Terms
Medium: The material (solid, liquid or gas) which waves travel.
Wave of energy: The way energy moves from one place to another.
Transverse wave: A transverse wave is where the particle moves/vibrates in the opposite direction from the wave of energy that is being created.
Compression wave: A compression wave is where the particle is moving/vibrating in the same direction as the wave of energy that is being created.
Frequency: The frequency of a wave is the number of complete vibrations or waves made in one second (how frequent the waves are).
Wavelength: A wavelength is the distance between the tops/crests of the two waves.
Amplitude:Amplitude means the height of the wave .
Electromagnetic Spectrum: A range of wavelengths and frequencies that determine what type of energy wave is being produced.
Visible Light:Able to transmit energy from one place to another.
Infrared Radiation:Infra-red radiation is invisible radiant energy. it is discharged by all objects and is sensed as heat,therefore as the heat increases so does the amount of infra-red radiation.
Ultra-Violet Radiation:UV radiation is defined as the portion of the electromagnetic spectrum. UV is needed by us humans to produce vitamin d
Electromagnetic waves: Electromagnetic waves are waves which can travel through the vacuum of outer space
Sound waves: Sound waves are waves created by sound such as if a phone rings the particle vibrates which then causes a sound wave.
Refraction:Refraction can occur when there is a change in the speed of light as it passes from one substance to another and it usually results in a change in direction.
Reflection: The return of light, heat, sound, etc., after striking a surface, it then travel off into a different direction
Concave: Means curved inwards
Convex: Means curved outwards
Compressions: Air particles closer together than usual.
Rarefactions: Air particles further apart than usual.
Sound waves:Combination of compressions and rare-fractions which then creates sound.
Reverberation: A reechoed sound.
Radio waves: An electromagnetic wave which produces AM and FM
Transmitter: A set of equipment used to generate and transmit electromagnetic waves carrying messages or signals, especially those of radio or television.
AM : Amplitude modulation- The audio signal changes the amplitude of the carrier wave.
FM.: Frequency modulation-Frequency of the carrier wave
Wireless communication: Allows us to transmit television and radio signals, telephone calls, facsimiles and computer data across our massive continent.
Microwaves: Microwaves can carry many signals at the same time but need to travel through repeater stations
Coaxial cables:Allow sound, pictures and data to be transmitted as pulses of electricity
Optical fibres: Transmit more messages at one time. Electrical signals from a microphone, television camera, computer or facsimile machine are converted into pulses of light.
Satellite dishes: A bowl-shaped aerial with which signals are transmitted to or received from a communications satellite.
Wave of energy: The way energy moves from one place to another.
Transverse wave: A transverse wave is where the particle moves/vibrates in the opposite direction from the wave of energy that is being created.
Compression wave: A compression wave is where the particle is moving/vibrating in the same direction as the wave of energy that is being created.
Frequency: The frequency of a wave is the number of complete vibrations or waves made in one second (how frequent the waves are).
Wavelength: A wavelength is the distance between the tops/crests of the two waves.
Amplitude:Amplitude means the height of the wave .
Electromagnetic Spectrum: A range of wavelengths and frequencies that determine what type of energy wave is being produced.
Visible Light:Able to transmit energy from one place to another.
Infrared Radiation:Infra-red radiation is invisible radiant energy. it is discharged by all objects and is sensed as heat,therefore as the heat increases so does the amount of infra-red radiation.
Ultra-Violet Radiation:UV radiation is defined as the portion of the electromagnetic spectrum. UV is needed by us humans to produce vitamin d
Electromagnetic waves: Electromagnetic waves are waves which can travel through the vacuum of outer space
Sound waves: Sound waves are waves created by sound such as if a phone rings the particle vibrates which then causes a sound wave.
Refraction:Refraction can occur when there is a change in the speed of light as it passes from one substance to another and it usually results in a change in direction.
Reflection: The return of light, heat, sound, etc., after striking a surface, it then travel off into a different direction
Concave: Means curved inwards
Convex: Means curved outwards
Compressions: Air particles closer together than usual.
Rarefactions: Air particles further apart than usual.
Sound waves:Combination of compressions and rare-fractions which then creates sound.
Reverberation: A reechoed sound.
Radio waves: An electromagnetic wave which produces AM and FM
Transmitter: A set of equipment used to generate and transmit electromagnetic waves carrying messages or signals, especially those of radio or television.
AM : Amplitude modulation- The audio signal changes the amplitude of the carrier wave.
FM.: Frequency modulation-Frequency of the carrier wave
Wireless communication: Allows us to transmit television and radio signals, telephone calls, facsimiles and computer data across our massive continent.
Microwaves: Microwaves can carry many signals at the same time but need to travel through repeater stations
Coaxial cables:Allow sound, pictures and data to be transmitted as pulses of electricity
Optical fibres: Transmit more messages at one time. Electrical signals from a microphone, television camera, computer or facsimile machine are converted into pulses of light.
Satellite dishes: A bowl-shaped aerial with which signals are transmitted to or received from a communications satellite.