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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 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 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
Diagram of a typical landslide monitoring instrumentation. (Credit: USGS)
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from article Engineering geology
Rock-physics laboratory instrumentation for testing triaxial shear strength. Shearing stresses tend to separate portions of the rock (or soil) mass. Faults and folds are examples of shear failures in nature. In engineering structures, every…
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from article Engineering geology
Geologic map that can be used to identify geologic hazards and for land-use planning. (Credit: USGS)
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from article Flight controls
Simplified diagram of a typical primary flight-control system, governing attitude and direction. ( After C. H. Chatfield, C. F. Taylor, and S. Ober, The Airplane and Its Engine, 5th ed., McGraw-Hill, 1949)
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from article Flight controls
Typical airplane control systems of varying degrees of complexity, illustrated for the case of longitudinal (elevator or stabilizer) control. Similar systems are used for the other control surfaces. (a) Mechanical control system. (b) Mechanical…
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from article Flight controls
Examples of active control. (a) Active control to allow reduced static stability. Change in angle of attack and associated change in lift produce an upsetting moment. (b) Active maneuver load control. (c) Active control for gust load alleviation. (d…
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from article Sequence stratigraphy
Seismic reflection characterization. (a) Seismic transect across the western margin of Bimini Bank, Bahamas Platform, showing variations in seismic facies. Note the poorly reflective rocks at lower right, representing a sedimentary basement bounded…
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from article Sequence stratigraphy
Clastic-dominated sequence. (a) Model for clastic-dominated sequences on an extensional continental margin, showing the key stratigraphic surfaces and the four major systems tracts that develop within each sequence. Double-headed arrows show three…
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from article Cartography
Paper and smartphone maps for navigation. (Credit: Mmaxer/Shutterstock)
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from article Cartography
Distribution of chronic wasting disease of the deer family in North America, April 2018. (Credit: Bryan Richards, USGS National Wildlife Health Center)
