標(biāo)題: Titlebook: Challenges of Astronomy; Hands-on Experiments W. Schlosser,T. Schmidt-Kaler,E. F. Milone Textbook 1991 Springer-Verlag New York Inc. 1991 a [打印本頁(yè)] 作者: trace-mineral 時(shí)間: 2025-3-21 19:44
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作者: 傾聽(tīng) 時(shí)間: 2025-3-21 21:59 作者: 先鋒派 時(shí)間: 2025-3-22 02:16 作者: indicate 時(shí)間: 2025-3-22 07:51 作者: 處理 時(shí)間: 2025-3-22 11:41 作者: Diuretic 時(shí)間: 2025-3-22 16:16
Personalführung in Medizinbetriebenmean solar time, the rotational period of the Earth.. A satellite with these properties is called a .; it remains stationary over a particular point on the Earth’s equator, to provide continuous relay of television and telecommunications to a wide area within direct sightlines of the satellite.作者: Diuretic 時(shí)間: 2025-3-22 20:58
Measuring Lunar Mountains,at the margins of the maria and in centers and raised walls of craters. The actual heights of lunar mountains are similar to those of Earth but as a percentage of global diameter, the lunar mountains are proportionately higher.作者: HERE 時(shí)間: 2025-3-22 22:42 作者: CONE 時(shí)間: 2025-3-23 01:57
Earth Satellites,mean solar time, the rotational period of the Earth.. A satellite with these properties is called a .; it remains stationary over a particular point on the Earth’s equator, to provide continuous relay of television and telecommunications to a wide area within direct sightlines of the satellite.作者: FOLLY 時(shí)間: 2025-3-23 07:16
,The Moon’s Orbit,ce the Moon’s orbit is further complicated mainly, though not exclusively, by the circumstance that it is in a three-body system. The Sun is the principal perturber of the lunar orbit; two of the other sources of perturbations are the nonspherical shape of the Earth and the gravitational attraction of the other planets.作者: grovel 時(shí)間: 2025-3-23 09:56
The Galilean Moons of Jupiter,he other planets from an unfavorable perch on our own moving planet, their movements in our sky are somewhat complicated (see Chapters 7 and 8). Consequently, the brightest of Jupiter’s moons are incomparably better for demonstrating the third Keplerian law quantitatively.作者: 水汽 時(shí)間: 2025-3-23 16:48
The Speed and Color of Light,eous; thus when a smooth-surfaced body of water is exposed to a starlit sky, images of stars and sky immediately descend and are seen in the water. Even in Lucretius’s time, the stars were at the extreme of the heavens.作者: 急性 時(shí)間: 2025-3-23 19:37 作者: 抵押貸款 時(shí)間: 2025-3-24 00:44
Mikrobiomische Selbstwirksamkeitrdless of angular diameter, takes the same length-a sidereal day-to complete. The stars also maintain the same positions relative to each other. In the past when people assumed the Earth to be motionless, the easiest way to account for such a phenomenon was to imagine that the stars were embedded on a great rotating sphere.作者: 逗留 時(shí)間: 2025-3-24 06:23
https://doi.org/10.1007/978-3-8350-9568-7enith. A change in the latitude of the observer will show up as a shift in the displacement of the diurnal paths of the stars in the field of view of the exposure. For a displacement of 2 mm on an exposure taken with a camera lens of 135-mm focal length, a north-south displacement of 100 km is needed.作者: 發(fā)源 時(shí)間: 2025-3-24 07:02 作者: Affiliation 時(shí)間: 2025-3-24 10:50
https://doi.org/10.1007/978-3-642-96838-9 the sky. The looping or zigzag movement of a planet at opposition is seen to result from a combination of the planet’s orbital motion and from the parallactic shifts caused by the motion of the Earthbound viewer.作者: 違抗 時(shí)間: 2025-3-24 15:10 作者: 出價(jià) 時(shí)間: 2025-3-24 20:52 作者: diskitis 時(shí)間: 2025-3-25 02:09
