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Optics_book

Increase your vocabulary

Exercise 1. Match the synonyms.

1

2

  1. backbone

  1. old

  1. able

  1. remarkable

  1. beneficial

  1. useful

  1. similar

  1. personal

  1. wonderful

  1. analog

  1. ancient

  1. safe

  1. private

  1. capable

  1. late

  1. main

Exercise 2. Read and translate explanations of the terms given below.

    1. Telecommunications – communications by cable, telegraph, telephone, radio or TV.

    2. Telescope – instrument with lenses for making distant objects appear nearer and larger.

    3. Convert – change from one form into another.

    4. Fiber optics – the use of very thin bundles of glass or plastic fibers that transmit light throughout their length by internal reflection and are used e.g. for transmitting optical signals.

    5. Strand – any of the threads or wires twisted or laid parallel to make a cord or cable.