A complete summary of edexcel a level physics ‘waves and the particle nature of light’ notes, handwritten by an A* physics student (2024), with definitions and diagrams. These notes are a combination of my teachers, physics and maths tutors and further reading to form a complete set of thoroug...
#hamit distance
am=4
wavelength ,
↑
=4
time period ,
T
times
fX
Wavelength ,
#
m
= L
f =
time period ,
s
wave speed mst , frequency ,
Hz
frequency ,
Hz
phase
-
describes a part of the oscillation at a point
200
a
superposition the resultant displacement at point equals the
-
wave a sum of
the displacements of all waves incident at that point
if the path difference between two waves is ni the waves interfere
BIG in
constructively : the amplitude is ,
the waves are phase
if the path difference between two waves is (n + 2) X the waves
interfere destructively : the
amplitude is small ,
the waves are in antiphase
constructive interference destructive interference
W
-11 H
-
standing waves
-
two waves of the same
type travel in opposite directions
and superpose forming a series of
des
and antinode a
-
zero displacement
↓
↑sa A
k*
maximum displacement
IX
, fixed it has
fundamental frequency when
string is at both ends
-
a
- its lowest
frequency ,
but biggest amplitude
Wave front-made up of all the points of the wave that are in phase
diffraction -
when a wavefront passes through an aperture and
changes shape
#D will spread our more
- it
is smaller or
time
wave has
path difference
- n = 2
diffraction grating & n = 1
atto
* & -n = 0
Sz
laser beam -n = 1
-n =
2
sinOn = sit
Light
itself
from
causing
a
single
a
slit
central
will
bright
interfere
Gringe
with
separation surrounded
by alternate
bright and dark
fringes
construction point
Huygen's treated
-
on a
wavefront be as
every can a
point source of a
secondary wavelet
& v
·
incident wave
-
Y
Laws of reflection i)
oi =
r
F r(
&
reflected wave
·
incident , normal , reflected are all on the same
plane
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