The education which gives special skills in some subjects.In technical education we gain theoretical and practical knowledge in using the machine and instruments.In Technical education we learn theoretical knowledge and know how to handle the machine to produce various things.Mainly education is of two types.They are academic and technical education.In academic education there is no well management of practical knowledge but we get the chance of theoretical knowledge.Some familiar examples of technical education are civil,mechanical,chemical,electrical and telecommunication engineering,agriculture,mining,weaving,pottery etc. Due to the development of science.many powerful machines are developed which makes the human life more comfortable and simple.The technical education broadens our mind.On the other hand for the development of country in various fields technical education is very useful.Really technical education is the progress of country.Technical education provides in the field of development works like agriculture,industry,transport,communication and so on.Most of the technicians of the country follow the scientific methods of agriculture and produce better and big quantities of crops.For the manufacturing of large quantities of goods technical education operates the powerful machine for this purpose.For operating telephones and wireless sets technical education is also necessary.With the help of technical education the people construct bridge,roads,factories,canals and so on.By the technical education people can drive aeroplanes,cars etc.Technical education makes the people self dependent.Technical education helps for research in various fields.Technical education produce well technicians in the country.If well technicians are available in our country then we don't give a lot of money to others for different puposes In context of Nepal most of the development works can not operate due to the lack of well technicians.So technical education has great importance.Another important advantage of technical education is that technical education gives the chance of employment for the people.Nepal is not forward in every developmental works.Its main reason is the lack of technical education .So we must give better priority technical education than the academic education.For this we must manage the technical education in the schools and colleges.
Wednesday, February 10, 2010
Computer Science
The branch of science which deals the study of computer design,information and scope in computer system is called computer science.Computer science gives the many information of networking and telecommunication about computer.The programmable machine that stores and retrieves the data from the user is called computer.Computer is also electronic device which works diffucult works faster than the man in short time.Computer is wonderful achievement of science and technology.The main parts of computer are desktop,mouce,CPU,keyboard and so on.Computer consists of many arithmatic and logical operations. In compute design there are mainly three types of units.These units are central processor unit,memory units and type-writer input output units.The hardware design of computer is divided into three parts.They are system design,logic design and circuit design.The software system of computer affects the hardware design of computer.Computer analyse the data or informations and produces further information that the manager wants to know.Hence the computer is most powerful and useful devices for human beings. With the advancement of science and technology,the importance of computer is increasing day by day.In the big bussiness firms and institutions it is not possible to handle all the works by the man.The computer does the work with very easily in short time.Computer helps to save our money and time.Computer does the work efficiently and accurately.Nowadays there are found to be many facilities of computers.Computer is used in various fields like education,banking,networking,accounting and so on.With the help of computer we play many games for passing time.Computer gives us entertainment also.In developed country like Japan and America computer is used for passenger reservation on railways.There are some drawbacks of computer.Computer makes us lazy and dull.Computer creates the problem of unemployment Because computer can do many works instead of people.In context of Nepal if there is well management of computer science then Nepal country may be developed in future.
Atmospheric Scence
The science which gives the structure,composition of gases,information and importance of atmospher is called atmospheric science.The earth is surrounded by the mixture of gases by means of air is called atmosphere.In real the air is invisible and we can just feel it.In atmosphere there are some principle gases.They are Oxygen and Nitrogen.Also there are few other gases like Water vapour,Carbondioxide,Neon,Helium,Hydrogen,ozone and so on.In atmosphere the amount of Nitrogen is 78% and the amount of Oxygen is 21%.Remaining 1% consists of other gases.We accept Oxygen from air and give out Carbondioxide.Green plants accept Carbondioxide and give up oxygen in the process of photosynthesis.In atmosphere there are found various particles.Nowadays the atmosphere is polluted by the man's activities.The smoke coAming out of the factory,industries and vehicles make the atmosphere polluted.Now the people cut down the trees for various purposes.Because of this the amount of useful Oxygen gas is decreasing and the amount of carbondioxide gas is increasing which is not important for human beings.It damages the balances of different gases in the atmosphere.If it does continuously then we must face difficult situation in the future.Hence the people of this world must think seriously about the balances of the atmosphere. Structure of Atmosphere:According to the different in temperature the atmosphere is divided into four layers.These layers are Troposphere Stratosphere Mesosphere Thermosphere. Troposphere:First of all we live in the troposphere layer.one layer of the atmosphere which closest to the earth is called troposphere.The temperature of this layer decreases as height is increasing.Nearly 75% of the atmosphere of earth lie in the troposphere layer.All the weather condition of the earth like most clouds,rain and snow take place in this layer. Stratosphere:The sphere which is extended from tropopause abou 50 kilometres above the surface of the earth called stratosphere.The ozone layer lie in the stratosphere.Ozone takes the ultraviolet radiatio from sun.In some amount the moisture presents into this layer so most of clouds are rare. Mesosphere:About 80 kilometres above the earth the layer is extended from the stratosphere called mesosphere.According to the altitude the temperature of this layer decreases.Specially strong wind blow happens in this layer during the winter. Thermosphere:The upper layer of the atmosphere of the earth called thermosphere.At the mesosphere it starts and continues into the outer surface.The thermosphere is divided into two layers.one is lower layer where the oxygen molecules are found in the form of atom.The another is outer layer where the Hydrogen and Helium are found.
