…

The upper extremity of the human body. 1: Clavicle; 2: Scapula; 3: Humerus; 4: Ulna; 5: Radius; 6: Carpus; 7: Metacarpal; 8: Phalanges.

Upper Extremity

The upper extremity of the human body. 1: Clavicle; 2: Scapula; 3: Humerus; 4: Ulna; 5: Radius; 6: Carpus;…

"Skeleton and volar Membranes of the Noctule Bat. c, clavicle; h, humerus; r, radius; u, ulna; d1, first digit or pollex; d2, d3, d4, d5, other digits of the manus supporting um, the wing-membrane; m, m, metacarpal bones; ph1, first phalanx; ph2, second phalanx; ph3, third phalanx; am, antebrachial membrane; f, femur; t, tibia; fb, fibula (rudimentary); c, calcaneum or calcar supporting im, the interfemoral membrane; pcl, post-calcaneal lobe." &mdash;The Encyclopedia Britannica, 1903

Noctule Bat

"Skeleton and volar Membranes of the Noctule Bat. c, clavicle; h, humerus; r, radius; u, ulna; d1, first…

"Right fore foot of Indian Elephant. U, ulna; R, radius; c, cunelform; l, lunar; sc, scaphold; u, unciform; m, magnum; td, trapezoid; tm, trapezium; I to V, first to fifth digit." &mdash;The Encyclopedia Britannica, 1903

Elephant Foot

"Right fore foot of Indian Elephant. U, ulna; R, radius; c, cunelform; l, lunar; sc, scaphold; u, unciform;…

Skeleton of the fore limb of the horse. <em>sc</em>, shoulder blade; <em>h</em>, humerus; <em>r</em>, radius; <em>ua</em>, ulna; <em>m</em>, splint bone or fourth metacarpal; <em>p</em>, phalanges.

Fore Limb

Skeleton of the fore limb of the horse. sc, shoulder blade; h, humerus; r,…

1. Frontal bone 2. Parietal bone 3. Coronal Suture 4. Squamous portion of Temporal bone 5. Mastoid process of Temporal bone 6. Zygoma 7. Superior Maxillary Bone 8. Inferior Maxillary Bone 9. Tempero-Maxillary Bone 10. Nasal Bone 11. Orbit 12. Cervical Vertebra 13. First Rib 14. Clavicle 15. Manubrium 16. Body of Sternum 17. Ensiform Process of Sternum 18. Shoulder Blade 19. Acromion Process of Scapula 20. Costal Cartilage 21. Seventh Rib 22. Eighth Rib 23. Twelfth Rib 24. Twelfth Dorsal Vertebra 25. Lumbar Vertebra 26. Head of Humerus 27. Humerus 28. Elbow-Joint 29. Radius 30. Ulna 31. Wrist 32. Metacarpal bone 33.Thumb 34. Phalanges of the Finger 35. Sacrum 36. Ilium 37. Crest of the Ilium 38. Pubic Bone 39. Ischium 40. Sacro-Iliac Symphysis 41. Pubic Symphysis 42. Obturator Foramen 43. Head of Femur 44. Neck of Femur 45. Greater trochanter 46. Femur 47 Patella knee-pan 48. Tibia 49. Fibula 50. External Malleolus 51. Internal Malleolus 52. Os Calcis 53. Tarsus 54. Metatarsal Bone 55. Phalanges of Toes

Skeleton

1. Frontal bone 2. Parietal bone 3. Coronal Suture 4. Squamous portion of Temporal bone 5. Mastoid process…

This illustrates how to determine the force required to turn a connecting rod of a steam engine.

Connecting Rod of a Steam Engine

This illustrates how to determine the force required to turn a connecting rod of a steam engine.

Equal circles inside and tangent to the outside circle, also tangent to each other

Circle to Circle Tangents

Equal circles inside and tangent to the outside circle, also tangent to each other

Draftsman's third method for drawing an ellipse

Ellipse Third Method

Draftsman's third method for drawing an ellipse

Draftsman's fourth method for drawing an ellipse, case 1

Ellipse Fourth Method Case 1

Draftsman's fourth method for drawing an ellipse, case 1

The Human Skeleton. Labels: a, parietal bone; b, frontal; c, cervical vertebrae; d, sternum; e, lumbar vertebrae; f, ulna; g, radius; h, wrist or carpal bones; i, metacarpal bones; k, phalanges; l, tibia; m, fibula; n, tarsal bones; o, metatarsal; p, phalanges; , patella; r, femur; s, haunch (hip) bone; t, humerus; u, clavicle.

