| 单词 | photosphere |
| 例句 | The spacecraft is equipped with seven payloads to study the sun’s corona, chromosphere, photosphere and solar wind, the Indian Space Research Organization said. India launches spacecraft to study the sun after successful landing near the moon’s south pole 2023-09-01T04:00:00Z The Sun is so hot that you would be vaporized long before you reached the photosphere. Astronomy 2016-10-13T00:00:00Z “Then the photosphere cooled,” Dr. Montargès noted, “probably in the initially bright region that ejected the clump.” Betelgeuse Merely Burped, Astronomers Conclude 2021-06-17T04:00:00Z But the reality is that the cosmos changes all the time, and so the properties of the cosmic photosphere—the original source of the microwave background originated, vary as well. Watching the Universe Expand in Real Time 2021-05-06T04:00:00Z Instead, the astronomers say, temperature variations in the photosphere - the luminous surface of the star - most likely caused the brightness to drop. Nearby supergiant star's dimming explained 2020-06-29T04:00:00Z In all, the Parker probe will circle our home star 24 times and come within 4m miles of its visible surface, the photosphere. 'Mission to touch the sun': Nasa to launch Parker Solar Probe 2018-08-10T04:00:00Z They appear dark only in contrast with the hotter, brighter photosphere around them. Astronomy 2016-10-13T00:00:00Z But experts agree on one thing: It probably begins in the convection zone, just below the photosphere. Mission to the Nearest Star: Fastest Spacecraft Ever Will Dare to Sample the Sun's Corona 2018-08-09T04:00:00Z The energy probably starts as motion in the photosphere or just below, where astronomers see granules—seething, ever-shifting cells the size of Texas. NASA’s Parker Probe will venture closer than ever to the sun to explore its mysterious atmosphere 2018-08-01T04:00:00Z Brightness decreases precipitously as a function of distance from the photosphere, allowing human vision to discern the many wonderful eerie variations of brightness within the sun’s extended outer atmosphere, called the “corona.” Celebrating Sun-Earth Day: A Total Eclipse of the Mind 2018-03-25T04:00:00Z Anomalous isotopic mixtures in stellar photospheres or the interstellar medium: The Techno-Signature Challenge 2018-03-11T05:00:00Z The parts of the atmosphere are also labeled the photosphere, chromosphere, and corona. Astronomy 2016-10-13T00:00:00Z Instead, the researchers used data from the photosphere - the Sun's "surface" - to reconstruct what was going on 1,690km above in the corona. Secrets of solar flares are unlocked 2018-02-08T05:00:00Z With both feet planted in the photosphere, many of those lines resemble the Gateway Arch of St. Louis, Missouri. NASA’s Parker Probe will venture closer than ever to the sun to explore its mysterious atmosphere 2018-08-01T04:00:00Z Eastman, R. G., Schmidt, B. P. & Kirshner, R. The atmospheres of type II supernovae and the expanding photosphere method. Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star 2017-11-07T05:00:00Z At early times, when the photosphere is in the outermost layers of ejecta, the light curves resemble those of a homogeneous model with Xlan = 10−6. Origin of the heavy elements in binary neutron-star mergers from a gravitational-wave event : Nature : Nature Research 2017-10-15T04:00:00Z This photograph shows the photosphere—the visible surface of the Sun. Astronomy 2016-10-13T00:00:00Z This indicated that the photosphere was receding, the ejecta was becoming increasingly transparent and more absorption lines became visible. Spectroscopic identification of r-process nucleosynthesis in a double neutron-star merger : Nature : Nature Research 2017-10-15T04:00:00Z The sun's visible surface, the photosphere, simmers at about 5500°C. Grade school physics holds that because the corona is farther still from the heat source at the sun's core, temperatures should fall. NASA’s Parker Probe will venture closer than ever to the sun to explore its mysterious atmosphere 2018-08-01T04:00:00Z An eclipse allows astronomers to study the sun’s colorful outer atmosphere and its delicate extended corona, ordinarily invisible in the dazzling light of the photosphere. Total Eclipse, Partial Failure: Scientific Expeditions Don't Always Go as Planned 2017-08-15T04:00:00Z If skies are clear, observers will be able to see the sun’s halo-like corona, which is usually obscured by the brightness of the photosphere. Parades, parties and port-a-potties: Eclipse mania is taking hold from coast to coast 2017-07-20T04:00:00Z When astronomers speak of the “diameter” of the Sun, they mean the size of the