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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 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 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 Goat production
Domesticated goats (Capra hircus) raised for meat goat production. (Photo by Susan Boyer, Agricultural Research Service, U.S. Department of Agriculture)
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from article Goat production
Close-up view of a Saanen goat. (Photo by Milan Kořínek)
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from article Goat production
Mechanical (automatic) milking of a purebred Nigerian Dwarf dairy goat on an elevated stand. (Photo courtesy of Lesa Wilke, Bramblestone Farm, Ohio; www.bramblestonefarm.com)
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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)
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from article Cartography
Computer rendering of the topography of the 48 contiguous United States based on 12 million elevations. (USGS)
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from article Blowpipe
Glassblower blowing into a blowpipe to shape molten glass. (Credit: Hero Images/Getty Images)
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from article Tin
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from article Tin
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from article Electric filter
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from article Electric filter
Passive, lumped-element filters. (a) RC low-pass filter. (b) LC band-pass filter.
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from article Electric filter
Ladder structure. (a) Overall structure with alternating series and shunt arms. (b) LC circuit whose impedance contains both a finite-frequency pole and a zero. Such circuits are used in the series and shunt arms of the ladder structure.
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from article Electric filter
Mechanical filter.
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from article Electric filter
Single-amplifier filters. (a) Low-pass Sallen-Key filter. (b) Low-pass, infinite-gain, single-amplifier filter. (c) Cascade of second-order filter realizations.
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from article Electric filter
Multiple-amplifier filters. (a) State-variable (KHN) filter. (b) Tow-Thomas filter.
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from article Electric filter
Simulated-inductor realization of fifth-order high-pass filter. (a) RLC prototype, normalized for cutoff frequency of 1 rad/s (0.159 Hz). (b) Direct active-RC realization.
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from article Sewage treatment
Street water drainage pipe emptying water out into nature. (Credit: Shutterstock /Brian Legate)
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from article Sewage treatment
Wastewater treatment through the secondary process.
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from article Sewage treatment
Grit chamber. (Credit: U.S. EPA)
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from article Sewage treatment
Trickling filters. (Credit: U.S. EPA)
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from article Sewage treatment
Activated sludge treatment. (Credit: U.S. EPA)
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from article Fungi
Porcini mushrooms (Boletus edulis) are members of the Basidiomycota division of Fungi. (Credit: Digoarpi/Shutterstock)
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from article Fungi
Spore types (upper illustrations) and structures of parent mycelia (lower illustrations) in fungi.
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from article Fungi
Sporangia of saprophytic Rhizopus. (Credit: Richard Gross; copyright © McGraw-Hill Education)
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from article Fungi
Sexual mechanisms in fungi: (a) gametic copulation; (b) gametangial copulation; (c) gamete-gametangial copulation; and (d) somatic copulation.
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from article Fungi
Colorized scanning electron micrograph of brewer's yeast cells (Saccharomyces cerevisiae). This fungus consists of single vegetative cells, and small daughter cells can be seen budding off from the larger cells. Brewer's yeast is used in the…
