The Electrical Charge Distribution in a Number of Nuclei is not observed

 The Electrical Charge Distribution in a Number of nuclei is not observed

It had been inferred from the experimental observations that the majority of átomic nuclei are spherical or nearly spherical in shape. The electrical charge distribution in a númber of nuclei is not observed to be spherically symmetric which is indicated by their electric quadrupole moment. The radius, R, of various nuclei can be approximately given by R = RoA/3 where A is the number of nucleons and Ro a constant which is found k differènt: thods and lies in the range of (1.1-1.5) x 10-15 of measui nent of size are based either upon the effect of ele to distribution of electric charge in the nucleus when probed by electron or mu-meson, or the effect of nuclear forces which are sensitive to the distribution of nuclear matter in the nucleus when probed by nucleons or light nuclei.

 The size of the nucleus was earlier estimated from Rutherford's experiment başed on scattering of alpha particles by various atoms. It showed that larger is the angle of scattering through which a particles get scattered, closest įt approaches the atomic nucleus, A rough estimate of R can be made from the distance of closest approach of an alpha particle (2He') of charge 2e, mass m and velocity, v to, a nucleus of charge Ze.

If the kinetie energy is equal to the repulsive Coulomb energy between-these two particles, it comes to rest momentarily such that the distançe of closest approach R is given by m.

Géneral Properties of Nuclei in Astronomy

 Géneral Properties of Nuclei in Astronomy

Constituents of Nucleus and Their Intrinsic Properties Rutherford's experiment on the scatterii falpha particles by mětallic foils was aimed at estimating the distancé of ciosest approach of än alpha particle nearest to the inner core of the atom, i.e. the atomic nucleus: It.was possible to estimate the size of an atòrmic nücleus from the Coulomb repulsive force berween an alpha pårticle of positive charge approaching the atomic core of positive charge when these' are separated by the shortest distance.

 It-was conclusivèly proved that the centrál core of an atom consists of a nucleus which is approximately spherieal in shape with rádius varying between and 10-13 em having a net positive charge.

 Prior to the discovery of neutron, proton-electron hypothesis was proposed on the basis of which the atomic nucleus wàs considered to Be composed of protons and electrons. It was assumed that electrons and protons were present within thě nucleus żXA which will have A protons and Z electrons pre-existing within the nucleus. 

It çould account for mass and charge of the nuçleus and explain B emission by nuclei but could not explain other properties: The electron-proton hypothesis of nuclear structure was rejected because it was contradictory to. the experimentally observed nuclear propeities.

 It was after the discovery of neutron by Chadwick as a pårticle with mass of about 1.67 × 1027 kg and equal to that of a proton but without any charge, that Heisenberg proposed neutron-proton hypothesis of nuclear structure in 1932. It was then well established that the atomic nucleus consisted of the protons, each of mass 1.6726 x 10 27 of mass L.6749 x 10 kg without any charge.

The Earth's Ionosphere And Terrestrial Radio Communications

The Earth's ionosphere and terrestrial radio Communications

  The Earth's ionosphere and terrestrial radio communications are disrupted by flare X-rays. The solar ultraviolet radiation is greatly enhanced during solar flares. Sometimes, a single flare may outshine the entire Sun in ultraviolet radiation. Ultraviolet lines are generally enhanced but the L line remains remarkably unchanged during flares. It is interpreted that this line probably is radiated from the entire chromosphere. The Sun is the nearest source of cosmic rays. 

During large flares some of the solar (protons, eiectrons and heavier nuciei) are accelerated to very high energies-particles with energies even higher than 100 eV have been observed The highest flux of particles occurs, of course, in the MeV range. These high energy rays whose composition has been found not to differ significantly from the normal composition of the Sun itself. The most abundant particles are protons. Next comes the Alpha particles, and so on. The fraction of the flare energy contained in the flare cosmic ra s is, of course, quite small, usually less than one per cent. The particles are believed to be accelerated in regions of high magnetic field gradient but no entirely convincing explanation of the origin of solar cosmic rays has yet been established.

