Showing posts with label The Nature Phenomenon. Show all posts
Showing posts with label The Nature Phenomenon. Show all posts
Monday, April 26, 2010
Aurora
Do you know about the aurora? Aurora is a natural phenomenon of luminescence light in the sky. Usually, the aurora will be visible only at night and occur in the polar regions. Both the north pole or south pole.
Aurora's happening in the north polar region is called the Aurora Borealis or commonly known as "Northern Polar Lights". This phenomenon occurs in September to October and in March to April. Aurora Borealis seen very clearly in the Arctic Islands north of Canada. Aurora Borealis name given by Pierre Gassendi in 1621. Derived from the word "aurora" which is the name of the Goddess of Dawn in Roman mythology and "borear" (in Greek) which means "wind from the north. Provided that the Aurora Borealis looks reddish or greenish glow from the north, as if the sun will rise from there.
In the southern polar region, the aurora is called Aurora Australis. The word "australis" comes from the Latin meaning "from the south". This phenomenon is called "Southern Polar Lights" has the same nature with the Aurora Borealis. However, the Aurora Australis visible only in Antarctica and a few places in Australia and South America. Especially the closest Antarctica.
Aurora is due to the interaction between the particles of the earth's magnetic field like electrons, protons, and other heavy particles with atoms and molecules found in the earth's ionosphere layers. Atom and particle emitted by the sun and are often called "solar wind".
Aurora comes with a variety of colors and shapes. Color variations due to the influence of atoms, ions, or molecules of constituent and also influenced by the level of solar wind activity. For example, ions or molecules give nitogen pink, green, sky blue, dark blue, or violet. Purple color also comes from neutral helium. Causing oxygen atoms scatter green and red colors. Meanwhile, the bright orange color comes from the neon. Aurora often appears to form a curtain that ran east-west direction or scattering of light. Sometimes, a quiet bow-shaped. In the form of a curtain, every curtain consisting of parallel light parallel to the direction of the magnetic field lines. It was impressive that the aurora is formed by the earth's magnetic field. Aurora forms can be changed by still hanging by the magnetism of the earth.
Aurora does not only happen on earth, but also can occur on other planets such as Venus, Mars, Jupiter, Saturn, Uranus, and Neptune. Cause the same as what happened on earth.
Jupiter and Saturn have magnetic fields stronger than the earth and also has a radiation belt is greater. Aurora of the two planets are observed by the Hubble Space Telescope. Aurora on Venus appears so bright and spread with various forms and intensity, sometimes spread to all over the planet. On August 14, 2004, SPICAM on Mars Express (a space exploration mission initiated by the European Space Agency) found an aurora on Mars. Precisely at Terra Cimerria, the coordinates of longitude 177 degrees east and latitude 52 degrees south. It is estimated that the aurora has a range of up to 30 km with an altitude of 8 km. Scientists suspect that the aurora emission associated with regions where the strongest magnetic field is localized. This is obtained after studying the map changes of magnetic surface is collected by the Mars Global Surveyor.
Not only the main course on the planet. Aurora can also occur on the planet escorts (satellite). Until now, the aurora can be observed only on Io, Europa, and which is Ganymade satellites of Jupiter with the Hubble Space Telescope.
On 28 August and 2 September 1859, in the northern hemisphere, occurs aurora is most amazing, very bright and most extensive coverage. The incident was caused by large storms and the results geomagnetic be called the Aurora Storm.
By Balfour Stewart, the event was recorded by magnetografph at Kew Observatory, London. Then he published a paper to the Royal Society on 21 November 1861 which contained allegations that the aurora which occurred on 2 September 1859 is the impact of Carrintgon -Hodgson solar flare which occurred on 1 September 1859.
Besides Balfour Stewart, ship officers and newspapers in the U.S., Japan, Europe, Australia and even the aurora was also documented. As already reported one of the leading U.S. newspapers, the New York Times, that on Friday, 2 September 1859 occurred most amazing aurora can be seen very clearly from the city of Boston (USA). At the same time at Kew Observatory magnetograph noted geomagnetic storm for an hour.
Aurora's happening in the north polar region is called the Aurora Borealis or commonly known as "Northern Polar Lights". This phenomenon occurs in September to October and in March to April. Aurora Borealis seen very clearly in the Arctic Islands north of Canada. Aurora Borealis name given by Pierre Gassendi in 1621. Derived from the word "aurora" which is the name of the Goddess of Dawn in Roman mythology and "borear" (in Greek) which means "wind from the north. Provided that the Aurora Borealis looks reddish or greenish glow from the north, as if the sun will rise from there.
