Physics Today
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The Hydrogen EconomyIf the fuel cell is to become the modern steam engine, basic research must provide breakthroughs in understanding, materials, and design to make a hydrogen-based energy system a vibrant and competitive force
Physics Today - Tập 57 Số 12 - Trang 39-44 - 2004
Block Copolymers—Designer Soft MaterialsBlock copolymers are all around us, found in such products as upholstery foam, adhesive tape and asphalt additives. This class of macromolecules is produced by joining two or more chemically distinct polymer blocks, each a linear series of identical monomers, that may be thermodynamically incompatible (like oil and vinegar). Segregation of these blocks on the molecular scale (5–100 nm) can... ...
Physics Today - Tập 52 Số 2 - Trang 32-38 - 1999
Lagrangian coherent structures: The hidden skeleton of fluid flowsNew techniques promise better forecasting of where damaging contaminants in the ocean or atmosphere will end up.
Physics Today - Tập 66 Số 2 - Trang 41-47 - 2013
Defects and Superconductivity in the Copper OxidesFew superconducting materials have presented us with the structural elegance and complexity displayed by the recently discovered high-Tc copper oxides. The structures of these materials, consisting of metal-oxygen layers stacked in a variety of sequences, with the metal atoms often in unusual coordinations, are interesting in their own right. More importantly, our present understanding of ... ...
Physics Today - Tập 44 Số 6 - Trang 34-40 - 1991
The Grid: A New Infrastructure for 21st Century ScienceAs computer networks become cheaper and more powerful, a new computing paradigm is poised to transform the practice of science and engineering.
Physics Today - Tập 55 Số 2 - Trang 42-47 - 2002
Advantages and disadvantages of various interpretations of the quantum theoryJoseph Henry's genius was attracted primarily to the great experimental problems of his age. Although he was a professor of natural philosophy, a discipline which a century ago combined the various branches of physical science, he is not known to have indulged in the kind of formal considerations to which the title of this evening's discourse alludes. Yet I am confident that my subject is ... ...
Physics Today - Tập 7 Số 10 - Trang 6-13 - 1954
Superconducting Circuits and Quantum InformationSuperconducting circuits can behave like atoms making transitions between two levels. Such circuits can test quantum mechanics at macroscopic scales and be used to conduct atomic-physics experiments on a silicon chip.
Physics Today - Tập 58 Số 11 - Trang 42-47 - 2005
The Deborah NumberIn 1928 I came from Palestine to Easton, Pa., to assist Eugene Cook Bingham at the birth of Rheology. I felt strangely at home. There was Bethlehem quite near, there was a river Jordan and a village called little Egypt. The situation was, however, also slightly confusing. To go from Bethlehem to Egypt, one had to cross the river Jordan, a topological feature which did not conform to the or... ...
Physics Today - Tập 17 Số 1 - Trang 62-62 - 1964
The Primary Steps of PhotosynthesisPhotosynthesis, the process by which plants convert solar energy into chemical energy, results in about 10 billion tons of carbon entering the biosphere annually as carbohydrate—equivalent to about eight times mankind's energy consumption in 1990. The apparatus used by plants to perform this conversion is both complex and highly efficient. Two initial steps of photosynthesis—energy transfe... ...
Physics Today - Tập 47 Số 2 - Trang 48-55 - 1994
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