Environmental Science
The science which deals the study of structure,effects,importance and informations of environmental pollution and its solutions is called environmental science and technology.The environmental science shows the interrelationship between nature environment.The broad terms which consists of all living beings called environment.The environment also consists of non living beings like topography,climate,soil,minerals and so on.Man produces various things by his talent,knowledge and wisdom.The environment is classified into natural and man made activities.As a result the environment is polluted by different activities of man is called environmental pollution.The smoke coming out of the facteries,ndustries and vehicles make the air polluted.Trees are our friend.They take carbondioxide a pasion,the air gives us life living oxygen gas.But the people cut down the trees for various purposes.In the absence of trees there creates the problem of soil erosion and causes the rainfall.Thus the air is polluted.The land is also polluted.Then there takes place the problem of sound pollution.The environmental pollution has negative effects on the help of the people and economic aspects.It brings unfavourable weather.Environmental pollution causes draught,landslide,soil erosion and flood causes decline in agricultural productions.The people may suffer from different dangerous diseases. So it is clear that environment should be saved for the common benifit of human beings.The government and people all over the world think seriously to adopt measure to environmental pollution.For removing the environmental pollution there must be well management of environmental education in schools and colleges.To control the environmental pollution we never cut down the trees.For this we should give the importance of environmental science to other peoples.Also we must follow the scientific methods to save the environment.
Health Science
The branch of science which explains the benifit,effects and research of health problems of the people is called health science.We have already known about "Health is Wealth".Healthy man is happy and he can earn wealth.An unhealthy man can not be happy.A healthy man is also bold confident.He does his work with very easily and get success in his life.Healthy man can work better and harder and he does not lost his hearth.But unhealthy man is timid so he can not do any difficult work.He can not get success in his life .Also he has no strength of mind.Many things are necessary for keeping good health.First we need pure air.Then we also need clean drinking water.We need good food.We must do physical exercise for better health and rest for good health.Dirty water is the main source of many diseases.The another important thing for better health is balanced diet.We must use plenty of milk,eggs,green vegetables,fish and fruits in our daily life for good health.Physical exercise plays vital role for health.The health science tells us important fact that is "prevention is better than cure. For the development of the country depends on the health of the people.so there is the great scope of health of people.Health science provides the health education.With the help of health education people should be taught how to be healthy.Health educaion should be introduced in the shools.Then the cildren know the importance of health and they can be happy.Health education encourages the hospitals and health posts for the treatment of health problems.The hospitals has great scope at the time of emergency,accidents etc.At the time of accidents and emergency the hospital saves the life of the people.In hospitals there must be well management of doctors,nurses,health assistances,compounders and stocks of medicine for treatment.By the health science most of the health orgnisation give the introductions of many diseases and idea for how to control these diseases.Also health science participates the community health educations.The community health education gives the discovery of diseases.
Scope of Science and Technology
First science and technology is great achievements for human beings.Science and tehnology makes everything possible.The primitive people passed very difficult life.They had no any knowledge concerning of science.They didn'n know how to pass comfortable life.By technical science ,man has done tremendous progress in the field of agriculture,transport and communication,health and so on. As a whole science and technology is the symbol of human civilization.Science tells us that it is the technique of success.There are development made by science in different fields such as Food:Food is the necessary thing for us.Now we follow the scientific methods for how to grow big food crops.Nowadays the scientists are trying to grow crops in water without soil. Clothing:Science developed modern clothes.So the people wear variety of clothes. Shelter:Gradually people learnt to make houses of attractive design from science. Health:Science gave many idea about health.Science introduced dangerous diseases like AIDS,Tuberculosis and so on.Science developed the medicines for the treatment of the people. Transport:Science has developed modern means of transport.So people can travel quickly and safely by modern means of transport like buses,cars,aeroplanes,ships etc.With the help of jet planes we can round the whole world in twenty four hours. Communication:Communication makes the human life very simple by telegraphs,telephone,wires and so on.Commnication has great importance for the life of the people. Power:For the different kinds of hard work power is necessary.Because of the power of machine,human life is cmfortable.
