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from article Deep inelastic collisions

Deep inelastic collision between an electron and a proton, where the nucleon is viewed either (a) as a blob that breaks up or (b) as composed of quarks, one of which is ejected by elastic scattering with the electron.

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from article Nose cone

Flow about slender body.

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from article Nose cone

Flow about blunt body.

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from article Optical prism

Optical prism, consisting of a refracting medium bounded by two surfaces. Dispersion of light into its component colors is shown. (After W. J. Smith, Modern Optical Engineering, 3d ed., SPIE Press–McGraw-Hill, 2000)

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from article Optical prism

System of two Porro prisms, used to invert the image in traditional binoculars. (After R. E. Hopkins and R. Hanau, U.S. Military Handbook for Optical Design, republished by Sinclair Optics, 1987)

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from article Optical prism

Pentaprism, used in single lens reflex cameras. (a) Perspective view, showing how the prism deviates light through an angle of 90° without inverting or reverting the image. (b) Ray diagram. (After R. E. Hopkins and R. Hanau, U.S. Military Handbook…

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from article Optical prism

Set of two thin prisms, known as optical wedges, which can be used as an alignment device. (After P. R. Yoder, Jr., Non-image forming optical components, in Geometrical Optics, SPIE Proc., 531:206–220, 1985)

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from article Cogeneration system

Cogeneration topping-cycle system.

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from article Cogeneration system

Cogeneration bottoming-cycle system.

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from article Authigenic minerals

Calcite concretion formed in Paleocene marine siltstone, Moeraki beach, New Zealand. Uncemented siltstone has been eroded away by wave action. Concretion is about 2 m (7 ft) in diameter, which is unusually large.

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from article Authigenic minerals

Scanning electron micrograph of authigenic kaolinite. The clay mineral formed from dissolution of calcic feldspar in a Miocene sandstone, San Joaquin basin, California.

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from article Authigenic minerals

Scanning electron micrograph of clinoptilolite zeolite (white crystals) on smectite-coated (dark background) sand grains. Sample is from Paleocene volcanic sandstone, Baja California, Mexico.

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from article Nuclear reactor

Boiling-water reactor. (1) The core inside the reactor vessel creates heat. (2) A liquid-steam mixture is produced when very pure water (reactor coolant) moves upward through the core, absorbing heat. (3) The liquid-steam mixture leaves the top of…

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from article Nuclear reactor

Pressurized-water reactor. (1) The core inside the reactor vessel creates heat. (2) Pressurized water in the primary coolant loop carries the heat to the steam generator. (3) Inside the steam generator, heat from the primary coolant loop vaporizes…

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from article Nuclear reactor

A nuclear plant, using a pressurized-water reactor. The PWR keeps water under pressure so that it is heated, but does not boil. Water from the reactor and the water in the steam generator that is turned into steam never mix. In this way, most of the…

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from article Nuclear reactor

High-temperature gas-cooled reactor. (Credit: Atomic Industrial Forum, Inc.)

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from article Nuclear reactor

Loop-type liquid-metal fast breeder reactor. In some designs, referred to as pool-type, the heat exchanger and primary sodium pump are located with the core inside the pressure vessel. (Credit: Atomic Industrial Forum, Inc.)

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from article Armature

A rotor armature of of a direct-current generator or motor. (General Electric)

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from article Armature

A stator armature of an ac induction motor in a motor repair shop. (General Electric)

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from article Circle

A circle, with radius, diameter, and circumference indicated. (Credit: McGraw-Hill Education)

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from article Circle

Nine-point circle and Euler line PMH.

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from article Sonobuoy

Launch of a sonobuoy from an antisubmarine warfare (ASW) aircraft. (a) In flight. (b) Buoy strikes the water in a nearly vertical attitude. (c) Antenna and hydrophone are positioned automatically.

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from article J/psi particle

Online data from August and October 1974, showingexistence of J/psi particle. (After J. J. Aubert et al., Discovery of the new particle, J. Nuc. Phys., B89(1):1–18, 1975)

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from article Branch circuit

Typical electrical wiring system. Branch circuits are those portions of system beyond the final overcurrent device approved for branch-circuit protection.

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from article Engineering geology