In the southern polar region, the aurora is called Aurora Australis. The word "australis" comes from the Latin meaning "from the south". This phenomenon is called "Southern Polar Lights" has the same nature with the Aurora Borealis. However, the Aurora Australis visible only in Antarctica and a few places in Australia and South America. Especially the closest Antarctica.
Aurora is due to the interaction between the particles of the earth's magnetic field like electrons, protons, and other heavy particles with atoms and molecules found in the earth's ionosphere layers. Atom and particle emitted by the sun and are often called "solar wind".
Aurora comes with a variety of colors and shapes. Color variations due to the influence of atoms, ions, or molecules of constituent and also influenced by the level of solar wind activity. For example, ions or molecules give nitogen pink, green, sky blue, dark blue, or violet. Purple color also comes from neutral helium. Causing oxygen atoms scatter green and red colors. Meanwhile, the bright orange color comes from the neon. Aurora often appears to form a curtain that ran east-west direction or scattering of light. Sometimes, a quiet bow-shaped. In the form of a curtain, every curtain consisting of parallel light parallel to the direction of the magnetic field lines. It was impressive that the aurora is formed by the earth's magnetic field. Aurora forms can be changed by still hanging by the magnetism of the earth.
Not only on Earth
Aurora does not only happen on earth, but also can occur on other planets such as Venus, Mars, Jupiter, Saturn, Uranus, and Neptune. Cause the same as what happened on earth.
Jupiter and Saturn have magnetic fields stronger than the earth and also has a radiation belt is greater. Aurora of the two planets are observed by the Hubble Space Telescope. Aurora on Venus appears so bright and spread with various forms and intensity, sometimes spread to all over the planet. On August 14, 2004, SPICAM on Mars Express (a space exploration mission initiated by the European Space Agency) found an aurora on Mars. Precisely at Terra Cimerria, the coordinates of longitude 177 degrees east and latitude 52 degrees south. It is estimated that the aurora has a range of up to 30 km with an altitude of 8 km. Scientists suspect that the aurora emission associated with regions where the strongest magnetic field is localized. This is obtained after studying the map changes of magnetic surface is collected by the Mars Global Surveyor.
Not only the main course on the planet. Aurora can also occur on the planet escorts (satellite). Until now, the aurora can be observed only on Io, Europa, and which is Ganymade satellites of Jupiter with the Hubble Space Telescope.
Most Amazing
On 28 August and 2 September 1859, in the northern hemisphere, occurs aurora is most amazing, very bright and most extensive coverage. The incident was caused by large storms and the results geomagnetic be called the Aurora Storm.
By Balfour Stewart, the event was recorded by magnetografph at Kew Observatory, London. Then he published a paper to the Royal Society on 21 November 1861 which contained allegations that the aurora which occurred on 2 September 1859 is the impact of Carrintgon -Hodgson solar flare which occurred on 1 September 1859.
Besides Balfour Stewart, ship officers and newspapers in the U.S., Japan, Europe, Australia and even the aurora was also documented. As already reported one of the leading U.S. newspapers, the New York Times, that on Friday, 2 September 1859 occurred most amazing aurora can be seen very clearly from the city of Boston (USA). At the same time at Kew Observatory magnetograph noted geomagnetic storm for an hour.
Monday, February 22, 2010
Tornado
A tornado is a funnel-shaped wind vortex that formed in or on the cloud base and extends cumullusnimbus like proboscis to touch the ground. At the end surrounded by dust, water, or debris (depending on where the tornado formed) that come round. Color is affected by the tornado formation. For example, if a tornado is formed in the desert region is a golden brown color and the edges surrounded by dust and sand.
The word tornado taken from the Spanish "tronada" which means lightning storm. Another version says the word tornado comes from the Latin "tronare" which means to turn. There is also a saying that the word tornado comes from a combination of both. Meanwhile, another term for a tornado is "twister".
Very large pressure difference in the areas of local scale occurred under or near the cumullusnimbus cloud causes the formation of a tornado. In the process often begins with the appearance of funnel-shaped cloud vortex (funnel cloud). This causes a funnel cloud is often regarded as a tornado. Funnel cloud is a manifestation of the condensation funnel, without any wind on the surface. While a tornado is a vortex of strong winds. Water vapor that condenses causing a tornado funnel cloud looks like.
Tornadoes frequently reported appear to form a single vortex. Besides being a single vortex, a tornado also appeared with the same two large whirlpool better known as the twin vortex tornado. Sometimes, also comes with a large whirlpool surrounded by 2 (or even more) smaller vortex. Small vortex tornado is called a satellite.