The Human Skeleton

The Human Skeleton. Labels: a, parietal bone; b, frontal; c, cervical vertebrae; d, sternum; e, lumbar…

The Ulna and Radius. Labels: 1, radius; 2, ulna; o, olecranon process, on the anterior surface of which are seen the large (gs) and the small (ls) cavities for the reception of the lower end of the humerus and of the head of the radius, respectively; h, head of radius.

The Human Ulna and Radius

The Ulna and Radius. Labels: 1, radius; 2, ulna; o, olecranon process, on the anterior surface of which…

A section across the forearm a short distance below the elbow-joint. R and U, its two supporting bones, the radius and ulna; e, the epidermis, an d, the dermis, of the skin; the latter is continuous below with bands of connective tissue, s, which penetrate between and invest the muscles (I, 2, 3, 4, etc.); n, n, nerves and vessels.

Section Across the Forearm

A section across the forearm a short distance below the elbow-joint. R and U, its two supporting bones,…

The skeleton of the arm and leg. Labels: H, the humerus; Cd, its articular head which fits into the glenoid fossa of the scapula; U, the ulna; R, the radius; O, the olecranon; Fe, the femur; P, the patella; Fi, the fibula; T, the tibia.

Arm and Leg Skeleton

The skeleton of the arm and leg. Labels: H, the humerus; Cd, its articular head which fits into the…

"Considered as a lever, the fulcrum is at the common axis, while the arms of the lever are the radii of the wheel and of the axle. The usual arrangement is to take ac, the radius of the wheel, as the power arm, and bc , the radius of the axle, as the weight arm." -Avery 1895

Wheel and Axle

"Considered as a lever, the fulcrum is at the common axis, while the arms of the lever are the radii…

Demonstration of the movement of a pivot joint. Labels: A, arm in supination (palm uppermost); B, arm in pronation (back of hand upward). H, humerus; R, radius; U, ulna.

Arm Bones

Demonstration of the movement of a pivot joint. Labels: A, arm in supination (palm uppermost); B, arm…

Circle with diameter, radius, arc, chord, and arc.

Circle With Parts

Circle with diameter, radius, arc, chord, and arc.

Illustration of radius drawn to point of contact of a tangent.

Point of Tangency

Illustration of radius drawn to point of contact of a tangent.

Illustration of circle with diameter and segment used to find area.

Circle With Diameter and Segment labeled

Illustration of circle with diameter and segment used to find area.

Illustration of circle with 8 inch diameter.

Circle With 8 inch Diameter

Illustration of circle with 8 inch diameter.

Illustration of circle with 6 inch diameter.

Circle With 6 inch Diameter

Illustration of circle with 6 inch diameter.

Illustration of circle with 10 inch diameter and square.

Circle With 10 inch Diameter and Steel Square

Illustration of circle with 10 inch diameter and square.

Illustration of box filled with pipes.

Circular Pipes in Box

Illustration of box filled with pipes.

Illustration of three circles enclosed in an equilateral triangle.

Circles Enclosed in Equilateral Triangle

Illustration of three circles enclosed in an equilateral triangle.

Illustration of circle with radius of 4000, and triangle with 45 degree angle enclosed.

Circles With Radius 4000 and Enclosed Triangle

Illustration of circle with radius of 4000, and triangle with 45 degree angle enclosed.

Illustration of circle with arc, chord, diameter and radius.

Parts of Circle

Illustration of circle with arc, chord, diameter and radius.

Illustration of large circle and square with 4 smaller circles inside.

Circles Inside of a Square

Illustration of large circle and square with 4 smaller circles inside.

Illustration of ring (small circle in larger concentric circle).

Ring Made of Concentric Circles

Illustration of ring (small circle in larger concentric circle).

Illustration of ring (small circle in larger concentric circle) with piece cut out.

Ring With Piece Cut Out

Illustration of ring (small circle in larger concentric circle) with piece cut out.

Illustration of ring (small circle in larger concentric circle) sprung into place.

Ring Sprung Into Place

Illustration of ring (small circle in larger concentric circle) sprung into place.

Illustration of of construction of a radius when given only a part of the circumference.

Construction of Radius When Given Only a Part of the Circumference

Illustration of of construction of a radius when given only a part of the circumference.

Illustration of of construction of a radius when given only a part of the circumference.

Construction of Radius When Given Only a Part of the Circumference

Illustration of of construction of a radius when given only a part of the circumference.