 Several theories have been proposed by various authors to explain the origin of solar flares. Flares have been speculated as manifestations of clectrical discharge. It has also been conjectured that flare energy might be produced by nuclear reactions in the surface layer of the Sun. Since both these theories have later been shown to be highly improbable, we shall particles are the solar cosmic not discuss these any further. Although none of the flare theories so far proposed appear completely satisfactory, we shafl briefly discuss two of the theories which can explain manyat the observed charactenstics of flares. Both these theories are based on the high magnetic Kelds in sunspot regions.

 Observationally, it is found that flares occur mostly in regions of complex spot groups, where magnetic fields are high. Magnetic fields of a few hundred gauss can supply energy of the order of a few times 10 erg cm, as flares are observed to possess (using E = B-18 TC). But the theory must also explain the extreme suddenness of the release of this energy. Severny proposed that flares originate as a result of magrnetic discharge near an X-type neutral point which may arise by interaction of fields of two neighbouring bimmagnetic spots in a complex spot group.

 The magnet field gradient is very high near neutral points. The intermetion of spot groups may initiate a kind of perturbation, which may trigger the magnetic discharge. thereby suddenly dissipating large amount of magnetic energy and neutralizing.

Indicate that the rate of flare production associated with any particular

indicate that the rate of flare production associated with any particular

Flares per day of importance higher than or equal to I is - R/25, where R is the supe number given by (5.2). Thus, if R = 100 on any day, four flares of importance 21 can be expected. Since subflares are several times more numerous, if these are taken into acov a flare every hour will be more natural.

 Since flares originate almost always within abow 100,000 km of a spot group, the flare distribution on the solar disk bears close correspondenc with the distribution of spot groups. Further, quantitatively, observations indicate that the rate of flare production associated with any particular spot group depends on the area A of the spot group and on the time rate of change of the area dAldt.

 A typical flare has a surface area 5 x 10 cm (assuming radius = 4 x 10° cm and circular shape) and a height of -2 x 10° cm so that the typical volume is - 1029 cm. The total energy outpu' for such a flare is - 2 x 104 erg, so that the average energy density in a flare is - 2 x 10 erg cm. Most of this energy Is emitted in corpuscular radiation. Although flares radiate in most of the frequencies of the electromagnetic spectrum, from X-rays and rrays to long-wavelength radio waves, and also relativistic particles (cosmic rays), most of the energy is emitted in X-rays and ultraviolet radiation. The energy emitted in optical range is not too large, may be about 10 per cent and that in radio waves and cosmic rays is insignificant.

 Like size and intensity, the spectrum of flares also differ greatly from one another. In large flares the continuum is strongly brightened, but in normal flares of moderate importance the brightening of the continuum is not very marked, except over a region surrounding H H itself is observed in strong emission with large symmetrical emission wings.

 The wings, however, fade away quickly after the onset of the flare, while the flare may still linger. The central intensity of H becomes three to four times that of the continuum and the width may be as large as 15 Á.

Climate is related to the environment in a wide area rain fall

 Climate is related to the environment in a wide area rain fall

 

Rain falls on the earth as it is only in the form of water, when the moisture in the air is in the form of water on the earth.  Rainfall is mainly divided into three parts: the rainy season (Conventional Rainla 1), the rainy season of the rainy season. Earth's surface is becoming more hot on air. 24 30: It is cooled up, resulting in rain fall in the rain.  Summer and rainy days, especially in the equatorial regions, have 2 to 4 rains every afternoon. Orographic Rainfall: | Windy Winds  When high mountains come on the highway, the wind rises to cross the mountains, and due to the decrease in the temperature, there is a heavy rainfall. The wind is more prone to the direction of the wind from the direction of the wind, and it is called the windward side of the mountain and the rainfall behind the pucco remains low.  The side is called the 'windfall' or 'Rain Shadow Area'.

 Cyclonic Rainfall: The Moon's Tornado  This type of rain is more frequent in semi-tropical regions.  Note: The line is called Isdhyets line connecting similar rain falls in the world map.

