Combination of a bipyramid and prism
"...a combination of a bipyramid of the first order with a ditetragonal bipyramid and the prism of the…
Crystal of Fergusonite
"...a combination of tetragonal prism of the first order with a tetragonal bipyramid of the third order…
Macro-prism and Brachy-pinacoid
"This consists of four faces parallel to the brachy axis." -The Encyclopedia Britannica 1910
Brachy-prism and Macro-pinacoid
"This consists of four faces perpendicular to the vertical axis." -The Encyclopedia Britannica 1910
Crystal of Hemmorphite
"...a combination of the brachy-pinacoid and a prism, with the pedion, two brachy-domes and two marco-domes…
Crystal of Augite
"...represents a crystal of augite bounded by th clino-pinacoid, the ortho-pinacoid, a prism, and a…
Hexagonal Prism and Basal Pinacoid
"...shows a combination of a hexagonal prism (m) with the basal pinacoid (c)." -The Encyclopedia Britannica…
Crystal of Tourmaline
"...represents a crystal of tourmaline wit the trigonal prism, hexagonal prism, and a trigonal pyramid…
Crystal of Dioptase
"...represents a crystal of dioptase with the fundamental rhombohedron (r) and the hexagonal prism of…
Hexagonal Prism of the First Order
"Hexagonal prism of the first order, consisting of six faces also parallel to the hexad axis, but perpendicular…
Lenses of Various Forms
"a, prism; b, plane glass; c, spherical lens; d, double-convex; e, plano-convex, f, double-concave;…
Wedge
"A wedge is a triangular prism of hard material, fitted to be driven between objects that are to be…
Prism
"A prism is a transparent body with two refraction surfaces that lie in intersecting planes. The angle…
Cathetal Prism
"Cathetal prisms readily yield the phenomena of total reflection as shown, and are often used when light…
Refraction of Complimentary Colors
"The prism will deflect the red and orange, and form a reddish colored image at n. The violet, indigo,…
Color Spectrum
"A prism is used to disperse ordinary light, and slits are cut in paper S to only allow yellow and blue…
Parallelopipedon
"A parallelopipedon is a prism whose bases (ends) are parallelograms." —Hallock 1905
Cube
"A cube is a prism whose faces are ends are squares. All the faces of a cube are equal." —Hallock…
Sulphur
"An allotrope of sulphur, when heated to 115 degrees Celcius, will cool to be yellowish-brown, needle-shaped…
Prismatic Reflector
"Cross-section of prismatic reflector, showing how light rays are refracted and dispersed." —Croft…
Prism
"A prism is a piece of glass, having for its sides three plane surfaces and for its ends two equal and…
Cylinder Inscribed in Pentagonal Prism
Right circular cylinder inscribed in a pentagonal prism. Or, Pentagonal prism circumscribed about a…
Pyramid Frustum
An illustration of a pyramid with the top cut off by a plane parallel to the base. The remaining part…
Prismatoid With Quadrilateral Faces
An illustration of a prismatoid with faces that are quadrilaterals.
Flashcard of a Pyramid with a Rectangular Base
A flashcard featuring an illustration of a Pyramid with a Rectangular Base
Prism
Illustration of a prism - a polyhedron of which two faces are equal polygons in parallel planes, and…
Right Prism
Illustration of a right prism - a prism whose lateral edges are perpendicular to its bases.
Truncated Prism
Illustration of a truncated prism - the part of a prism included between the base and a section made…
Sections of Prism
Illustration of the sections of a prism made by parallel planes cutting all the lateral edges into equal…
Sections of Prism
Illustration of the sections of a prism made by parallel planes cutting all the lateral edges into equal…
Equal Prisms
Illustration showing two prisms are equal if the three faces which include a trihedral angle of the…
Parallelopiped with Plane Passing Through
Illustration of a parallelopiped with a plane passing through two diagonally opposite edges. The plane…
Parallelopiped with Plane Passing Through
Illustration of a parallelopiped with a plane passing through two diagonally opposite edges. The plane…
Parallelopiped Showing Volume
Illustration of a parallelopiped (a prism with a parallelogram as its base) used to demonstrate that…
Prism Showing Volume
Illustration of a prism used to demonstrate that the volume of any prism is equal to the product of…
Triangular Pyramid For Volume
Illustration of triangular pyramid used to show that the volume is the limit of the sum of the volumes…
Truncated Triangular Prism for Volume
A truncated triangular prism is equivalent to the sum of three pyramids, whose common base is the base…
Truncated Triangular Prism for Volume
A truncated triangular prism is equivalent to the sum of three pyramids, whose common base is the base…
Truncated Right Triangular Prism for Volume
A volume of a truncated right triangular prism is equal to the product of its base by one third the…
Truncated Right Triangular Prism for Volume
A volume of a truncated right triangular prism is equal to the product of its base by one third the…