region surrounded by the photosphere. Astronomy 2016-10-13T00:00:00Z Only the moon blocks the photosphere perfectly, revealing even the innermost part of the corona in brilliant detail. Scientists are gearing up to take the longest-ever video of a solar eclipse 2017-06-02T04:00:00Z “We won’t be able to see the corona because it’s just going to be swamped by the photosphere, the visible surface of the sun,” Dr. Young said. ‘Ring of Fire’ Solar Eclipse Will Cross South America and Africa on Sunday 2017-02-24T05:00:00Z During what’s called totality, the opaque moon completely hides the bright photosphere of the sun – its thin surface layer that emits most of the sun’s light. Total Eclipse, Partial Failure: Scientific Expeditions Don't Always Go as Planned 2017-08-15T04:00:00Z The corona is outshone by the Sun's surface, its photosphere. Eclipse to be turned into mega-movies - BBC News 2017-02-18T05:00:00Z The photosphere looks sharp only from a distance. Astronomy 2016-10-13T00:00:00Z Despite its tremendous heat, the corona doesn’t burn as brightly as the main part of the sun, called the photosphere. Scientists are gearing up to take the longest-ever video of a solar eclipse 2017-06-02T04:00:00Z “The photosphere is a million times brighter than the corona.” ‘Ring of Fire’ Solar Eclipse Will Cross South America and Africa on Sunday 2017-02-24T05:00:00Z On top of these coils, two copper electrodes serve as anchor points for a loop of plasma that mimics the arcs of plasma over the solar surface, or photosphere. Experiment Triggers Superhot Plasma Outbursts to Untangle Solar Flare Mystery 2014-07-10T04:00:00Z Images courtesy of Nasa The 'photosphere' is the visible surface of the Sun and the view we're most familiar with. The secret life of the Sun 2013-07-05T14:33:58Z In all the situations we are familiar with, temperatures fall as one moves away from the source of heat, and the chromosphere is farther from the center of the Sun than the photosphere is. Astronomy 2016-10-13T00:00:00Z It is designed to capture detailed images of light moving from the sun's surface, known as the photosphere, into the chromosphere. NASA telescope to probe long-standing solar mystery 2013-06-27T17:21:28Z Its surface, or photosphere, bristles with sunspots and erupts with powerful flares. NASA sets sights on the Sun 2013-06-19T17:20:23.097Z The D lines are dark in the sun because the photosphere is much hotter than the reversing layer. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2 "Hearing" to "Helmond" 2012-04-25T02:00:53.567Z The sun, he knew, rotated on its axis, and he knew that dark spots often exist on its photosphere; the questions that he put to himself were—Are there dark spots also on variable stars? Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4 "Hero" to "Hindu Chronology" 2012-04-04T02:00:56.447Z The corona extends millions of kilometers above the photosphere and emits about half as much light as the full moon. Astronomy 2016-10-13T00:00:00Z The higher the incandescence of the photosphere, the more it approaches in conductivity to that of the electrode, and the more, therefore, the solid and the gas form one conducting body. The inventions, researches and writings of Nikola Tesla With special reference to his work in polyphase currents and high potential lighting 2012-03-28T02:00:22.660Z According to Prof. Langley, the sun’s photosphere is 5000 times brighter than the molten metal in a “Bessemer convertor.” Astronomical Curiosities Facts and Fallacies 2012-03-27T02:00:18Z That part of the sun's surface under observation is known as the photosphere, that is, the part which radiates light. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Balfour Stewart and Lockyer have shown that this period is in some way connected with the action of the planets on the photosphere. Meteorology or Weather Explained 2012-02-20T03:00:18.847Z The reason we don’t see this light until an eclipse occurs is the overpowering brilliance of the photosphere. Astronomy 2016-10-13T00:00:00Z It would, on the contrary, be difficult to find a single one, which, when rightly viewed, is not surrounded by a moral photosphere. The Moral Instruction of Children 2012-02-02T03:04:33.057Z Wherever the telescope is turned all round the sun the lines of luminous gas are seen, showing that they form a complete layer outside the photosphere, or light-giving mass, of the sun. Through Magic Glasses and Other Lectures A Sequel to The Fairyland of Science 2011-10-03T02:00:33.003Z The prominences appear to be intimately connected with a gaseous envelope surrounding the solar photosphere, in which sodium and magnesium are present as well as hydrogen. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z But under ordinary conditions, we do not see the chromosphere itself, but look down through it on the photosphere, or general radiating surface. Are the Planets Inhabited? 2011-04-24T02:00:07.733Z Just as bright city lights make it difficult to see faint starlight, so too does the intense light from the photosphere hide the faint light from the corona. Astronomy 2016-10-13T00:00:00Z In the case of the sun this cloud layer is always present and is that part which we have learned to call the photosphere. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z Its three remote sensing instruments are: • Helioseismic and Magnetic Imager : will study the motions and magnetic fields at the Sun's surface, or photosphere, to determine what is happening inside the star. 2010-02-10T16:34:00Z The sun's original image is nearly 17 inches in diameter on the plate, and the solar chromosphere and prominences, together with the photosphere and facul�, are all recorded by monochromatic light. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z They seem incompatible with the apparent structure of the photosphere, which is everywhere made up of a complicated mottling: minute grains somewhat resembling those of rice in shape, of intense brightness, and irregularly scattered. Are the Planets Inhabited? 2011-04-24T02:00:07.733Z Make a sketch of the Sun’s atmosphere showing the locations of the photosphere, chromosphere, and corona. Astronomy 2016-10-13T00:00:00Z Upon the sun, however, the influence of the spot period is not limited to things in and near the photosphere, but extends to the outermost limits of the corona. A Text-Book of Astronomy 2011-01-05T03:00:57.347Z These spots are supposed to be breaks or openings in the luminous atmosphere or photosphere of the sun, through which its dark nucleus body is seen. The Philosophy of the Weather And a Guide to Its Changes The brighter streaks and mottlings known as facul� are probably elevations above the general photosphere, and seem to be crusts of luminous matter, often incandescent calcium, protruding through from the lower levels. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Here and there the bright granules of the photosphere become disturbed and torn apart, and broad areas are exposed which are relatively dark. Are the Planets Inhabited? 2011-04-24T02:00:07.733Z The horizontal scale shows the fraction of the Sun’s radius: the left edge is the very center, and the right edge is the visible surface of the Sun, which is called the photosphere. Astronomy 2016-10-13T00:00:00Z They are, as it were, signs of a perpetual explosion; they are the fringe of the mêlée, the shooting, streaming outbreaks of the photosphere of London. London Impressions Etchings and Pictures in Photogravure No need, however, has arisen for either relinquishing or holding but loosely the associated conclusions respecting the constitution of the photosphere and its envelope. Essays: Scientific, Political, & Speculative, Vol. I The spots themselves nearly always appear like depressions in the photosphere, and on repeated occasions they have been seen as actual notches when on the edge of the sun. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The Sun, then, is in an essentially gaseous condition, enclosed by the luminous shell which we term the photosphere. Are the Planets Inhabited? 2011-04-24T02:00:07.733Z Because it is so large, a giant star’s atoms are spread over a great volume, which means that the density of particles in the star’s photosphere is low. Astronomy 2016-10-13T00:00:00Z This is a layer of relatively cool gases lying immediately upon the photosphere. Astronomy of To-day A Popular Introduction in Non-Technical Language These are ascribed to waves in the photosphere; and the way in which such waves might produce an excess of light has been variously explained in conformity with various hypotheses. Essays: Scientific, Political, & Speculative, Vol. I Dark spots of a deep bluish black will often be seen on the photosphere of the sun. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The "photosphere" is a shell of incandescent cloud surrounding the nucleus, but the depth, or thickness of this shell is quite unknown. The Astronomy of the Bible An Elementary Commentary on the Astronomical References of Holy Scripture This effect is due to collisions between particles in the star’s photosphere—more collisions lead to broader spectral lines. Astronomy 2016-10-13T00:00:00Z The umbra ordinarily has the appearance of a deep hole in the photosphere; but, that it is a hole at all, has by no means been definitely proved. Astronomy of To-day A Popular Introduction in Non-Technical Language I refer to those bright spots, of a brilliancy greater than that of the photosphere, which are sometimes observed. Essays: Scientific, Political, & Speculative, Vol. I The view shows the "rice grain" structure of the photosphere and brilliant calcium flocculi. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The outer surface—which we see—of the photosphere is certainly pretty sharply defined, though very irregular, rising at points into whiter aggregations, called "faculæ," and perhaps depressed at other places in the dark "spots." The Astronomy of the Bible An Elementary Commentary on the Astronomical References of Holy Scripture Stronger lines mean that there are more atoms in the stellar photosphere absorbing light. Astronomy 2016-10-13T00:00:00Z It only appears so in contrast with the brilliant photosphere around. Astronomy of To-day A Popular Introduction in Non-Technical Language M. Faye's hypothesis appears to be espoused by him, partly because it affords an explanation of the spots, which are considered as openings in the photosphere, exposing the comparatively non-luminous gases filling the interior. Essays: Scientific, Political, & Speculative, Vol. I Janssen of Paris took photographs of the solar photosphere so highly magnified that the granulation or willow-leaf structure of the surface was clearly visible, and its variations traceable from hour to hour. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Immediately above the photosphere lies the "reversing layer" in which are found the substances which give rise to the gaps in the sun's spectrum—the Fraunhofer lines. The Astronomy of the Bible An Elementary Commentary on the Astronomical References of Holy Scripture Sunspots are dark regions where the temperature is up to 2000 K cooler than the surrounding photosphere. Astronomy 2016-10-13T00:00:00Z It is cooler than the underlying photosphere, and is composed of glowing gases. Astronomy of To-day A Popular Introduction in Non-Technical Language All the luminous spaces of more transparent cloud forming the adjacent photosphere, will be changed in shape by these centripetal currents. Essays: Scientific, Political, & Speculative, Vol. I If the atmosphere admits the use of high magnifying powers, the structure of the photosphere will be found more and more interesting the higher the power employed. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z Nearly all observers have arrived at the conclusion that sun-spots are depressions or cavities in the photosphere, but considerable difference of opinion exists as to how they are formed. The Astronomy of Milton's 'Paradise Lost' Compare and contrast the four different types of solar activity above the photosphere. Astronomy 2016-10-13T00:00:00Z The colour of the chromosphere is, in reality, a brilliant scarlet; but, as we have already said, the intensely white light of the photosphere shines through it from behind, and entirely overpowers its redness. Astronomy of To-day A Popular Introduction in Non-Technical Language Of the more special appearances which the photosphere presents, let us take first the faculæ. Essays: Scientific, Political, & Speculative, Vol. I Beneath the chromosphere is the layer of the sun from which emanates the light by which we see it, called the photosphere. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z The photosphere consists of gaseous vapours or clouds, of irregular form and size, separated by less brilliant interstices, and glowing white with the heat derived from the interior of the Sun. The Astronomy of Milton's 'Paradise Lost' Using the data in Appendix E, calculate the escape velocity from the photosphere of the Sun. Astronomy 2016-10-13T00:00:00Z This occurs because a strip of those layers which lie immediately upon the photosphere remains still uncovered. Astronomy of To-day A Popular Introduction in Non-Technical Language And if transparent, will not the light from the remote side of the photosphere seen through them, be nearly as bright as that of the side next to us? Essays: Scientific, Political, & Speculative, Vol. I Between photosphere and chromosphere is a very thin envelope, probably not over 700 miles in thickness, called the reversing layer. Astronomy: The Science of the Heavenly Bodies 2012-03-17T02:01:02.630Z In certain regions of the photosphere several dark patches are usually visible, which are called ‘sun-spots.’ The Astronomy of Milton's 'Paradise Lost' Since coronal mass ejections escape from the corona, would the escape velocity from there be more or less than from the photosphere? Astronomy 2016-10-13T00:00:00Z As has been stated, we can never see the corona unless, when during a total solar eclipse, the moon has, for the time being, hidden the brilliant photosphere completely from our view. Astronomy of To-day A Popular Introduction in Non-Technical Language What would result from them in a photosphere constituted and conditioned as above supposed? Essays: Scientific, Political, & Speculative, Vol. I It followed that they were regions of increased heat—regions, in fact, where the temperature was too high to permit the occurrence of the precipitations to which the photosphere is due. A Popular History of Astronomy During the Nineteenth Century Fourth Edition In the telescope the photosphere is not of uniform brilliancy, but presents a mottled or granular appearance, an effect created by the intermixture of spaces of unequal brightness. The Astronomy of Milton's 'Paradise Lost' If it does not change speed, how far from the photosphere will it extend after 3 hours? Astronomy 2016-10-13T00:00:00Z The solar spectrum is really composed of three separate spectra commingled, i.e. those of the photosphere, of the reversing layer, and of the chromosphere respectively. Astronomy of To-day A Popular Introduction in Non-Technical Language In fact, these four comets moved along very nearly the same track and rushed round the sun within a couple of hundred thousand miles of the surface of the photosphere. The Story of the Heavens The final term of blue heat, as we now know, is attained by the photosphere. A Popular History of Astronomy During the Nineteenth Century Fourth Edition The most important of these is the Chromosphere, which consists of layers of incandescent gases that envelop the photosphere and completely surround the Sun. The Astronomy of Milton's 'Paradise Lost' At a typical point in the photosphere, the pressure is less than 10% of Earth’s pressure at sea level, and the density is about one ten-thousandth of Earth’s atmospheric density at sea level. Astronomy 2016-10-13T00:00:00Z They seem to shrink away as a consequence of the photosphere closing in upon them. Astronomy of To-day A Popular Introduction in Non-Technical Language This layer is about five or six thousand miles deep, and is situated immediately above the dense layer of luminous clouds which forms the visible surface of the sun and which we call the photosphere. The Story of the Heavens The systematic drift of the photosphere is strictly a drift in longitude; its direction is everywhere parallel to the equator. A Popular History of Astronomy During the Nineteenth Century Fourth Edition The part of the Sun that we see is its luminous surface, or photosphere. Astronomy for Amateurs Observations with telescopes show that the photosphere has a mottled appearance, resembling grains of rice spilled on a dark tablecloth or a pot of boiling oatmeal. Astronomy 2016-10-13T00:00:00Z Taking into consideration the excessive force of gravity on the sun, one would expect to find the chromosphere and reversing layer growing gradually thicker in the direction of the photosphere. Astronomy of To-day A Popular Introduction in Non-Technical Language To this first atmosphere succeeds a second, luminous in itself, called the photosphere. Chambers's Edinburgh Journal, No. 441 Volume 17, New Series, June 12, 1852 Indeed, they almost certainly take place at a great height above the actual openings in the photosphere. A Popular History of Astronomy During the Nineteenth Century Fourth Edition These lines are therefore not absolutely dark, but dark by an amount corresponding to the difference between the light of the nucleus intercepted by the photosphere, and the light which issues from the latter. Fragments of science, V. 1-2 The bright granules are columns of hotter gases rising at speeds of 2 to 3 kilometers per second from below the photosphere. Astronomy 2016-10-13T00:00:00Z We do not know what lies under the photosphere, but, no doubt, the more solid portions of the sun are there situated. Astronomy of To-day A Popular Introduction in Non-Technical Language This photosphere, more or less remote from the inner cloudy atmosphere, would determine by its outline the visible limits of the orb. Chambers's Edinburgh Journal, No. 441 Volume 17, New Series, June 12, 1852 They possess, it would appear, photospheres radiating all kinds of light, and differ from each other mainly in the varying qualities of their absorptive atmospheres. A Popular History of Astronomy During the Nineteenth Century Fourth Edition So far, the best course I can get means we