With the wind swirling speed between 40 mph to 110 mph and range up to 250 feet (of about 75 m), is clearly damaging tornadoes. Moreover, a tornado can move up to miles and miles away. Whatever its path would be damaged and destroyed. Several tornadoes have some turbulence speeds up to 300 mph, range up to 4 km, and moved up to 219 miles. Scientists classify tornadoes based on damage caused. There are 3 types of scale used to classify tornadoes. There Fujita Scale (F) and Enhanced Fujita Scale (EF) made by Dr. T. Theodore Fujita. Scale for the weakest tornadoes are F0 and EF0, while for the strongest tornado F5 and EF5. Weakest tornado can damage trees, whereas the strongest can destroy homes and even permanent damage to a skyscraper. Similar scale is the Torro Scale with a longer range. T0 to T11 tornadoes for the weakest and the strongest tornadoes. Torro scale created by the Tornado and Storm Research Organization.
Tornadoes can occur anywhere except in Antarctica. Greatest frequency is in Tornado Alley, United States. While the smallest frequency in the tropics.
The word tornado taken from the Spanish "tronada" which means lightning storm. Another version says the word tornado comes from the Latin "tronare" which means to turn. There is also a saying that the word tornado comes from a combination of both. Meanwhile, another term for a tornado is "twister".
Very large pressure difference in the areas of local scale occurred under or near the cumullusnimbus cloud causes the formation of a tornado. In the process often begins with the appearance of funnel-shaped cloud vortex (funnel cloud). This causes a funnel cloud is often regarded as a tornado. Funnel cloud is a manifestation of the condensation funnel, without any wind on the surface. While a tornado is a vortex of strong winds. Water vapor that condenses causing a tornado funnel cloud looks like.
Tornadoes frequently reported appear to form a single vortex. Besides being a single vortex, a tornado also appeared with the same two large whirlpool better known as the twin vortex tornado. Sometimes, also comes with a large whirlpool surrounded by 2 (or even more) smaller vortex. Small vortex tornado is called a satellite.
With the wind swirling speed between 40 mph to 110 mph and range up to 250 feet (of about 75 m), is clearly damaging tornadoes. Moreover, a tornado can move up to miles and miles away. Whatever its path would be damaged and destroyed. Several tornadoes have some turbulence speeds up to 300 mph, range up to 4 km, and moved up to 219 miles. Scientists classify tornadoes based on damage caused. There are 3 types of scale used to classify tornadoes. There Fujita Scale (F) and Enhanced Fujita Scale (EF) made by Dr. T. Theodore Fujita. Scale for the weakest tornadoes are F0 and EF0, while for the strongest tornado F5 and EF5. Weakest tornado can damage trees, whereas the strongest can destroy homes and even permanent damage to a skyscraper. Similar scale is the Torro Scale with a longer range. T0 to T11 tornadoes for the weakest and the strongest tornadoes. Torro scale created by the Tornado and Storm Research Organization.
Tornadoes can occur anywhere except in Antarctica. Greatest frequency is in Tornado Alley, United States. While the smallest frequency in the tropics.
Waterspout
Waterspout is a tornado is relatively small. Usually formed in water. Twister speed between 60 to 90 km / h and lasted for 5 to 10 minutes. Though formed in the water, waterspout could move up to the land and destroy everything in its path. Waterspout usually accompanied by a fairly heavy rain. In fact, often accompanied by ice. This phenomenon often occurs in tropical regions.
Sunday, November 29, 2009
Lightning
Lightning is an atmospheric discharge of electricity accompanied by thunder, which typically occurs during thunderstorms, and sometimes during volcanic eruptions or dust storms.In the atmospheric electrical discharge, a leader of a bolt of lightning can travel at speeds of 60,000 m/s (130,000 mph), and can reach temperatures approaching 30,000 °C (54,000 °F), hot enough to fuse silica sand into glass channels known as fulgurites which are normally hollow and can extend some distance into the ground. There are some 16 million lightning storms in the world every year. Lightning can also occur within the ash clouds from volcanic eruptions, or can be caused by violent forest fires which generate sufficient dust to create a static charge.
How lightning initially forms is still a matter of debate: Scientists have studied root causes ranging from atmospheric perturbations (wind, humidity, friction, and atmospheric pressure) to the impact of solar wind and accumulation of charged solar particles.Ice inside a cloud is thought to be a key element in lightning development, and may cause a forcible separation of positive and negative charges within the cloud, thus assisting in the formation of lightning. The fear of lightning (and thunder) is astraphobia.
