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Compass Rose
A compass rose or compass star, sometimes called a wind rose or rose of the winds, is a polar coordinates, polar diagram displaying the orientation of the cardinal directions (north, east, south, and west) and their points of the compass, intermediate points. It is used on compass, compasses (including magnetic compass, magnetic ones), maps (such as compass rose networks), or monuments. It is particularly common in navigation systems, including nautical charts, non-directional beacons (NDB), VHF omnidirectional range (VOR) systems, satellite navigation devices ("GPS (device), GPS"). Types Linguistic anthropological studies have shown that most human communities have four points of cardinal direction. The names given to these directions are usually derived from either locally-specific geographic features (e.g. "towards the hills", "towards the sea") or from celestial bodies (especially the sun) or from atmospheric features (winds, temperature). Most mobile populations tend to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modern Nautical Compass Rose
Modern may refer to: History *Modern history ** Early Modern period ** Modern age, Late Modern period *** 18th century *** 19th century *** 20th century ** Contemporary history * Moderns, a faction of Freemasonry that existed in the 18th century Philosophy and sociology * Modernity, a loosely defined concept delineating a number of societal, economic and ideological features that contrast with "pre-modern" times or societies ** Late modernity Art * Modernism ** Modernist poetry * Modern art, a form of art * Modern dance, a dance form developed in the early 20th century * Modern architecture, a broad movement and period in architectural history ** Moderne, multiple architectural styles ** Modernisme a.k.a. Catalan Modernism * Modern music (other) Geography *Modra, a Slovak city, referred to in the German language as "Modern" Typography * Modern (typeface), a raster font packaged with Windows XP * Another name for the typeface classification known as Didone (typography) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Navigation Device
A satellite navigation (satnav) device or GPS device is a device that uses satellites of the Global Positioning System (GPS) or similar global navigation satellite systems (GNSS). A satnav device can determine the user's geographic coordinates and may display the geographical position on a map and offer routing directions (as in turn-by-turn navigation). , four GNSS systems are operational: the original United States' GPS, the European Union's Galileo, Russia's GLONASS, and China's BeiDou Navigation Satellite System. The Indian Regional Navigation Satellite System (IRNSS) will follow and Japan's Quasi-Zenith Satellite System ( QZSS) scheduled for 2023 will augment the accuracy of a number of GNSS. A satellite navigation device can retrieve location and time information from one or more GNSS systems in all weather conditions, anywhere on or near the Earth's surface. Satnav reception requires an unobstructed line of sight to four or more GNSS satellites, and is subject t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winter Solstice
The winter solstice, or hibernal solstice, occurs when either of Earth's geographical pole, poles reaches its maximum axial tilt, tilt away from the Sun. This happens twice yearly, once in each hemisphere (Northern Hemisphere, Northern and Southern Hemisphere, Southern). For that hemisphere, the winter solstice is the day with the shortest daytime, period of daylight and longest night of the year, and when the Sun is at its lowest culmination, daily maximum elevation in the sky. Each Polar Circle, polar region experiences polar night, continuous darkness or twilight around its winter solstice. The opposite event is the summer solstice. The winter solstice occurs during the hemisphere's winter. In the Northern Hemisphere, this is the December solstice (December 21 or 22) and in the Southern Hemisphere, this is the June solstice (June 20 or 21). Although the winter solstice itself lasts only a moment, the term also refers to the day on which it occurs. Traditionally, in many Tem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Equinox
A solar equinox is a moment in time when the Sun appears directly above the equator, rather than to its north or south. On the day of the equinox, the Sun appears to rise directly east and set directly west. This occurs twice each year, around 20 March and 23 September. An equinox is equivalently defined as the time when the plane of Earth's equator passes through the geometric center of the Sun's disk. This is also the moment when Earth's rotation axis is directly perpendicular to the Sun-Earth line, tilting neither toward nor away from the Sun. In modern times, since the Moon (and to a lesser extent the planets) causes Earth's orbit to vary slightly from a perfect ellipse, the equinox is officially defined by the Sun's more regular ecliptic longitude rather than by its declination. The instants of the equinoxes are currently defined to be when the apparent geocentric longitude of the Sun is 0° and 180°. The word is derived from the Latin ', from ' (equal) and ' ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Summer Solstice
The summer solstice or estival solstice occurs when one of Earth's poles has its maximum tilt toward the Sun. It happens twice yearly, once in each hemisphere ( Northern and Southern). The summer solstice is the day with the longest period of daylight and shortest night of the year in that hemisphere, when the sun is at its highest position in the sky. At either pole there is continuous daylight at the time of its summer solstice. The opposite event is the winter solstice. The summer solstice occurs during the hemisphere's summer. In the Northern Hemisphere, this is the June solstice (20, 21 or 22 June) and in the Southern Hemisphere, this is the December solstice (20, 21, 22 or 23 of December). Since prehistory, the summer solstice has been a significant time of year in many cultures, and has been marked by festivals and rituals. Traditionally, in temperate regions (especially Europe), the summer solstice is seen as the middle of summer and referred to as midsum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic Circle
