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from article Dewar flask
Two typical Dewar containers.
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from article Propagator (field theory)
Feynman diagrams for scattering processes. (a) Electron-proton scattering via photon exchange. (b) Proton-proton scattering via meson exchange.
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from article Conservation of energy
The conservation of energy allows energy to be interconverted among many different forms. In the use of wind power, for example, the kinetic energy of wind (movements of air) can be converted by turbine blades into electrical energy. (Credit: Ron…
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from article Electrical units and standards
Calculable capacitor. (a) Cross section of general cylindrical capacitor with four segments. (b) Cross section of symmetrical capacitor with cylindrical electrodes. (c) Calculable capacitor used in absolute determination of the ohm. (U.S. National…
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from article Electrical units and standards
Moving-coil balance. (a) Schematic diagram. (b) Equipment. (U.K. National Physical Laboratory)
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from article Electrical units and standards
Josephson effect. (a) Josephson junction characteristic. (b) Linear array of more than 2000 Josephson junctions in a folded microwave stripline, giving a total voltage step in the region of 1 volt. (U.S. National Institute of Standards and…
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from article Electrical units and standards
Quantum Hall effect. (a) Geometry of semiconductor. (b) Hall resistance characteristic. i = quantum number.
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from article Triple point
Phase diagram for water, showing gas, liquid, and several solid (ice) phases; triple points at A, B, and C. The pressure scale changes at 101 kilopascals from logarithmic scale at low pressure to linear at high pressure.
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from article Inertial confinement fusion
Ablative indirect drive and ablative direct drive. (a) In laser-illuminated, ablative indirect drive, the ICF target consists of a cylindrical hohlraum (hollow room) in which laser light is injected through the two holes in the end caps and heats…
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from article Inertial confinement fusion
X-ray images with a framing camera (developed at Lawrence Livermore National Laboratory) from a directly driven inertial confinement fusion capsule at the University of Rochester's Omega Facility. The camera has 80-ps exposure time and 55-ps time…
