WAVES Flashcards
wave
a periodic disturbance travelling though space. characterized by a vibrating medium
progressive wave
a wave that carries energy from one place to another
displacement
the distance of a point on the wave from its undisturbed position or equilibrium position
amplitude
the maximum displacement of a wave
wavelength
the distance between two adjacent points on a wave oscillating in step with each other
period
the time taken for one complete oscillation of a point in a wave
frequency
the number of oscillation per unit time of a point in a wave
longitudinal waves
a wave in which the particles of the medium oscillate along the direction in which the wave travels
transverse wave
a wave in which the particles of the medium oscillate at right angles to the direction in which the wave travels
compression
the point in a sound wave at which the air pressure is at maximum
rarefaction
a region in a sound wave where the air pressure is less than its mean value
phase difference
the fraction of a cycle between two oscillating particles, expressed in either degrees or radians
intensity
intensity is the rate of energy transmitted per unit area at right angles to the wave velocity
doppler effect formula
https://www.savemyexams.co.uk/as/physics/cie/19/revision-notes/8-waves/8-4-doppler-effect/8-4-1-doppler-effect/
electromagnetic spectrum
the family of waves that travel trhough a vacuum at a speed of 3.00 × 10^8 ms^-1
magnetic field
a force field in which a magnet. a wire carrying a current. or a moving charge experiences a force
electromagnetic wave
a transverse wave travelling trough space as vibrations of electric and magnetic fields
radio waves
> 10^6 to 10^-1
microwaves
10^-1 to 10^-3
infrared
10^-3 to 7 x 10^-7
visible
7 x 10^-7 to 4 x 10^-7 (red to violet)
ultraviolet
4 x 10^-7 to 10^-8
X- rays
10^-8 to 10^-13
y - rays
10^-10 to 10^-16
electric field
a force field in which a n electric charged particle experiences a force
plane polarised
describes a transverse wave with oscillation in just one plane. Only transverse waves can be polarised
mulus law
https://www.savemyexams.co.uk/as/physics/cie/22/revision-notes/7-waves/7-2-transverse-waves-em-spectrum–polarisation/7-2-2-polarisation/