Astronomy of the Spheres,rdless of angular diameter, takes the same length-a sidereal day-to complete. The stars also maintain the same positions relative to each other. In the past when people assumed the Earth to be motionless, the easiest way to account for such a phenomenon was to imagine that the stars were embedded on a great rotating sphere.作者: pulmonary-edema 時(shí)間: 2025-3-25 04:12
,The Earth’s Radius,enith. A change in the latitude of the observer will show up as a shift in the displacement of the diurnal paths of the stars in the field of view of the exposure. For a displacement of 2 mm on an exposure taken with a camera lens of 135-mm focal length, a north-south displacement of 100 km is needed.作者: 發(fā)電機(jī) 時(shí)間: 2025-3-25 10:54 作者: 拒絕 時(shí)間: 2025-3-25 14:20 作者: watertight, 時(shí)間: 2025-3-25 19:17 作者: 壓倒性勝利 時(shí)間: 2025-3-25 23:55 作者: Pepsin 時(shí)間: 2025-3-26 03:51
Textbook 1991contains one or more challenges for the reader. The progression is from the Earth outward through the solar system to the stellar and galactic realm. Topics include the shape of the sky, Stonehenge as a stoneage abacus, determination of the size of the Earth, the distance of the Moon and planets, Ke作者: 銼屑 時(shí)間: 2025-3-26 05:04 作者: MUT 時(shí)間: 2025-3-26 11:31
Mikrobiomische Selbstwirksamkeitstars are along circular arcs, as the photographed paths of stars near the North Celestial Pole show (see Fig. 2.1). Each stellar diurnal circle, regardless of angular diameter, takes the same length-a sidereal day-to complete. The stars also maintain the same positions relative to each other. In th作者: Cleave 時(shí)間: 2025-3-26 16:28 作者: BADGE 時(shí)間: 2025-3-26 20:09
https://doi.org/10.1007/978-3-8350-9568-7s center, the arrow of gravity will point inevitably toward the Earth’s center. With the help of a spirit level, a camera can be directed toward the zenith. A change in the latitude of the observer will show up as a shift in the displacement of the diurnal paths of the stars in the field of view of 作者: CHOP 時(shí)間: 2025-3-27 00:31
https://doi.org/10.1007/978-3-8350-9568-7ce of the lunar maria (dry lava beds, misnamed “seas”), walled plains, craters, and mountains testifies to the similarities between terrestrial and lunar landscapes. These features argue for the unity of nature and its laws throughout the universe, although cosmic matter can be seen under more exoti作者: intelligible 時(shí)間: 2025-3-27 02:52
Cap Workload-Recording Methode,o any who would look through the telescope and believe the sight. In the Ptolemaic, or geocentric, view of the solar system, Venus revolved about Earth in an orbit . that of the Sun (hence the the term .). Since Venus’s motion never carries it very far from the Sun in the sky, it should not be able 作者: granite 時(shí)間: 2025-3-27 07:02
https://doi.org/10.1007/978-3-642-96838-9ng orbital positions of an exterior planet-one beyond the Earth’s orbit—and the Earth, and the consequent relative motion of the planet projected onto the sky. The looping or zigzag movement of a planet at opposition is seen to result from a combination of the planet’s orbital motion and from the pa作者: 蒼白 時(shí)間: 2025-3-27 12:07 作者: 記憶法 時(shí)間: 2025-3-27 14:15 作者: 文藝 時(shí)間: 2025-3-27 20:19 作者: 引導(dǎo) 時(shí)間: 2025-3-27 23:18
https://doi.org/10.1007/978-3-642-73067-2example of a pulsar, the mean density of which is a colossal 10. kg/m., or 10. g/cm.. Water has a mean density of only 1 g/cm., and the densest materials with which we are familiar have densities of up to ～ 20 g/cm.. The high densities found in the pulsars must be interpreted in terms of atomic nucl作者: 毛細(xì)血管 時(shí)間: 2025-3-28 03:01 作者: 昏迷狀態(tài) 時(shí)間: 2025-3-28 07:34 作者: Diluge 時(shí)間: 2025-3-28 12:06