  Weather and Climate  In the context of temperature, pressure, wind and moisture in a particular place, the short-term conditions of the atmosphere in conjunction with the weather mean (ie).  Different types of weather can be experienced in one place according to the seasons.  Weather conditions can change in several hours or days.  D.  I  Cloud and rainy weather can last for a few days.  The temperature, pressure, humidity, etc. of any place in the air.  Long term conditions are called climate.

 Climate is related to the environment in a wide area, climate is an average of long-term weather.  Factors influencing the climate include latitudes, ocean distances, winds, and their direction, height, forests, ocean currents etc. where there is a very different variation in the temperature of cold and summer, which means that the annual temperature decrease is low, it is called climate.  And the climate where the difference is high is called an ominous climate.  .

  The first Greeks (UNANO), according to the temperature, will eat 6.  In temperate and cold tropics, the German geographed Platinum Coppe, based on the climate temperature, precipitation and vegetation, in 1928), was coined in 1928 on the basis of classification of climatic factors,

Silent Valley movement in tendra ecosystem

 Silent Valley movement in tendra ecosystem

This fisherman can fish in the lake because of local fishermen.  1 local fishermen not fishing in the lake 2.  Due to the large complexes built on the shore, one mudhu will be destroyed by the large grasslands.   The water from the reservoir will be polluted due to which the food will be discharged.  And so the surrounding sea creatures will also be damaged.  Faced with the sound of the machine, migrated burs (foreign birds, migratory birds, and distant birds) will stop coming there.

 Considering all these reasons, the campaign to save the Chilka has spread all over with the help of local fishermen and environmentalists (environmental scholars).  Thus, in October 1992, the Central Government decided that the challenge to the Tata project would not be given to the environm aental issues, and in November 1993, the Orissa High Court ruled that this project was not favorable to the ecological situation of Chilka Lake, but the meaning was heavy on the environment, and due to the encouragement of outside forces, many fishermen  Binds to start shrimp farming  They have support from big business houses.  And government technologies can not even stop these fishermen.  The spread of pollution through them.  It's also going on today's date.  The simultaneous movement is also going on.  This demand is currently on.  That shrimp farming should be completely banned in this area.

 Silent Valley movement:

There is a rainforest area in Kerala.  Planning to build dams on many pristine trees and plants and rare animals in Kunti Praja river in 1960 • Kerala Shastra Sahitya Parishad is a network of local rural teachers and locals.  Which promote environmental science in rural areas.  He proved that there is a lot of local people's economic needs but these needs can not be done in any way by the construction of the dam.  He strongly opposes this project and the people's point of view is from this area

These cliffs became the first to be created after the origin of the planet

These cliffs became the first to be created after the origin of the planet

It's been easy.  Key  All the rocks 1, Igneous Rock: The cliffs are composed of volcanic eruptions, Ram Ka Kalinga La (Magina).  In the earth or in the middle of the cold 2  I  Granites, basalt, paramette, diarrhea These cliffs became the first to be created after the origin of the planet and all the other so that it was said to be called primary blood pressure, so this was made from the cliffs, so 1 "comes from." This coop is rigid and granular, it does not contain germs.  It is called Plutonic Igneums Rocks, if the lava gets absorbed inside the Earth. If the abdomen is inserted in the middle then it will be called the Internet Igneous Rocks.

 If it is found on the outer surface, it is called outer integral rocks or a volcanic rock. In the terms of chemical composition, the igneous rocks are divided into 4 parts based on the mixture of silicon (acidic acid, acidic rocks:  More than 650% silica medium rocks 55 - 65% silica basal rocks: 45 - 55% Silica Alha Basal rocks: Silica basalt is less than 45% outer igneous rock, it contains iron quantities  It is due to its fact that black clay is produced, which is called Ragur, it is said to be two sad, basic cliffs and potharin plains to the far. Srenet and Sadiq are the igneous rock, so much so that the amount of silica is too soon.  This has created a mountainous structure.

