Light Basics PDF

 as the wavelength shortens, the frequency increases and the energy increases vice versa Radio Waves are used for broadcasting TV and radio signals because they can cover a greater distance Microwaves can be used in channels of telecommunication like mobile netwo...

 as the wavelength shortens, the frequency increases and the energy increases vice versa Radio Waves are used for broadcasting TV and radio signals because they can cover a greater distance Microwaves can be used in channels of telecommunication like mobile networks, Bluetooth, Wireless and LAN protocols. appliances like the microwave Infrared Waves This region of the spectrum is more known for the aspect of heat associated with it. as they have higher energy as compared to radio waves and microwaves.  The part of the EM spectrum from radio waves to visible light have comparatively lower energy so these radiation are referred to as low energy radiations which are safe even after prolonged use. UV radiations They are used as sterilizing agents by the medical industry and by water purifiers to get rid of harmful bacteria. X-Ray X-Ray are used to a great extent by It is also used by airport the medical industry to security to scan luggage examine the state of bones or for potentially dangerous foreign objects in the body. objects.  Gamma rays are a type of radiation with the lowest wavelength and the highest energy. They are the exact opposite of radio waves. They are emitted by radioactive material, given off during nuclear explosions. They are used for space observatories and astronomical observations.