| 单词 | isotropic |
| 例句 | Until now, structures with isotropic porosity have been applied, but these have the drawback that they exponentially attenuate the incident solar radiation as it travels into the reactor. 3D printed reactor core makes solar fuel production more efficient 2023-10-27T04:00:00Z One might be tempted to simplify matters and build only antennas that send equal-strength signals in every direction at once, which are called isotropic antennas. Math’s ‘Hairy Ball Theorem’ Has Surprising Implications 2023-08-18T04:00:00Z The attractive forces between ions are isotropic—the same in all directions—meaning that any particular ion is equally attracted to all of the nearby ions of opposite charge. Chemistry 2019-02-14T00:00:00Z In fact, its uniformity in every direction is one of the best confirmations of the cosmological principle— that the universe is homogenous and isotropic. Astronomy 2016-10-13T00:00:00Z The radio waves, the article explains, are shaped by passing through an “isotropic device,” which increases linear precision in multiple directions simultaneously without losing any signal capacity. Navy ships improve attack with new multi-beam satellite antenna 2020-05-18T04:00:00Z “It would be great if we knew, once and for all, if the late universe looks isotropic or not.” Do We Live in a Lopsided Universe? 2020-04-15T04:00:00Z There’s just one problem: a certain hirsute fact from topology mandates that isotropic antennas can’t exist. Math’s ‘Hairy Ball Theorem’ Has Surprising Implications 2023-08-18T04:00:00Z The authors then confirmed this finding using a mechanical model of the outer surface, in which the lengths of cell–cell interfaces were minimized, encouraging isotropic shapes. A 3D cell shape that enables tube formation 2018-09-09T04:00:00Z Explain what we mean when we call the universe homogeneous and isotropic. Astronomy 2016-10-13T00:00:00Z Atom–atom repulsion and dispersion interactions were modelled using the W99 intermolecular potential with the addition of isotropic parameters for sulfur. Functional materials discovery using energy–structure–function maps : Nature : Nature Research 2017-03-21T04:00:00Z Such a long lifetime implies that strong isotropic turbulence and conduction are suppressed in the core, despite the unrelaxed state of the cluster. [Report] Linear Structures in the Core of the Coma Cluster of Galaxies 2013-09-19T17:56:34.487Z We note that the particular arrangement of antennas on the surface should not matter for an isotropic absorber, because it is necessary to introduce only enough magnetic current to offset the electric current. Controlled-reflectance surfaces with film-coupled colloidal nanoantennas 2012-12-11T21:22:39.403Z But the cortex also spans the rest of the exposed apical and basal surfaces, and the contraction of this medial web seems not to tend to isotropic shapes in the same way3. A 3D cell shape that enables tube formation 2018-09-09T04:00:00Z Would you say that the distribution of elephants on Earth is homogeneous and isotropic? Astronomy 2016-10-13T00:00:00Z The first assumption is that Einstein's general relativity holds everywhere in the Universe; the second is that the Universe is homogenous and isotropic. Cosmology: Out of the darkness 2012-10-10T21:51:18.137Z This follows from the theorem that the only conformal, or angle-preserving, mappings in three dimensions are rigid motions or isotropic scaling. [Technical Response] Response to Comment on “The Geometric Structure of the Brain Fiber Pathways” 2012-09-27T17:55:32.233Z Its permeability is isotropic -- that is, it has the same value in all directions. 'Antimagnet' Renders Magnets Invisible 2012-03-22T22:45:04.457Z Both are adapted for determining the axes of elasticity and for the differentiation of isotropic and anisotropic bodies. Microscopes and Accessory Apparatus Catalogue No. 40 2011-04-14T02:00:42.743Z From this specific location, would you say the population distribution is isotropic? Astronomy 2016-10-13T00:00:00Z Allanite is a mineral readily altered by hydration, becoming optically isotropic and amorphous: for this reason several varieties have been distinguished, and many different names applied. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6 "English Language" to "Epsom Salts" 2011-02-19T03:00:59.807Z The most complete success has attended the efforts of mathematicians to solve the problem of free vibrations for an isotropic sphere. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z Light gets trapped by these whispering gallery modes with little chance to escape except by a faint isotropic emission. Capasso Lab Demonstrates Highly Unidirectional 'Whispering Gallery' Microlasers 2010-12-14T16:00:00Z When the crystals are heated these optical characters change, and at a temperature of 265� the crystals suddenly become optically isotropic; on cooling, however, the complexity of internal structure reappears. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 2 "Bohemia" to "Borgia, Francis" If the universe is isotropic and homogeneous, why do they need more than one slice? Astronomy 2016-10-13T00:00:00Z The substance is usually optically isotropic, though sometimes it exhibits anomalous double refraction; fibrous zinc sulphide which is doubly refracting is to be referred to the hexagonal species wurtzite. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1 "Bisharin" to "Bohea" The relations between stress and strain in a material which is not isotropic are much more complicated. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z Other names for the circular lines are “circulars” or “isotropic lines.” Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" In thin sections it is translucent and optically isotropic, and recent examinations seem to prove that it is a homogeneous mineral and not a mechanical mixture of chrysocolla and limonite. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" With these there may be a greater or less amount of brown, isotropic glass. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3 "Banks" to "Bassoon" Brewster found the specimens which he examined to be perfectly isotropic, exercising no influence in depolarizing light. Scientific American Supplement, No. 595, May 28, 1887 We shall here indicate the nature of the effects produced in a thin plane plate, of isotropic material, which is slightly bent by pressure. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z The electromagnetic fields appear as ultimate, irreducible realities, and at first it seems superfluous to postulate a homogeneous, isotropic ether-medium, and to envisage electromagnetic fields as states of this medium. Sidelights on Relativity We consider, in particular, the case of a naturally straight spring or rod of circular section, radius c, and of homogeneous isotropic material. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z Sometimes the phrases “isotropic tension” and “hydrostatic pressure” are used instead of “uniform” tension or pressure. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z For many years the luminiferous medium was identified with the isotropic solid of the theory of elasticity. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z |
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