physics

Radio waves are able to diffract readily around buildings, as anybody with a portable radio receiver can verify. However, light waves, which are also electromagnetic waves, undergo no discernible diffraction around buildings. Why not?

  1. 👍
  2. 👎
  3. 👁
  1. diffraction is noticable for long wave, not for short waves.

    1. 👍
    2. 👎
    👤
    bobpursley
  2. Here are few additional comments to Bob Pursley's correct answer

    Waves spread sideways a distance x beyond edges of objects by a characteristic distance
    y = sqrt(wavelength*X)
    This is called Fresnel diffraction

    There is another type of diffraction in the "far field" past objects of size D that block waves. It is called Fraunhofer diffraction and has a characteristic spread angle
    theta = wavelength/D

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    a radio station broadcasts at a frequency of 590,000 . What is the wavelength of the radio waves?

  2. Earth Studies

    Which type of electromagnetic radiation has more energy than visible light and can pass through the human body? A. X-rays B. radio waves C. ultraviolet light D. microwaves 2. Which information about objects in space can

  3. chemistry

    Radio waves travel at the speed of light which is 3.00 x 108 m/s. How many minutes does it take for a radio message to reach Earth from Saturn if Saturn is 7.9 x 108 km from Earth?

  4. physics

    e AM and FM radio waves are transverse waves consisting of electric and magnetic disturbances traveling at a speed of 3.00 x 10 8 m/s. A station broadcasts an AM radio wave whose frequency is 1230 x 10 3 Hz. (1230 kHz on the dial)

  1. Physical Science

    QUESTION---Which waves have wavelengths longer than those of visible light? MY ANSWER--Infrared light, microwaves and radio waves have wavelengths longer than visible light. Radio waves have the longest wavelength. Are there any

  2. chem

    An FM radio station broadcasts at 97.4 MHz. Calculate the wavelength of the corresponding radio waves.

  3. Introduction to Graphic Design A

    Hello! Thanks for checking my question out! ____ Mia’s clock radio communicates the time, plays the radio, and sounds the alarm at a set time, but Mia has trouble seeing the numbers on the clock at night because they are not

  4. Physics 11

    An FM radio station transmits radio signals that have a wavelength of 3.2m. Where would you have to adjust your tuner in order to pick up its music? Note: FM waves are measured in MHZ I have no idea where to go with this... Thank

  1. Physics

    A transistor radio operates by means of a 9.0 V battery that supplies it with a 40 mA current. (a) If the cost of the battery is $0.50 and it lasts for 300 h, what is the cost per kWh to operate the radio in this manner? (b) The

  2. Science

    Which statement correctly compares radio waves and microwaves? Radio waves have shorter wavelengths and higher frequencies than microwaves. Radio waves have longer wavelengths and higher frequencies than microwaves. Radio waves

  3. Physics

    Radio amateurs are permitted to communicate on the "10 meter band." What frequency of radio waves corresponds to a wavelengthy of 20m? (The speed of radio wave is 3.00 x 10(8)m/s). Can you help me with setting up the formula?

  4. Science

    I have several questions 4: The image above shows particles in a medium. Which of the following shows the best conditions for a sound wave to travel? a, b, c, d----My answer is C 12. Which letter shows the type of wave that can be

You can view more similar questions or ask a new question.