2. Complete the following sentences with the words from the box.

broadcast, microphone, curve, machine, sound signals, receiver, radio transmission, static, noise

a. A transmitter is a__________________.

b. Radio waves carry_________________.

c. A________changes sound waves into electronic sygnals.

d. A________changes signals into sound again.

e. A frequency means the number of times that radio waves_______per second.

f. Radio stations________their programs.

g. FM means_________

h. In FM radio,_________and_______are reduced.

3. Read the text again to decide if the statements are true or false. Correct the false ones with the facts from the text.

1. Radio waves carry sounds.

2. "Frequency" refers to the number of times a radio wave travels.

3. Different radio stations use different frequencies.

4. Some radio waves are shorter then others.

5. It was Guglielmo Marconi who first discovered radio waves.

6. "Wavelength" refers to the length of a radio wave.

7. Unlike telephone messages, radio waves can travel only short distances.

8. If you have a good receiver, you don't need a transmitter to hear a radio program.

IV. What do you think.

1. What is the difference between radio broadcasts and telephone messages?

2. In order for radio programs to be broadcast, what equipment are needed?

3. How are several hundred radio stations able to broadcast at the same time?

4. Who first discovered electromagnetic waves?

5. What is FM broadcasting?

6. What country was Marconi from? And what was he famous for?

V. Discuss the following with your groupmates.

1. Guglielmo Marcony is a very important person in the history of radio broadcasting. Describe his work in your own words.

2. Do you have a habit of listening to the radio? Speak about your favorite.

3. Name any other scientists who worked in the field of radio broadcasting?

Television is Developed

I. First Thoughts:

1.What does the word “television” mean ?

2.What language does this word originate from ?

3.What country succeeded in applying the first television camera?

II. Study the following words. Make sure you know them:

transmit, image, broadcasting, convert, receiver, tube, resolusion, regular.

III. Read the text and do the tasks following it.

John Logie Baird (1888-1946) applied for a patent for a mechanical television in 1923. He ran successful experiments in transmitting images in 1926, and in 1930 he worked with the British Broadcasting Corporation (BBC) to begin mechanical television broadcasting. He also tried, rather unsuccessfully, to mass-market his television transmitter.

In 1923 Vladimir Zworykin (1889-1982) also applied for a patent. He was for a television camera that converted optical images into electrical pulses. On November 18, 1929, at a convention of radio engineers, Zworykin demonstrated a television receiver containing his “kinescope”, a cathoderay tube. That same year Zworykin joined the Radio Corporation of America (RCA) in Camden, New Jersey. As the director of their Electronic Research Laboratory, he was able to concentrate on making critical improvements to his system. Zworykin’s “storage principle” is the basis of modern TV.

Meanwhile, in Japan, Kenjiro Takayanagi was developing electronic television, too. He was ahead of Zworykin, but better publicity gave Zworykin the nickname “father of television.” Takayanagi transmitted an image electronically in 1926, with a 40-line resolution and film running at 14 frames per second.

In 1932 the BBC ventured the first regularly broadcast programs using Baird’s mechanical equipment, though it had been broadcasting special events and other sporadic transmissions since 1927. The first special-purpose television station was built in Germany in 1935 in preparation for the Berlin Olympic Games the following year. That Olympic year, NBC experimented with electronic broadcast from the top of the Empire State Building. The first live journalistic event covered by television was the 1937 coronation of Britain’s King George VI. That year, the BBC began the first regular, high-quality broadcasting service using an electronic system.

IV. Comprehension check

1. Match the words and their meaning by placing the proper letters on each blank.

_1. apply for a) to cause to grow to unfold

_2. run experiments b) happening, usually smth important; fact

_3. broadcast c) change from one form to another

_4. improve d) send out in all directions

_5. develop e) make or become better

_6. frame f) organize, manage, cause to be in operation

2. Write S, A, or N to tell whether these words are synonyms or antonyms or neither. The first is done for you.

N - transmit -contain -purpose -direction

- begin -finish -demonstrate -show

-apply -use -build -destroy

-convert -transform -give -take

-receive -send -ahead -behind

-join -put together -special -sporadic

-develop -improve -top -bottom

3. Read the text again to decide if the statements are true or false. Correct the false ones with the facts from the text.

1. John Logie Baird applied for a patent for a mechanical television in 1923.

2. BBC began mechanical television broadcasting in 1933.

3. Vladimir Zworykin invented a television camera that converted optical images into electrical pulses.

4. Zworykin became the director of the Electronic Research Laboratory of the Radio Corporation of America.

5. The basis of modern TV is Zworykin's "storage principle".

6. K. Takayanagi was developing electronic television too.

7. He transmitted an image electronically in 1929 with a film running 24 frames per second.

8. The first regular, high-quality broadcasting service using an electronic service took place in 1934.