graze the sun’s photosphere in fourteen days six hours, allowing for acceleration by the sun’s gravity.” The Aliens As this rising gas reaches the photosphere, it spreads out, cools, and sinks down again into the darker regions between the granules. Astronomy 2016-10-13T00:00:00Z Just above the photosphere, and lying close upon it, is a veil of smoke-like haze. Astronomy of To-day A Popular Introduction in Non-Technical Language Thus, these experiments remove the theory out of the region of simple hypothesis, and give certainty to our conclusions respecting the photosphere. Chambers's Edinburgh Journal, No. 441 Volume 17, New Series, June 12, 1852 The difference of movement, or relative drift, supposed to occasion such prodigious disturbances, amounts, at the utmost, for two portions of the photosphere 123 miles apart, to about five yards a minute. A Popular History of Astronomy During the Nineteenth Century Fourth Edition There was a magnetic storm in the photosphere of a sun which was not supposed to have such things. Talents, Incorporated The region of the Sun’s atmosphere that lies immediately above the photosphere is called the chromosphere. Astronomy 2016-10-13T00:00:00Z If, therefore, the photosphere could be entirely removed, or covered up, we should see only the spectra of those layers which lie upon it. Astronomy of To-day A Popular Introduction in Non-Technical Language In that distant past, a handful of photons deep in the interior of Sol began their random journey to the photosphere. The Impossibles I learnt from him many of the songs in his repertoire and these were in even greater request than my talks about the photosphere of the Sun or the many moons of Saturn. My Reminiscences The central body or nucleus is surrounded by a brilliantly luminous envelope or layer of vaporous matter which is what we see when we look at the sun and which the astronomer calls the photosphere. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told In the seventeenth century, several observers described what appeared to them as a narrow red “streak” or “fringe” around the edge of the Moon during a brief instant after the Sun’s photosphere had been covered. Astronomy 2016-10-13T00:00:00Z The layer itself appears to be in a fairly quiescent state; a marked contrast to the seething photosphere beneath, and the agitated chromosphere above. Astronomy of To-day A Popular Introduction in Non-Technical Language The maze of her hair could hardly be told from the photosphere. Lore of Proserpine Below the chromosphere is the photosphere, the lower envelope of the sun, if it be not indeed the body of the sphere itself; from this comes the light and heat of the mass. Outlines of the Earth's History A Popular Study in Physiography Above—that is, overlying—the photosphere there is a second layer of glowing gases, which is known as the reversing layer. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told The temperature of the chromosphere is about 10,000 K. This means that the chromosphere is hotter than the photosphere, which should seem surprising. Astronomy 2016-10-13T00:00:00Z If it didn't, asteroid and Planeteers would end up as subatomic particles in the sun's photosphere, because he had calculated his blast to drive the asteroid past the limit of safety. Rip Foster in Ride the Gray Planet Think of an ebon sun fringed with its dazzling photosphere! Visionaries Below the photosphere lies the vast unknown mass of the unseen solar realm. Outlines of the Earth's History A Popular Study in Physiography The intense white heat of the photosphere beneath shines through this layer, overpowering its brilliant redness. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told Figure 15.8 summarizes how the temperature of the solar atmosphere changes from the photosphere outward. Astronomy 2016-10-13T00:00:00Z Perhaps It is in aphelion that the corona appears most splendid; Were perihelion to result is coalescence, perhaps the photosphere would be proved composed of terrestrial vapors. Hints for Lovers These lines of Fraunhofer are therefore not absolutely dark, but dark by an amount corresponding to the difference between the light intercepted and the light emitted by the photosphere. Six Lectures on Light Delivered In The United States In 1872-1873 The 'Sunspots' are immense gaps or holes in the photosphere, some of them 150,000 miles in diameter, which afford us a peep at the glowing interior. A Trip to Venus Here let us return to and see what more we know about the photosphere—the sun's surface. