Science History: Electromagnetic Waves and Pioneers
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Questions and Answers

According to the text, who mathematically predicted the existence of Electromagnetic Waves?

  • Guglielmo Marconi
  • Heinrich Hertz
  • James Clerk Maxwell (correct)
  • Michael Faraday

    • What did Heinrich Hertz successfully detect and generate in a laboratory in 1887?

  • Electric fields
  • Electromagnetic waves (correct)
  • Radio waves
  • Magnetic fields

    • How does one way to create an EM wave, as described in the text?

  • By vibrating electric charges (correct)
  • By vibrating magnetic charges
  • By manipulating gravitational fields
  • By manipulating electric fields

    • Which field constantly creates the other through vibration of electric charges?

    <p>Both fields create each other simultaneously</p> Signup and view all the answers

    What is the speed of light, as mentioned in the text?

    <p>$299,792,458 m/s$</p> Signup and view all the answers

    What is Planck's constant as mentioned in the text?

    <p>$6.63 × 10^{-34} J⋅s$</p> Signup and view all the answers

    Which type of electromagnetic wave has the greatest energy, highest frequency, and shortest wavelength?

    <p>Gamma Rays</p> Signup and view all the answers

    What was the range of frequencies for microwaves as mentioned in the text?

    <p>300 MHz to 3 GHz</p> Signup and view all the answers

    What is the size range of the longest known EM waves?

    <p>A few centimeters to the size of buildings</p> Signup and view all the answers

    Which EM wave has longer wavelengths than visible light and shorter than microwaves?

    <p>Infrared</p> Signup and view all the answers

    What is the range of wavelengths for X-rays as mentioned in the text?

    <p>100 nm to 0.1 nm</p> Signup and view all the answers

    What is the frequency range for Infrared waves as mentioned in the text?

    <p>4 x 10^14 Hz to 7.5 x 10^14 Hz</p> Signup and view all the answers

    Which electromagnetic wave consists of colors (ROYGBIV)?

    <p>Visible Light</p> Signup and view all the answers

    What are the frequencies corresponding to the longest known EM waves?

    <p>&lt;= 300 GHz (1 GHz = 10^9Hz)</p> Signup and view all the answers

    Which EM wave may vary on its frequencies and wavelengths?

    <p>Microwaves</p> Signup and view all the answers

    Which EM wave was first generated and detected by Heinrich Hertz in 1888?

    <p>Microwaves</p> Signup and view all the answers

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