Personalführung in Medizinbetrieben century ., contends that we are able to see objects around us because they emit replicas of themselves, just as snakes or cicadas shed their skins at certain times, although these replicas would be much thinner and would be emitted continuously. In his view, the passage of these images is instantan作者: 勉強(qiáng) 時(shí)間: 2025-3-28 14:48 作者: Negotiate 時(shí)間: 2025-3-28 19:50 作者: Pseudoephedrine 時(shí)間: 2025-3-29 01:15
I. A. Oprescu,G. Burstein,F. Loewand reddened by the atmosphere. The Sun makes an excellent probe for studies of atmospheric effects; it is especially useful for studying refraction, extinction, and color effects that occur near the horizon and the polarizing property of the atmosphere.作者: separate 時(shí)間: 2025-3-29 05:33 作者: 調(diào)整校對(duì) 時(shí)間: 2025-3-29 09:42 作者: Eviction 時(shí)間: 2025-3-29 13:34 作者: anaerobic 時(shí)間: 2025-3-29 18:55
I. A. Oprescu,G. Burstein,F. Loewand reddened by the atmosphere. The Sun makes an excellent probe for studies of atmospheric effects; it is especially useful for studying refraction, extinction, and color effects that occur near the horizon and the polarizing property of the atmosphere.作者: Gnrh670 時(shí)間: 2025-3-29 22:16 作者: foppish 時(shí)間: 2025-3-30 01:51 作者: VEIL 時(shí)間: 2025-3-30 05:00
Orbits and Space Travel,nd to all but one of the known planets. In this exercise, we explore first the properties of planetary orbits, then how to calculate their coordinates on the sky from their orbital elements, and, finally, how to design the orbit of a spacecraft to travel to a target planet.作者: ASTER 時(shí)間: 2025-3-30 09:06
Atmospheric Effects on Starlight and Sunlight,and reddened by the atmosphere. The Sun makes an excellent probe for studies of atmospheric effects; it is especially useful for studying refraction, extinction, and color effects that occur near the horizon and the polarizing property of the atmosphere.作者: 種子 時(shí)間: 2025-3-30 13:40 作者: 大廳 時(shí)間: 2025-3-30 20:07 作者: Habituate 時(shí)間: 2025-3-30 22:41 作者: 我要沮喪 時(shí)間: 2025-3-31 01:35 作者: 有毛就脫毛 時(shí)間: 2025-3-31 05:17 作者: Bph773 時(shí)間: 2025-3-31 12:04
Photography of the Sun and Stars,Here we begin discussing the radiant energy from natural cosmic bodies, in particular from the Sun and stars. It was recognized that distances could be found through comparisons of brightness well before the first measurement of stellar parallax by Bessel in 1838. We begin where Johannes Kepler first explored—with the inverse square law for light.作者: 痛苦一生 時(shí)間: 2025-3-31 15:01
http://image.papertrans.cn/c/image/223499.jpg作者: 退出可食用 時(shí)間: 2025-3-31 17:46 作者: 追蹤 時(shí)間: 2025-3-31 22:24 作者: 百靈鳥(niǎo) 時(shí)間: 2025-4-1 05:42 作者: CLOWN 時(shí)間: 2025-4-1 08:08
Planetary Surface Temperatures,urface, which then radiates infrared radiation. The temperatures of the planets are much lower than those of the Sun because of the enormous energy output of the Sun’s nuclear furnace. It may surprise you to learn, however, that the planets have their own internal sources of heat, although these sou作者: HACK 時(shí)間: 2025-4-1 11:45
The Vault of Heaven,mber on which the stars were emblazoned and within which the Sun, Moon, and planets moved. But not all ancient observers agreed on that perception. The shape of the sky is a subjective notion, conditioned by cultural, psychological, and physiological factors. It has sometimes been depicted as a flat