The Arctic Circle is one of the two polar circles, and the northernmost of the five major circle of latitude, circles of latitude as shown on maps of Earth at about 66° 34' N. Its southern counterpart is the Antarctic Circle. The Arctic Circle marks the southernmost latitude at which, on the winter solstice in the Northern Hemisphere, the Sun does not rise all day, and on the Northern Hemisphere's summer solstice, the Sun does not set. These phenomena are referred to as polar night and midnight sun respectively, and the further north one progresses, the more obvious this becomes. For example, in the Russian port city of Murmansk, three degrees north of the Arctic Circle, the Sun stays below the horizon for 20 days before and after the winter solstice, and above the horizon for 20 days before and after the summer solstice. The position of the Arctic Circle is not fixed and currently runs north of the Equator. Its latitude depends on Earth's axial tilt, which axial precession, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristotle
Aristotle (; 384–322 BC) was an Ancient Greek philosophy, Ancient Greek philosopher and polymath. His writings cover a broad range of subjects spanning the natural sciences, philosophy, linguistics, economics, politics, psychology, and the arts. As the founder of the Peripatetic school of philosophy in the Lyceum (classical), Lyceum in Athens, he began the wider Aristotelianism, Aristotelian tradition that followed, which set the groundwork for the development of modern science. Little is known about Aristotle's life. He was born in the city of Stagira (ancient city), Stagira in northern Greece during the Classical Greece, Classical period. His father, Nicomachus (father of Aristotle), Nicomachus, died when Aristotle was a child, and he was brought up by a guardian. At around eighteen years old, he joined Plato's Platonic Academy, Academy in Athens and remained there until the age of thirty seven (). Shortly after Plato died, Aristotle left Athens and, at the request ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meteorology
Meteorology is the scientific study of the Earth's atmosphere and short-term atmospheric phenomena (i.e. weather), with a focus on weather forecasting. It has applications in the military, aviation, energy production, transport, agriculture, construction, weather warnings and disaster management. Along with climatology, atmospheric physics and atmospheric chemistry, meteorology forms the broader field of the atmospheric sciences. The interactions between Earth's atmosphere and its oceans (notably El Niño and La Niña) are studied in the interdisciplinary field of hydrometeorology. Other interdisciplinary areas include biometeorology, space weather and planetary meteorology. Marine weather forecasting relates meteorology to maritime and coastal safety, based on atmospheric interactions with large bodies of water. Meteorologists study meteorological phenomena driven by solar radiation, Earth's rotation, ocean currents and other factors. These include everyday ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zephyrus
In Greek mythology and religion, Zephyrus () (), also spelled in English as Zephyr (), is the god and personification of the West wind, one of the several wind gods, the Anemoi. The son of Eos (the goddess of the dawn) and Astraeus, Zephyrus is the most gentle and favourable of the winds, associated with flowers, springtime and even procreation. In myths, he is presented as the tender breeze, known for his unrequited love for the Spartan prince Hyacinthus. Alongside Boreas, the two are the most prominent wind gods with relatively limited roles in recorded mythology. Zephyrus, similarly to his brothers, received a cult during ancient times although his worship was minor compared to the Twelve Olympians. Still, traces of it are found in Classical Athens and surrounding regions and city-states, where it was usually joint with the cults of the other wind gods. His equivalent in Roman mythology is the god Favonius. Etymology The ancient Greek noun is the word for the wind that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eurus
In Greek mythology and religion, Eurus () is the god and personification of the east wind, although sometimes he is also said to be southeast specifically. He is one of the four principal wind gods, the Anemoi, alongside Boreas (north wind), Zephyrus (west wind) and Notus (south wind). Eurus is featured rarely in ancient literature and art, appearing together with his three brothers as part of a whole if at all, and virtually has no individual mythology of his own. Often he is excluded from the group entirely, leaving Boreas, Zephyrus and Notus to represent the Anemoi. His Roman equivalent is the god Vulturnus. Etymology The ancient Greek noun (''eûros'') refers to the wind that blows from the east. Its ultimate etymology is not clear, although it has been variously connected to the Greek words for the dawn (, ''ēṓs'') and aura (, ''aúra''). Attributes and family Eurus is traditionally the god of the east or south-east wind. He has been both described as rain-bringing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notus
In Greek mythology and religion, Notus () is the god of the south wind and one of the Anemoi (wind-gods), sons of the dawn goddess Eos and the star-god Astraeus. A desiccating wind of heat, Notus was associated with the storms of late summer and early autumn, wetness, mist, and was seen as a rain-bringer. Unlike his two more notable brothers, Boreas (the god of the north wind) and Zephyrus (the god of the west wind), Notus has little to no unique mythology of his own. His Roman equivalent is the god Auster. Etymology The Greek noun refers both to the south cardinal direction and the south wind that blows from it. Its ultimate etymology remains unknown, although a pre-Greek origin seems to be the most likely origin. Family Notus, like most of the wind gods, the Anemoi was said to be the son of Eos, the goddess of the dawn, by her husband Astraeus, a minor god related to the stars. Thus, he is brother to the five star-gods and the justice goddess Astraea, and half-brother t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boreas (god)
Boreas (, , , , ; also , ) is the Greek god of the cold north wind, storms, and winter. Although he was normally taken as the north wind, the Roman writers Aulus Gellius and Pliny the Elder both took Boreas as a northeast wind, equivalent to the Roman god Aquilo or Septentrio. Boreas is depicted as being very strong, with a violent temper to match. He was frequently shown as a winged old man or sometimes as a young man with shaggy hair and beard, holding a conch shell and wearing a billowing cloak. Boreas's most known myth is his abduction of the Athenian princess Orithyia of Athens, Oreithyia. Description Boreas, like the rest of the wind gods, was said to be the son of Eos, the goddess of the dawn, by her husband Astraeus, a minor star-god. He is thus brother to the rest of the Anemoi (the wind gods), the five star-gods and the justice goddess Astraea. Boreas was closely associated with horses, storms, and winter. He was said to have fathered twelve colts, after taking th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
