UNIT 3

RADIO

NOTE

• radio/´reidiou/ • transfer/'trænsfə/ • reduce/ri'dju:s/ • formation/fɔ:'mei∫n/ • process/'prouses/

CONTENTS

• Information transfer • Reduced time clauses • Word formation • Radio • Describing a process

to make use of something

ray/rei/

• • electromagnetic /i'lektroumæg'netik/ • wave/weɪv/ • wavelength/ˈweɪvˌlɛŋkθ/ • • gamma/'gæmə/ • ultraviolet/¸ʌltrə´vaiəlit/ • visible/'vizəbl/ •

infrared/'infrə'red/

TASK 1

CONTENTS

• Information transfer • Reduced time clauses • Word formation • Radio • Describing a process

READING

• flowchart /flouwtʃa:t/ • practise /´præktis/ • complete /kəm'pli:t/

NOTE

• propagation/¸prɔpə´geiʃən/ • transmit/trænz'mit/ • surface/ˈsɜrfɪs/ • curvature/´kə:vətʃə/ • absorb/əb'sɔ:b/ • absorption/əb'sɔ:pʃn/ • sand/sænd/ • energy/'enədʤi/ • extent/iks'tent /

TASK 2

TASK 2