 Watershed - The igneous rocks are identified by different names depending on the shape, form, state, etc.  Dyke: When the windmill jumps like a high wall 2.  Uo Da, Zarakhanden.  .  Many dike has been found in the lionbhum district.  Sil: Whenever in horoscope, in horizontal parallel, in May  D.  Chhattis and Jharkhand are found.  Silicone sheet, with thick thickness of less than one meter, is called laeolith: when the maggie enters the dome and shape.  Plhaeolith: When Ma'maya

The black tick or pits seen on the surface of the Sun are referred

The black tick or pits seen on the surface of the Sun are referred

Hi Surin as well as another.  The stars move around the center of the galaxy in a circular way.   Cutting a faint around the Suryan galaxy.  It takes 22 million to 50 million years, which is called the universe year.  Its speed is 250  Km.  Is seconds

    The sun is a star.  From which the planets have come out.  The sun is the birthplace of the solar system.  The sun moves from east to west on its axis.  Period: - 25 days 5 hours, its surface temperature is 6000 ° C.  And the center temperature is It is a gauge bulb that contains 7-10% hydrogen, 26.5% helium and 2. 59% other elements. Its energy source is its nucleus, which is conver.

ted into a hydrogen helium. 93,000 km (109 times greater than Earth) is more than 1. 41 times higher than the density of the Sun. The Sun's rays reach the Earth at 8.3 minutes, the Sun's surface is called photosphere, on the shores of the photosphere.  The Sun's atmosphere is absorbed by the Sun. It is called the colormiar, which is red in color.

The black tick or pits seen on the surface of the Sun are referred to as Raval Co, which are the clusters on the surface of the Sun.  Temperatures are 1500 ° C, which passes through every 11.5 years of age, during which time the temperature of the Earth increases, the Saurajwalias are called the Rora Bore on Earth's North Pole  It is called the Aurora Australis on the Eli and the South Pole, while the sun is at the time of the solar eclipse, which is called the corona, which emits the X-ray, which is also called the curved of the sun.  At the time of complete solar eclipse, the kind of corona receives.

 The tool to know the substance contained in the sun is called spectroscope, the black lines found on the surface of the Sun, called fronohofer lines.  The sun's age is 5 billion years.

Due to the roughly eight months of the year

  Due to the roughly eight months of the year

  Tundra means ystem desert land.  This ecosystem is found in A-parts.  Where the environment is very difficult.  There are two types of tundra.  Arctic tundra and alpine tundra. There is very little presence of sunlight here.

  Due to the roughly eight months of the year, it remains frosty.  At the same time, the time of plant growth is less than 50 days.   A lot of area of ​​the Arctic area is Paramrostost.  (Parmafost means clay or rock which has been hidden from ice for temperatures less than 0 ° C for two consecutive years)

  Arctic tendr is spread across a long line on the tree line and under the polar ice sheath.  .  Which is spread across the island communities of northern Canada, Alaska, Russia, Cyberia and Arctic Ocean.  When the area of ​​small cluster tunda on the south pole is very small.  Because a large part of it is covered with sea.

 In the tundra ecosystem, the growth of vegetation is unbearable due to cold growth and lack of sunlight.  Therefore only 3% of the world's total vegetation is present in this area.  Tunda is 5 to 8 cm in height and vegetable is bushy.Bank for International Settlements.  Appointed as representative.  Siril Ramkosha Chief Guest in the 70th Republic Day celebration ceremony of 2019 India.  CRPF in Jammu and Kashmir will be able to remove 'Essential 31' terrorism.  1 from the curse 

 The 10 million-year-old man has been suffering from the east.  Mental speech of former President Pranab Mukherjee at IIM-A  Brigadier Kuldeep Singh Chandrapuri passed away in 1971 - India's war hero Brigadier.  The famous 'Adagoor' Padma Shri El K. Padamsi's death  T In 14 West Bengal, 14th November, Rasgulla day was celebrated. 14th edition of the International Children's Theater Festival, which was held in Guwahati, "Juran childhood" took place.   AYUSH Ministry has celebrated the first Naturopay day of 18th November, 2016.  From 2019, the definition of kilograms will change