Question

    Which of the following technological inventions came

    first?
    A Telegraph Correct Answer Incorrect Answer
    B Telescope Correct Answer Incorrect Answer
    C Telephone Correct Answer Incorrect Answer
    D Teletype Correct Answer Incorrect Answer

    Solution

    A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). The first known practical telescopes were invented in the Netherlands at the beginning of the 17th century, by using glass lenses. They found use in both terrestrial applications and astronomy.

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