Physical Science
Physical science is branch of science which deals with the study of natural living and non living things or matters and expands the imoprtance of this science.On the other hand physics is the on form of the mathmatics because mathmatics modified the physical science.Everything in this universe is the creation of physical science.Without physical science the discovery of other sciences is not possible.So physical sciences has great importance compared to other science.Physical science gives many information in the developmental works like engineering,doctors,agriculture and so on.Physics deals with the study matter and energy.
Really in the stone age the man passed very diffiucult and miserable life.They didn't suffer the facility of science and technology.They didn't know how to pass comfortable life.While physical science developed,then the man suffered from the various facility science.Then the physical science makes the life of the people simple and comfortable.With the help of physical science the scientists invented modern instruments and machines which make human life confident.The achievements of physical science are to many to count.Physical science has changed the entire world.It is not the same in which our ancestors lived.If there were to retern now to earth,they would no recognise it.In the othere sense physical science made our life trouble free.Very fast means of communication and transport have made the world smallers.
Some familiar examples of achievements of physical science are telephone,radio,television,aeroplanes,jets,ships,computer,laptop and so on.Electricity is another gift of physical science.The advantage of electricity are unlimited.It lights our houses,shops and streets.It can be use in our factories for doing hard work.Physical science has given us wonderful medicines.It has conquered epidemics.Now even the brain can be operated upon and many vital organs can be transplanted and we can live a longer and healthier life.Physical science has proved great blessing and it has given us many wonderful inventions.Physical science formulates other sciences like chemical,biotechnology,astronomical,earth sciences.
There are some basic fundamentals of physical science.In physical science we take the knowledge about force,motion,electricity and magnetism,etc.Physical science helps us for research in different fields.Physical science gives the knowledge of nuclear phenomenon.So if the government are allowed the physical science compulsary then the country may be developed in future.
Population Education of Science
First of all population education is one of the most wonderful achievement of science and technology.The science which deals about what is population and its importance,what are the problems of population growth in this world and how to control the population growth is called population education of science.According to the population science,the number of children,boys,girls,adults and old living in the area or country is called population.The population education of science also gives the density of population.The counting of number of people living in a place is called census.The census is taken in the interval of fixed period.In context of Nepal the census is taken in every ten years.The number of people living in the certain area or country is called density of population.For the development of nation population plays vital role.Mainly human resources are essential for production.They are also essential for social,religious,cultural,political and scientific progress..The human resources should be properly used.They should be provided good food,clothes,shelter,health care and education. There are so many regions for the population growth in the world which follows as Illiterate:Illiterate people did not know the importance of population control.They are not educated on how to control people.Poverty:The poverty people in the world think that if they give birth to many children,they will be involved with them in their work. Difference between the death rate and birth rate:Because of the education of dangerous diseases like malaria,small pox,cholera the rate has decreased but the birth rate is constant. Disadvantage of population growth:
Uncontrolled population growth has an negative effect for the development of nation. If there is uncontrolled population growth,A large parts of national income has to be spent on the basis need of people like fooding,housing and clothings. In world,the population growth is serious problem.
Control of population growth: Measures should be immediately taken to check population growth. People awareness programme should be carried out. The people should be taught the effects of uncontrolled population growth with the help of different media. Family planning is an effective measures of controlling population. We can also control population by late marriage. Special incentives should be given to those who give birth to two babies only.
Introduction of Science and Technology
The systematic study of living and non living beings is called science and technology.The science gives the scientific and complete theories about the various subjects.As a whole the science increases the scientific knowledge for human beings.There are great importance of science and technology.The science formulates the modern technology which makes the human life simple and comfortable and changes our life styles.Science and technology is the foundation of development.The education of science and technology changes dark into light.Science and technology makes a man perfect.So science and technology is the light of life.Science and technology is backbone of development because it provides both administrative and technical manpower which is very essential for the nation. The branches of science: Mainly there are four branches of science.They are Physical science The life science The social science The Mathematical Science Physical Science:The branch of science which gives the study of nature of the universe is called physical science.The physical science explains the structure of the non living matters.The physical science consists of Astronomy Chemistry Geology Meteorology The link Physics is related with matter as well as energy.In physics we can study about mechanics,heat,light,sound,electricity,magnetism and properties of matters. Life science:Simply the life science is biology.Life science gives gives the systematic knowledge of living organisms. Social Science:The branch of science which gives the explanation of human society.For human behaviours the social science establishes the social laws.The social science consists of Anthropology Economics
Political science Psychology Sociology
Mathematical Science:This science important tool for solving many numerical problems and drawing the scientific conclusions.This science also provides the various logic.
