RADIO | Definition, Usefulness & Fact | Why Radio Close Relationship Among The peple ?[BEST ESSYA]

RADIO                                                                                               

RADIO

WHAT  IT   IS:

Marconi with his invention(Radio)

The radio is a wireless  receiver through  which we hear sound of messages sent from distance places  of the world . Sound or messages of any kind are sent by means of electrical waves to distant places  . This is called broadcasting .It was ,Marconi ,the great Italian scientist  who first invented wireless in 1894 . The wireless apparatus has two parts ;  the transmitter  and the receiver .It is popularly known  as the radio .In a Radio  we may hear messages ,songs ,plays , etc . Broadcast through a transmitter  from some radio station .

IT`S POPULARITY: 

 

Since its invention wireless has made rapid progress . Besides, it has earned great  popularity .The radio has been very common now -a -days . There is hardly any family without a radio.

THE USEFULNESS OF RADIO : 

radio

The radio helps to remove the dullness of hard working life. Various  programmes  of the radio is not only a means of giving pleasure or joy .It has great  educative value . Learned talks and speeches broadcast from distant  centres  can  be heard through the radio and we can learn many things from theme . Besides, we may come in immediate  touch  with the happenings around   the would listening to a radio . Even the illiterate people  can learn many things listening to the news and speeches  in a radio . It is ,therefore, considered  to be a necessary medium for giving institutions. Every school  or education institution is expected to have a radio  now -a-days .

songs and plays please the mind of the listeners . It really makes a home happy .It gives life and joy  to the hardworking men and labourer s.,

MAINTAINS CLOSE RELATIONSHIP AMONG TH

The radio has enabled us to maintain close relationship  with the people of different parts of the world . Distance is no barrier  now -a-days .We may remain in immediate touch with the people living far apart with the help of radio .

EVILS OF PARTY PROPAGANDA : 

Sometimes ,however ,broadcasting is taken as  a means of serving party politics . Such news or messages may sow seeds of disruption  or resentment among the people . This   should be  checked , for evil things spread through  the radio may  prove  dangerous .

CONCLUSION :  

                           The radio thus has been considered to be a blessing to mankind, and humanity to-day stands indebted to its inventor..

 😀😀😎

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computer

computer                                                                                                                

computer

WHAT IT IS : 

The computer is a  an electronic machine that can solve various problems for us.Raw facts or data are provided to the computer.Then it processes the data and produces meaningful and desired output known as information . The computer needs clear cut instructions to tell it what to do , how to do and when to do. A set of such instructions is called a "program" .Once programmed and set to work a computer works  very fast  and gives us the desired results .

HISTORY :

history of computer

Computer history starts with the developments of a devise called  "abacus"  by the Chinese around 3000 B.C. It was used for calculation of the arithmetic operations . But it is Charles  Babbage who is known to be the father of the computer .During the the first decade of 19th century he developed a machine which had provisions for putting data , storing information , performing arithmetic operation and printing  out results . This provided  a base for other modern computers .The first modern electronic computer was built in 1946 by Thon Manchley and J.P.  Eackurt  and it is called   ENIAC  .

TYPES OF COMPUTERS:

Computers can be classified into two types -Digital ,Analog and Hybrid computers . These computers may be either 'special purpose computers ' or 'general purpose computers' . Special purpose computers are designed  to meet the requirement of a particular task  or application  . General purpose computers are designed to meet requirement of many different applications  . Then again ,according  to the size and capability computers may be classified into four categories ----Micro computer , Mini-computers , Main frames and super-computers .

       

micro computer

  

mini computer

  

main frames

super computer

USEFULNESS:


 Computers work very fast  and save our time  and labour. It can perform complex calculations rapidly and accurately ,store large amount of data and information , make decision  , provide information to the user  and draw an print graphs . Engineers and scientist  make use of the computer to solve  complex research  and design problems  . Without it many technological achievements ,such as landing on the moon ,would not have been possible . Computer have helped automation of many industrial and  business systems . They  are used extensively  in manufacturing and processing  industries, weather forecasting ,power distribution system , and airline , and railway reservation   systems banking  systems , transportation systems, and so on. It is also used as diagnoser  of  different  diseases. The 'Catscan machine ',used in hospitals for medical diagnoses contains  computers.
                      
                               Business  and commercial  organization need to store and maintain voluminous records . They are now stored up in computers . The ability of computers   to store  large  amounts  of  data has led  to  their application ip  libraries ,employment exachanges  police department , hospital , offices ,and other similar establishments . They are also  used in international  games ,such as the Olympics and in films industry .Computers are further used as resources in teaching  and leanring   at all levels of education and training . Children  can play different   educative games  make drawing and paintings  watch films and songs in computers. The master copy of and books and writings  can be printed in computer . This process is known  as 'Computer assisted learning (CAL) . Computer are also used  to manage the learning processes   .  This is called Computer  managed learning  (CML)  . Of late the 'INTERNET'     system has been Introduced . By this system we can communicate to other computers through our own computer arid 'get all kinds  of information . This system is called  W.W.W   (Would Wide Web  )  . The whole   world  of  'INTERNET'   is called  cyberspace .

