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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…

Illustration of a hollow decagonal pyramid that has been cut by a plane parallel to the base. The top section has been removed and the remaining section has been turned upside down. It is known as the frustum of the pyramid.

Frustum Of A Decagonal Pyramid

Illustration of a hollow decagonal pyramid that has been cut by a plane parallel to the base. The top…

Illustration of a hollow septagonal/heptagonal pyramid that has been cut by a plane parallel to the base. The top section has been removed and the remaining section has been turned upside down. It is known as the frustum of the pyramid. The hidden edges are shown in this illustration.

Frustum Of A Decagonal Pyramid

Illustration of a hollow septagonal/heptagonal pyramid that has been cut by a plane parallel to the…

"Distrbution of electrification on a charged hollow sphere. If an insulated conductor d be inserted through the opening in the sphere and brought in contact with the interior surface and afterwards carefully removed, it will be found, by testing with the gold leaf electroscope, tat it has recieved no charge. If touched to the outside, however, the conductor will recieve part of the charge." -Hawkins, 1917

Distribution of Charge

"Distrbution of electrification on a charged hollow sphere. If an insulated conductor d be inserted…

"In the forcing-pump atmospheric pressure plays but a small part. There is no valve in the piston c, but the water raised through the suction-pipe a, and the valve g, is forced by each depression of the piston up through the pipe e e, which is furnished with a valve to prevent the return of the fluid." — Wells, 1857

Forcing-Pump

"In the forcing-pump atmospheric pressure plays but a small part. There is no valve in the piston c,…

A adult male being chased by the headless horseman.

Headless Horseman

A adult male being chased by the headless horseman.

Pattern that can be used to make a hollow rectangular prism. Development of hollow rectangular prism.

Development of Hollow Rectangular Prism

Pattern that can be used to make a hollow rectangular prism. Development of hollow rectangular prism.

"It is composed of a hollow ball of glass, or metal, with a graduated scale rising from its upper part, which serves to balance it in the fluid." -Comstock 1850

Hydrometer

"It is composed of a hollow ball of glass, or metal, with a graduated scale rising from its upper part,…

"A mountain and spring, showing how the principle of the syphon operates to produce the effect described. Suppose there is a crevice, or hollow in the rock from a to b, and a narrow fissure leading from it, in the form of the syphon, b c. The water from the rill fe, filling the hollow, up to the line a d, it will then discharge itself through the syphon, and continue to run until the water is exhausted down to the l g of the syphon b, when it will cease. Then the water from the rills continuing to run until the hollow is again filled up to the same line, the syphon again begins to act, and again discharges the contents of the reservoir as before, and thus the spring p, at one moment flows with great violence and the next moment ceases entirely." —Comstock, 1850

Intermitting Spring

"A mountain and spring, showing how the principle of the syphon operates to produce the effect described.…

Illustration of a right octagonal pyramid, with hidden edges shown, that has been cut by a plane parallel to the base. The lower part is known as the frustum.

Octagonal Pyramid Cut By Plane

Illustration of a right octagonal pyramid, with hidden edges shown, that has been cut by a plane parallel…

Illustration of a right octagonal pyramid that has been cut by a plane parallel to the base. The lower part is known as the frustum.

Octagonal Pyramid Cut By Plane

Illustration of a right octagonal pyramid that has been cut by a plane parallel to the base. The lower…

Illustration of a hollow octagonal pyramid that has been cut by a plane parallel to the base. The top section has been removed and the remaining section has been turned upside down. It is known as the frustum of the pyramid.

Frustum Of A Octagonal Pyramid

Illustration of a hollow octagonal pyramid that has been cut by a plane parallel to the base. The top…

"The common pump consists of a hollow tube, the lower part of which, descending into the water, is called the suction-pipe, and the upper part, b, the battel or cylinder; of a spout, s, at the top of the cylinder; of an air-tight priston, which works up and down in the cylinder; and of two valves, both opening upwards, one of which, g, is placed at the top of the suction-pipe, and the other, p, in the piston." — Wells, 1857

Pump

"The common pump consists of a hollow tube, the lower part of which, descending into the water, is called…

Illustration of a hollow right decagonal pyramid. The base is a decagon and the faces are isosceles triangles. The pyramid is inverted, meaning that the vertex is at the bottom and the base is on top.

Inverted Decagonal Pyramid

Illustration of a hollow right decagonal pyramid. The base is a decagon and the faces are isosceles…

Illustration of a hollow right hexagonal pyramid. The base is a hexagon and the faces are isosceles triangles. The pyramid is inverted, meaning that the vertex is at the bottom and the base is on top.

Inverted Hexagonal Pyramid

Illustration of a hollow right hexagonal pyramid. The base is a hexagon and the faces are isosceles…

Illustration of a hollow right nonagonal pyramid. The base is a nonagon and the faces are isosceles triangles. The pyramid is inverted, meaning that the vertex is at the bottom and the base is on top.

Inverted Nonagonal Pyramid

Illustration of a hollow right nonagonal pyramid. The base is a nonagon and the faces are isosceles…

Illustration of a hollow right octagonal pyramid. The base is an octagon and the faces are isosceles triangles. The pyramid is inverted, meaning that the vertex is at the bottom and the base is on top.

Inverted Octagonal Pyramid

Illustration of a hollow right octagonal pyramid. The base is an octagon and the faces are isosceles…

Illustration of a hollow right rectangular pyramid. The base is a rectangle and the faces are isosceles triangles. The pyramid is inverted, meaning that the vertex is at the bottom and the base is on top.

Inverted Rectangular Pyramid

Illustration of a hollow right rectangular pyramid. The base is a rectangle and the faces are isosceles…

Illustration of a hollow right heptagonal (septagonal) pyramid. The base is a heptagon and the faces are isosceles triangles. The pyramid is inverted, meaning that the vertex is at the bottom and the base is on top.

Inverted Septagonal/Heptagonal Pyramid

Illustration of a hollow right heptagonal (septagonal) pyramid. The base is a heptagon and the faces…

Illustration of a hollow right heptagonal (septagonal) pyramid. The base is a heptagon and the faces are isosceles triangles. The pyramid is inverted, meaning that the vertex is at the bottom and the base is on top. The hidden edges are shown in this drawing.

Inverted Septagonal/Heptagonal Pyramid

Illustration of a hollow right heptagonal (septagonal) pyramid. The base is a heptagon and the faces…

Isegrim the wolf telling Reynard the Fox that there is a great treasure hidden and they are planning to make Bruin the bear the new king.

Reynard the Fox: Isegrim the Wolf

Isegrim the wolf telling Reynard the Fox that there is a great treasure hidden and they are planning…

Illustration of a right septagonal/heptagonal pyramid, with hidden edges shown, that has been cut by a plane parallel to the base. The lower part is known as the frustum.

Septagonal/Heptagonal Pyramid Cut By Plane

Illustration of a right septagonal/heptagonal pyramid, with hidden edges shown, that has been cut by…

Illustration of a septagonal/heptagonal pyramid that has been cut by a plane parallel to the base. The top section has been removed and the remaining section is known as the frustum of the pyramid. The hidden edges are shown in this illustration.

Frustum Of A Septagonal/Heptagonal Pyramid

Illustration of a septagonal/heptagonal pyramid that has been cut by a plane parallel to the base. The…

A tuning fork on top of a hollow box.

Tuning fork and box

A tuning fork on top of a hollow box.