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told On this graph, temperature is shown increasing upward, and height above the photosphere is shown increasing to the right. Astronomy 2016-10-13T00:00:00Z The higher the incandescence of the photosphere the more it approaches in conductivity to that of the electrode, and the more, therefore, the solid and the gas form one conducting body. Experiments with Alternate Currents of High Potential and High Frequency Your discovery of the 'willow leaves' on the Solar photosphere having been brought forward at one of the late meetings of the Royal Astronomical Society, my attention was attracted to the subject. James Nasmyth: Engineer; an autobiography Above the photosphere comes a stratum of cooler vapours and gases, namely, hydrogen and helium, a very light element recently found on the earth, along with argon, in the rare mineral cleveite. A Trip to Venus It is from the photosphere that we have gained most of our knowledge of the composition of the sun, which is believed not to be a solid body. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told However, we now know that while this idea of layers—photosphere, chromosphere, transition region, corona—describes the big picture fairly well, the Sun’s atmosphere is really more complicated, with hot and cool regions intermixed. Astronomy 2016-10-13T00:00:00Z Her hopes mingled with the sunshine in an ideal photosphere which surrounded her as she bounded along against the soft south wind. Tess of the d'Urbervilles I may state that my impression was, and it appears to have been the impression of several of the assistants here, that the willow leaves stand out dark against the luminous photosphere. James Nasmyth: Engineer; an autobiography Tremendous jets of blazing hydrogen are seen to burst through the clouds of the photosphere, and play about in this higher region like the flames of a coal fire. A Trip to Venus Examination of the photosphere shows that the outer surface is never at rest. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told For example, clouds of carbon monoxide gas with temperatures colder than 4000 K have now been found at the same height above the photosphere as the much hotter gas of the chromosphere. Astronomy 2016-10-13T00:00:00Z If, then, we ask how the solar photosphere would appear to the eye, could we see it without absorption, these figures appear to show conclusively that it would be blue. Scientific American Supplement, No. 363, December 16, 1882 Between the earth and the sun—precisely speaking, between this laya center and the sun—there is a "point of balance," which falls within the photosphere of the sun. Ancient and Modern Physics Another is that the shining surface of the sun, the "photosphere," as it is technically called, seems so calm and quiet while forces are acting within it of a magnitude quite beyond our conception. Side-Lights on Astronomy and Kindred Fields of Popular Science It is in the brilliant photosphere that the dark areas known as sun-spots appear. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told A giant star has a large, extended photosphere. Astronomy 2016-10-13T00:00:00Z This distribution at the photosphere of the sun. Scientific American Supplement, No. 363, December 16, 1882 Each one of these planets has its laya centre inside the sun's photosphere. Ancient and Modern Physics That photosphere of our high fountain One, Our spirit's Lord and Reason's fostering sun, Philosophy, shall light us in the shade, Warm in the frost, make Good our aim and aid. Poems — Volume 3 Some of these dark spots—they are dark only by contrast with the photosphere surrounding them—are of enormous size, covering many thousands of square miles of surface. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told As a result, the pressure in a giant star’s photosphere is also low. Astronomy 2016-10-13T00:00:00Z More recent writers have appealed to the sun itself, and supposed that some prolonged veiling of its photosphere greatly reduced the amount of heat emitted by it. The Story of Evolution This layer is cooler than the underlying photosphere; it forms a veil of smoke-like haze and is of from 500 to 1,000 miles in thickness. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told It is from the photosphere, as has been said, that we have won most of our knowledge of the sun. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told Each constituent element in this outer envelope stops its own kind of light, that is, the kind of light made by incandescent atoms of the same element in the photosphere. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told |
| 随便看 |
英语例句辞典收录了117811条英语例句在线翻译词条，基本涵盖了全部常用单词及词组的例句翻译及用法，是英语学习的有利工具。