8A:
Define an “Electromagnetic wave.”
A type of transverse wave comprising of a changing electric field perpendicular to a changing magnetic field.
8A:
Define the “Electromagnetic,” spectrum.
The electromagnetic spectrum is the range of all possible electromagnetic waves that exist, with these different types of radiation being distinguished based on their frequencies and wavelengths.
8A:
How does accelerating charged particles result in electromagnetic radiation?
When a charged particle is accelerated, the electric field it has begins to change. This produces a changing magnetic field perpendicular to it, which then produces a changing electric field. The electric and magnetic fields then self-propagate, and an electromagnetic wave is formed as a result.
8A:
Describe where Radiowaves are used in everyday life
Due to their really long wavelengths, they are able to diffract around objects immensely, making them useful in the communication of information. They are used greatly in Radio and Tv signals.
8A:
Describe where Microwaves are used in everyday life
These waves also have a relatively high wavelength and low frequency. They are used in Wifi and Radar systems as well as in phine signals.
8A:
Describe where infrared waves are used in everyday life.
These waves are used in signal transmission. For instance, remote controls use this form of radiation.
8A:
Describe visible light in the context of real life.
This is the only form of electromagnetic radiation that can be seen with the human eye. It consists of the colors of the Rainbow.
8A:
Describe where ultraviolet rays are used in everyday life.
They are used to sterilize water and medical equipment. Additionally, they appear in forensic analysis when visible light must be emitted from an object.
8B:
Explain how Young’s double slit experiment works
A light beam is shone into two slits, with this light diffracting and forming an interference pattern that is picked up on by the screen. Light bands represent points of constructive interference (anti-nodes) and dark bands represent points of destructive interference (nodal points).
