| 词汇 | aphelion |
| 释义 | aphelion noun[ C or U ] physics specializeduk /æfˈiː.li.ən/ us /æfˈiː.li.ən/pluralapheliauk /æfˈiː.li.ə/ us /æfˈiː.li.ə/ the point in an object's orbit(= a curved path in space around a planet or star) around the sun at which the object is furthest from the sun: 远日点（与太阳相距最远的点） On 6 July this year, we will be at aphelion.今年的7月6日，我们将处于远日点。 Physics: particular theories & concepts azimuth conservation cryogenics dark matter Doppler effect emergence emergent kinetics libration momentum perihelion Planck's constant quantum refraction relativistic relativity spatio-temporal spring constant time dilation wormhole Oppositeperihelion Examples of aphelionaphelion The general shape of the diurnal profiles between perihelion and aphelion are similar, but dose values vary markedly. Also, since perihelion and aphelion do not happen on exactly the same dates as the solstices, the maxima and minima are slightly asymmetrical. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Increasing the eccentricity lengthens the time spent near aphelion and shortens the time near perihelion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The figure illustrates the effects of precession on the northern hemisphere seasons, relative to perihelion and aphelion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Meanwhile, the planet is approaching aphelion, and nobody is entirely certain that it is in a stable orbit around the sun. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The images below show the perihelion (green dot) and aphelion (red dot) points of the inner and outer planets. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Orbital eccentricity is represented by segments extending horizontally from perihelion to aphelion; inclination is shown on the vertical axis. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When the orbit is at its most elliptical, the amount of solar radiation at perihelion will be about 23% more than at aphelion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is the opposite of aphelion, which is when the orbit of the object is farthest from the sun. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. During aphelion water ice clouds form in the atmosphere, interacting with the dust particles and affecting the temperature of the planet. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Dust storms are most common during perihelion, when the planet receives 40 percent more sunlight than during aphelion. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Given the orbital eccentricity of this object, different epochs can generate quite different heliocentric unperturbed two-body best-fit solutions to the aphelion distance (maximum distance) of this object. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Given the extreme orbital eccentricity of this object, different epochs can generate quite different heliocentric unperturbed two-body best-fit solutions to the aphelion distance (maximum distance) of this object. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The hemisphere that is in summer at perihelion receives much of the corresponding increase in solar radiation, but that same hemisphere in winter at aphelion has a colder winter. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. On a very long time scale, the dates of the perihelion and of the aphelion progress through the seasons, and they make one complete cycle in 22,000 to 26,000 years. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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