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Diurnal Mountain Winds Variation
Diurnal (" daily") may refer to: General * Diurnal cycle, any pattern that recurs daily ** Diurnality, the behavior of animals and plants that are active in the daytime * Diurnal phase shift, a phase shift of electromagnetic signals * Diurnal temperature variation, a cycle of daily temperature change Astronomy * Diurnal arc, the time (expressed in right ascension) that it takes a planet etc. to move from its rising to its setting point * Diurnal motion, the apparent motion of stars around the Earth Astrology * Diurnal chart, a chart for a given date, based on the natal chart * Diurnal planet, a planet in a sect for which the Sun is above the horizon * Diurnal sign, a sign in the zodiac See also * Diurnality *Salisbury Diurnal George Herbert Palmer ( Grantchester, 9 August 1846 - Oxford, 20 June 1926) was an English Anglo-Catholic priest, musicologist, organist, and expert on plainchant, particularly of the Sarum Use. Named after the priest and poet George Herbert, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diurnal Cycle
A diurnal cycle (or diel cycle) is any pattern that recurs every 24 hours as a result of one full rotation of the planet Earth around its axis. Earth's rotation causes surface temperature fluctuations throughout the day and night, as well as weather changes throughout the year. The diurnal cycle depends mainly on incoming solar radiation. Climate and atmosphere In climatology, the diurnal cycle is one of the most basic forms of climate patterns, including variations in diurnal temperature and rainfall. Diurnal cycles may be approximately sinusoidal or include components of a truncated sinusoid (due to the Sun's rising and setting) and thermal relaxation ( Newton cooling) at night. The diurnal cycle also has a great impact on carbon dioxide levels in the atmosphere, due to processes such as photosynthesis and cellular respiration. Biological effects Diurnal cycles of light and temperature can result in similar cycles in biological processes, such as photosynthesis i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diurnality
Diurnality is a form of plant and ethology, animal behavior characterized by activity during daytime, with a period of sleeping or other inactivity at night. The common adjective used for daytime activity is "diurnal". The timing of activity by an animal depends on a variety of environmental factors such as the temperature, the ability to gather food by sight, the risk of predation, and the time of year. Diurnality is a cycle of activity within a 24-hour period; cyclic activities called circadian rhythms are endogenous cycles not dependent on external cues or environmental factors except for a zeitgeber. Animals active during twilight are crepuscular, those active during the night are nocturnal and animals active at sporadic times during both night and day are cathemerality, cathemeral. Plants that open their flowers during the daytime are described as diurnal, while those that bloom during nighttime are nocturnal. The timing of flower opening is often related to the time at which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diurnal Phase Shift
In telecommunication, diurnal phase shift is the phase shift of electromagnetic signals associated with daily changes in the ionosphere The ionosphere () is the ionized part of the upper atmosphere of Earth, from about to above sea level, a region that includes the thermosphere and parts of the mesosphere and exosphere. The ionosphere is ionized by solar radiation. It plays an .... The major changes usually occur during the period of time when sunrise or sunset is present at critical points along the path. Significant phase shifts may occur on paths wherein a reflection area of the path is subject to a large tidal range. In cable systems, significant phase shifts can be occasioned by diurnal temperature variance. See also * Terminator (solar) - "grey line" References Radio frequency propagation {{telecomm-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diurnal Temperature Variation
In meteorology, diurnal temperature variation is the variation between a high air temperature and a low temperature that occurs during the same day. Temperature lag Temperature lag is an important factor in diurnal temperature variation: peak daily temperature generally occurs ''after'' noon, as air keeps net absorbing heat even after noon, and similarly minimum daily temperature generally occurs substantially after midnight, indeed occurring during early morning in the hour around dawn, since heat is lost all night long. The analogous annual phenomenon is seasonal lag. As solar energy strikes the Earth's surface each morning, a shallow layer of air directly above the ground is heated by conduction. Heat exchange between this shallow layer of warm air and the cooler air above is very inefficient. On a warm summer's day, for example, air temperatures may vary by from just above the ground to waist height. Incoming solar radiation exceeds outgoing heat energy for many hours afte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diurnal Arc
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Diurnal Motion
Diurnal motion (, ) is an astronomical term referring to the apparent motion of celestial objects (e.g. the Sun and stars) around Earth, or more precisely around the two celestial poles, over the course of one day. It is caused by Earth's rotation around its axis, so almost every star appears to follow a circular arc path, called the diurnal circle, often depicted in star trail photography. The time for one complete rotation is 23 hours, 56 minutes, and 4.09 seconds – one sidereal day. The first experimental demonstration of this motion was conducted by Léon Foucault. Because Earth orbits the Sun once a year, the sidereal time at any given place and time will gain about four minutes against local civil time, every 24 hours, until, after a year has passed, one additional sidereal "day" has elapsed compared to the number of solar days that have gone by. Relative direction The relative direction of diurnal motion in the Northern Celestial Hemisphere are as follows: * Facing nort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natal Chart
A horoscope (or other commonly used names for the horoscope in English include natal chart, astrological chart, astro-chart, celestial map, sky-map, star-chart, cosmogram, vitasphere, radical chart, radix, chart wheel or simply chart) is an astrological chart or diagram representing the positions of the Sun, Moon, planets, astrological aspects and sensitive angles at the time of an event, such as the moment of a person's birth. The word horoscope is derived from the Greek words ''ōra'' and ''scopos'' meaning "time" and "observer" (''horoskopos'', pl. ''horoskopoi'', or "marker(s) of the hour"). It is used as a method of divination regarding events relating to the point in time it represents, and it forms the basis of the horoscopic traditions of astrology. Horoscope columns are often featured in print and online newspapers. In common usage, horoscope often refers to an astrologer's interpretation, usually based on a system of solar Sun sign astrology; based strictly on the pos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Astrology Of Sect
Sect is an ancient astrological concept in which the seven traditional "planets" (including the Sun, the Moon and the five starry planets) are assigned to two different categories: diurnal or nocturnal sect. As can be seen by the example of Mercury, which is more obscured by being occidental, sect is a form of astrological polarity, much as the distinction between masculine and feminine planets. Since some planets were seen to be stronger in a positive or masculine environment, and others were seen to be more effective in a negative or feminine environment, whether a planet is in sect in any given chart was of particular importance to Hellenistic astrologers, who gave sect greater weight than any other astrological factor. The luminary of sect is the luminary which is said to rule each sect. The Sun is the luminary of sect in a day chart (where the Sun is above the horizon) and the Moon is the luminary of sect in a night chart (when the Sun is below the horizon.) This distinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diurnal Sign
{{Unreferenced, date=June 2019, bot=noref (GreenC bot) In astrology, a diurnal sign is a sign in the zodiac whose natural positions are on the southern hemisphere of the horoscope. The diurnal signs are therefore:- * Libra * Scorpio * Sagittarius * Capricorn * Aquarius * Pisces Pisces may refer to: * Pisces, an obsolete (because of land vertebrates) taxonomic superclass including all fish *Pisces (astrology), an astrological sign *Pisces (constellation), a constellation **Pisces Overdensity, an overdensity of stars in t ... Note: The hemispheres are opposite their representation on the horoscope. Therefore, the southern hemisphere will be seen on the top of the horoscope. Western astrological signs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