Zoology Science
The branch of biological science which deals with the animal kingdom as well as animal life is called Zoology science.Mainly zoology science gives the systematic and complete knowledge of animals.The zoology science explains the different between the plants and animals.For studying the biology in the various levels of organisation the zoology science is more sufficient. Contents of zoology science: scope and fields of zoology :Diversity of life :Study of system of animals and embryology :Animal tissue and histology of different organs :Evolution :Economic zoology :Animal diseasesAnimal behaviours. Scope of Zoology science:The scope of zoology science can be explained under the following headings- Economic Value:Zoology is of great scope in the economic value.For studying the medicine,agriculture,nursing,insecticides,conservation of wild life the zoology science is an essential.In zoology science with taxonomy,pests and parasites are identified and their control measures are provided. Aesthetic Value:The zoology science is applicable for the approach of aesthetic.Zoology shows the variety,colors,behaviours etc of the animals. Literary Value:The zoology science is responsible for the field of literary.The zoology science also gives us how the animals are adjusted in the environment.For the future work or study the zoology science plays vital role.In this way the zoology science enables for research and origin of various animals.
Cytology Science
The branch of science which deals with the study of form,structure and functions of cell is called cytology science.The cytology science also gives the behaviours of nucleus and other organelles.Cytology science enables for the origion and discovery of cells.Mainly cytology sience formulates the cell theory.The body of organism is made up of cells and their products.Both the structure and function of living organisms is called cell.Life passes from one generation to another generation in the form of living cells.Different types of the cells in the body does work in organisms.According to the cytology science various cells of the body are independent.The cytology science divides the cell into two parts.They are plant cell and animal cell. Plant cell:The plant cell is covered by cell wall.Plant cell has a definite form because of presence of cell wall.Generally chromosomes are absent in the plant cell.The plant cell contains green chloroplasts and plastids.Typical lysosomes are generally absent.Glyoxysomes occurs in the same plant cell.A mature types of plant cell contains single central vacuoles. Animal cell:The animal cell is not covered by cell wall.The animal cell has not definite form due to the absence of cell wall.Specially chromosomes are present in the animal cell.The animal cell do not contain chloroplasts and plastids.Typical lysosomes are generally present in the animal cell.Glyoxysomes does not occur in the same animal cell. Behaviours of nucleus: The nucleus is bounded by protoplasmic body which controls cellular metabolism and transmission.In outline the nucleus is of elliptical shape.Mainly nucleus consists of-
Nucleon envelop Nucleoplasm Chromatin Nucleoli structure.
Astronomy Science
The branch of science which deals with the study of form,structure and features of planets,moon,galixies,stars and some other objects in the space is called astronomy science.A person who study about the astronomy science is called astronomer. Moon:The astronomy science explains with the study on what the moon is like,how the moon moves and how the moon was formed.According to the astronomy science,the moon lie earth's nearest in space.on the other hand moon is the brightest object which can be seen on the night sky.The moon has no light of its own.From the research of astronomy science we found the distance between the centre of earth and the moon is 384,403 kilometers. In comparision to the earth,the moon has no life.In moon there is no air,wind and water.Moon is in the form of smooth globe.One of the Italian scientist Galileo observed the moon with the help of small telescope and gives the various features of moon.In moon there is no probability of atmosphere aand weather.The moon is bounded by some layer of gases.Also in moon there is weak gravity so these gaseous passes away into the surface of space.In comparision of any place on the earth,the temperature is found to be much hotter and colder in the surface of the moon.The moon moves around the earth in an elliptical orbit.The colour of the moon is found dark raddish.When we look up at the moon,we always see in the same side.Due to the phase of moon the shape and size of the moon changes.In real moon is close to earth so the size of the moon is larger than that of stars.
Ecology Science
The branch of science which deals with the study of living beings and shows the relationship among the plants,animals and their environment is called ecology science.All the living beings and non living beings is called environment.There are mainly two methods of studying the ecology science.They are autecology and synecology.The method in which the ecologists follow the single species ahd show how these species are related to their environment is called autecology method.Some ecologists follow the different methods for how the different species are realated to the environment is called synecology.The synecology method is also known as ecosystem approach.For studying the knowledge of natural world these two methods play vital role.From the ecology science we found that the environment is affected by the organisms at a time.Ecology enables us to understand the human activities.Ecology has great importance for the future of the man. Approaches to Ecology:
Botanical approach Zoological approach Biotic approach Habitat approach Ecosystem approach Productive approach. In ecology science,there are two types of ecological factors.They are the physical environment and biotic environment. Physical environment:All the non living things lie in the physical environment.The physical environment consists of temperature,soil,water,etc. Biotic environment:All living beings lie in the biotic environment. Mainly there are two sub division of ecology.They are animal ecology and plant ecology.The animal ecology deals with the study of form,structure and features of animals.The plant ecology deals with the study of form,structure and features of plants.In this way the ecology science explains how the plants,animals and environment are related to each other.