Thunderstorm
Perhaps that term sounded a little strange in our ears so often happens though. A thunderstorm is a natural phenomenon of continuous lightning strikes, which marked the emergence of cloud cumullusnimbus. A thunderstorm or electrical storms are often accompanied by heavy rain and strong winds. In fact, sometimes accompanied by hail and snow (if it occurs in an area that has four seasons)
All the places on earth has the potential to be the location of a lightning storm. The potential is greatest in tropical regions, especially the tropical rain forest areas. There, thunderstorms can occur nearly every day. An example is the Tororo and Kampala in Uganda, Bogor in Indonesia, and Singapore. While the strongest thunderstorms often occur in the Midwest and South State (United States). In areas that have four seasons, thunderstorms occur in the spring and summer. In cold climates such as polar regions, thunderstorms are rare. That's because the temperature is very cold polar regions. A thunderstorm is relatively unusual, occur in the United States west coast. But it is more common in the Sacramento and San Joaquin Valleys in California which is the interior.
If the amount of cloud water content cumulusnimbus known, the total energy of a thunderstorm phenomenon can be calculated. At medium power thunderstorm, the energy released reaches 10,000,000 Kwh or 3.6 x 1013 joules. The amount is equal to the power of 20 kilotons nuclear bombs. While the power of large thunderstorms can reach 10 to 100 x more powerful than the medium thunderstorms.
Thunderstorms save big danger. Each year, many people injured or even killed by lightning sting. However, the danger of thunderstorms was not on the sting. Real danger is that the impact of disaster thunderstorms like a flash flood, hurricane, waterspout, hail storms and snow, thunderstorms and even potentially create a tornado.
Until now, scientists continue to study the lightning storm. The storm chaser-scalled for scientists studying thunderstorms-go to the Great Plains (United States) and the Canadian prairies in every spring to study the visual aspects of the storms and tornadoes. They use the radio signals emitted by cosmic rays to examine the development of electric charge in thunderstorms.
All the places on earth has the potential to be the location of a lightning storm. The potential is greatest in tropical regions, especially the tropical rain forest areas. There, thunderstorms can occur nearly every day. An example is the Tororo and Kampala in Uganda, Bogor in Indonesia, and Singapore. While the strongest thunderstorms often occur in the Midwest and South State (United States). In areas that have four seasons, thunderstorms occur in the spring and summer. In cold climates such as polar regions, thunderstorms are rare. That's because the temperature is very cold polar regions. A thunderstorm is relatively unusual, occur in the United States west coast. But it is more common in the Sacramento and San Joaquin Valleys in California which is the interior.
Thunderstorms Strength
If the amount of cloud water content cumulusnimbus known, the total energy of a thunderstorm phenomenon can be calculated. At medium power thunderstorm, the energy released reaches 10,000,000 Kwh or 3.6 x 1013 joules. The amount is equal to the power of 20 kilotons nuclear bombs. While the power of large thunderstorms can reach 10 to 100 x more powerful than the medium thunderstorms.
Dangerous
Thunderstorms save big danger. Each year, many people injured or even killed by lightning sting. However, the danger of thunderstorms was not on the sting. Real danger is that the impact of disaster thunderstorms like a flash flood, hurricane, waterspout, hail storms and snow, thunderstorms and even potentially create a tornado.
Continued Learned
Until now, scientists continue to study the lightning storm. The storm chaser-scalled for scientists studying thunderstorms-go to the Great Plains (United States) and the Canadian prairies in every spring to study the visual aspects of the storms and tornadoes. They use the radio signals emitted by cosmic rays to examine the development of electric charge in thunderstorms.
Monday, November 2, 2009
Friday, August 21, 2009
Clouds
Clouds is a collection of lumpy water vapor in the sky. It is white (sometimes gray) and looks like a mounting pile of cotton. Clouds cause a decline in various kinds of rain as the rain water, snow, sleet. But sometimes the clouds not to rain at all. Besides the rain clouds also be the cause of lightning, hurricanes, and even tornadoes.
The process begins with the formation of cloud water dipanasai by sunlight. Then the water transformed into water vapor (evaporates). The mass of water vapor that is smaller than the air causes it to rise into the atmosphere. Finally, the collected moisture and clumping in the sky.
Clouds move because it is driven by the wind. The form is also not fixed (dynamic). Therefore, the cloud has become a symbol of freedom for some people, especially young children. The air temperature is very influential in changing the form of clouds.
The process begins with the formation of cloud water dipanasai by sunlight. Then the water transformed into water vapor (evaporates). The mass of water vapor that is smaller than the air causes it to rise into the atmosphere. Finally, the collected moisture and clumping in the sky.
Clouds move because it is driven by the wind. The form is also not fixed (dynamic). Therefore, the cloud has become a symbol of freedom for some people, especially young children. The air temperature is very influential in changing the form of clouds.
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