ABUSES :   

  A  Computer with  an operator  can do works of  hundreds of person in a day  .Hence , it is feared  that if it is  introduced  in large  scale it may aggravate  the problems of  unemployment  . Moreover  , it is said that computer  screen emits  some harmful rays  (electromagnetic) ,radiant energy and heat .  It may  cause failing eye-sight , cataract , body pains , miscarriage and birth defects. so ,  computers workers  must be very careful  to protect  themselves from these harms   .    

limitations :   

 The computer cannot perform any work  without man .  It  has no brain of its own brain . Anything it is  does is the results  of human  instructions . .

conclusion : 

man has invented  many electronic devices , but among them   the computer has made greater impact on society . it really is a wonderful    invention of science . 

😀😀😀   

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NEWSPAPER #1

  NEWSPAPER                                                                                                                                        

  

newspapers

DEFINITION  :

Newspapers are the record of current affairs . It is the medium through  which public opinion finds expression  . Various items of news are  published in the newspaper .

            All classes of men- businessmen , teachers ,  students , lawyers, players , finds some items  in the newspaper that may interest them . The government  gathers  public  opinion through newspapers.  Thus it is very important in the life of a civilized  nation today .


CLASSES OF NEWSPAPERS :

There are  different class of newspapers .They are dailies , weeklies ,bi-weeklies etc.Daily news papers have been most popular now-a-days.The weeklies and bi-weeklies also attract us with valuable and scholarly  articles publish in them.

THE USE OF NEWSPAPER:   

We cannot think  of living now-a-days without newspapers.it is considered to be as useful and necessary as food.People of any profession feel the need of going through the headlines of newspaper after breakfast.Students, teachers, lawyers ,businessmen cannot do without newspapers.New thoughts and ideas can easily and promptly be spread among the people of different parts of the world through the newspaper.To the businessmen  it is very useful.They can easily have business information through newspapers.Newspapers have enabled us to come in close touch with the people of
different parts of the world.The news of an incident happening at a distant part of the globe may be found in a newspapers.Besides, we can exchange our opinion or ideas regarding something through newspapers.

EVILS OF MISLEADING OR EXAGGERATED NEWS:


Sometimes newspapers may mislead people by publishing coloured or exaggerated news. Such news may bring about disturbance and chaos. Some party papers for the interest of their party may resort to such means through their paper.The government  should see to this and take necessary action to censure such news.


INTRODUCTION AND POPULARITY OF NEWSPAPERS IN INDIA:

In India,newspaper came late .The first newspaper in India  was the ' Bengal  Gazette'. It came to light in 1744 .In   November 1780, the India Gazette appeared; it supported the Company government .

Bengal Gazette

                   Thus  newspaper  are very helpful now-a-days in our life . The journalists should aim at giving good and healthy guidance to the people through the newspapers.

 

WHAT IS INTARNET ? DEFINATION & ALL OF THINGS ABOUT INTARNET IN DASCRIPTION .[BAST ESSAY]#1

WHAT IT IS :  The present age is the age of information technology and internet is a wonderful device of this branch of science.The network system of exchanging information among a number of computers is called internet or net.IT has how-a-days covered the whole world like the spiders' webs . This most powerful communication system is named as World Wide Web or w.w.w. in short .It is the networks of computer network .It was discovered by the American  engineer Tim Bernerslee .The whole world of internet is called the 'Cyberspace'.                                                          

                                                                                                

CATEGORIES :  This is system is usually  divided into two categories -LAN(Local Area Network)and WAN( Wide Area Network)by LAN system we can contact the local areas and by WAN we can contact the whole world,2.4 percent of the world population has now received the services of the internet . According  to  a latest report ,in the USA internet  is use by 46% of the population . In Europe and in  Asia  28.5% and 24.8% of  respectively . This device has spread  to the interior places also and regional languages are being also applied in it.

USEFULNESS:  The internet system is all excellent medium of collecting or  sending information from an and to  the different  places of the world in no time sitting in our drawing room by pushing a button in the key-board of the computer . Distance is thus reduced to nothing and the whole world is turned in to a Global Village . We can watch any programmes  of entertainment like Games, Movies ,songs E-Books etc . As we please ,  at-our own homes . With the help of the E-mail(ELECTRONIC MAIL) we can have the news of any country of the world the E-commerce helps us to do our necessary shopping without going to market . With the help of the E-book  we can have all information about the latest books and read them. By opening the website  internet  can in spreading of Education . Almost all  the big universities of the world . Now -a - days have there own website . In India same favourite  website have taken steps for the spread of Education . Among theme egurucool.com, classteacher.com, larneverythings.blogspot.com etc ..

DEMERITS:   The  internet  system is not  without its demerits . It is not safe from sun harmful things like  bluefilms  and other nudities . It may ruin the young boys and girls  if  misused . Because of the misuse of internet many of the net users have already suffered from  cybersex . Some miscreants may steal much secret  information with its help causing harm to any country or individual the net  can even helps the rubbers to rob bank money .This  negative  effects of internet  are named  as ' cyber terrorism'.

          Internet   will prove to be  a blessing  to mankind  if it is used  by the users by the users  by the  users  for their welfare. Its misuse  may prove dangerous to us  .

what is the fate of the gametes discharged in the synergid

During  double fertilisation in angiosperms , one male gamete fuses with the  egg to form the diploid zygote . The diploid zygote finally develops into embryo .The other male gamete fuses with the two polar nuclei  to form the triploid primary  endosperm nucleus , PEN ( triple fusion or vegetative fertilisation ).