Examples and some technological applications of electromagnetic waves

The electromagnetic waves

The electromagnetic waves .

The electromagnetic waves

The electromagnetic waves are formed when an electric field couples with a magnetic field . The magnetic and electric fields of an electromagnetic waves are perpendicular to each other and to the direction of the wave .

Mechanical waves and Electromagnetic waves cause the wave motion .

Electromagnetic waves are characterized by :

  • They are accompanied with the electromagnetic forces .
  • Their speed is extremely high ( speed of the light is about 300 millions m/s ) .
  • No medium is required for the electromagnetic waves to travel through , They can  travel through the free space .
Examples of electromagnetic waves :
  1.  Gamma rays
  2. The light waves
  3. Wireless waves . ( which are used in communications )
  4. X – rays .
  5. Ultraviolet and infrared rays ( accompanied by Sun  rays ) .
  6. Radio and television waves .
Technological applications of electromagnetic waves

Ultraviolet ( UV ) rays :  They have the property of killing the microbes , so , they are used to sterilize the sets of surgical operations rooms .

 X – rays :  They are very important In photographing the bones for detecting the bone fractures , X – rays are used in examining the mineral raws in industry and showing errors , pores and cracks in these minerals .

Gamma rays : They are used in medical purposes as the treatment and discovering of some swellings ( tumors ) .

Visible ( seen ) light : They are used In photographing cameras , They are very important in television cameras ,  They are used in light shows ( data show ) .

Infrared ( IR ) rays : They are used in night vision apparatus used by modern military forces ,They are very important in remote sensing instrument to photograph Earth’s surface using the satellites .

Also they are used in cooking food because these rays have heat effect property and they are used in making remote sets to control and start electric sets ( TV , DVD , air conditioner  …. ) .

Properties of Mechanical waves and Electromagnetic waves 

Properties of electromagnetic waves and Light reflection

Visible spectrum and Properties of light

X-rays properties , uses and method of obtaining X-rays by using Coolidge tube

You may also like...

Leave a Reply

Your email address will not be published. Required fields are marked *