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from article Sewage treatment
Activated sludge treatment. (Credit: U.S. EPA)
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from article Oolite
Plain light micrographs of thin sections of ooids and pisoids. (a) Oolite of Mississippian age, southwestern Indiana. (b) Pisoids from the hot springs of Karlovy Vary (Carlsbad), Czech Republic. The lower right pisoid shows a rock fragment nucleus…
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from article Metallography
Photomicrographs of typical microstructures of brass (70% Cu–30% Zn). (a) Annealed; grains with twin bands. (b) Reduced 40% by cold rolling; distorted grains. (c) Stress-corroded, with horizontal crack. (Courtesy of W. R. Johnson)
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from article Metallography
Photomicrographs of typical structures of iron and steel. (a) High-purity iron. (b) Steel containing 0.85% C, slowly cooled; pearlite structure, consisting of alternating layers of light ferrite and dark cementite. (c) Steel containing 0.80% C,…
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from article Metallography
Scanning electron micrograph of polymer latexes. The acrylic latex spheres of 400-nm diameter are on the surface of 19-μm polystyrene latex. (Courtesy of O. L. Shaffer)
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from article Metallography
Electron energy loss spectrum (EELS) image showing spherical precipitates of Al3Li in an aluminumlithium alloy. The intensity of each pixel of the digital image represents the energy lost by electrons passing through that region of the thin…
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from article Atmospheric tides
Variation of tidal amplitudes with height. The shaded area shows the general range of solar diurnal and semidiurnal amplitudes (on a logarithmic scale) as a function of height. The line corresponds to amplitude varying inversely with the square root…
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from article Iridium
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from article Human-factors engineering
Human-factors engineers design modern computer equipment, including ergonomic keyboards and mouse devices, to accommodate the varied physical contours and dimensions of the human hand. (Credit: JG Photography/Alamy)
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from article Human-factors engineering
Human-factors engineering addresses problems related to the design of seats, workplaces, and consoles in terms of a user's physical size, comfort, strength, and visibility. (Copyright © McGraw-Hill Education)
