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Electric current in metals
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Kinematics
Dynamics
Statics
Energy conservation laws in mechanics
Fluid and gas pressure
Molecular kinetics
Heat (thermal) phenomenons
Vapor, fluid (liquids), solid state
Thermodynamics
Electrostatics
Continuous (direct) current
Magnetic field
Electromagnetic induction
Electric current in metals
Mechanical oscillations
Mechanical waves
Electromagnetic oscillations
Alternating current
Electromagnetic waves
Photometry
Geometrical (ray) optics
Wave optics
Quantum optics
Relativity theory
Atom and nucleus of atom
Kinematics
Dynamics
Statics
Energy conservation laws in mechanics
Fluid and gas pressure
Molecular kinetics
Heat (thermal) phenomenons
Vapor, fluid (liquids), solid state
Thermodynamics
Electrostatics
Continuous (direct) current
Magnetic field
Electromagnetic induction
Electric current in metals
Mechanical oscillations
Mechanical waves
Electromagnetic oscillations
Alternating current
Electromagnetic waves
Photometry
Geometrical (ray) optics
Wave optics
Quantum optics
Relativity theory
Atom and nucleus of atom
Physics formulas
Electromagnetic waves
Electromagnetic waves
Electromagnetic wave velocity
$$v = \frac{c}{\sqrt {\varepsilon\cdot \mu}}$$
v - speed (velocity)
c - speed of light
ε - dielectric constant (permittivity)
μ - relative magnetic permeability
Find
v
v
c
ε
μ
It is known that:
v
c
ε
μ
=
x
Calculate '
v
'
Speed of light in vacuum
$$c = \sqrt {\varepsilon0\cdot \mu0}$$
c - speed of light
ε0 - permittivity constant
μ0 - magnetic constant
Find
c
c
ε0
μ0
It is known that:
c
ε0
μ0
=
x
Calculate '
c
'
Length of electromagnetic wave
$$\lambda = c\cdot T$$
λ - wave length
c - speed of light
T - period
Find
λ
λ
c
T
It is known that:
λ
c
T
=
x
Calculate '
λ
'
Length of electromagnetic wave
$$\lambda = \frac{c}{\nu}$$
λ - wave length
c - speed of light
ν - frequency
Find
λ
λ
c
ν
It is known that:
λ
c
ν
=
x
Calculate '
λ
'
Bulk (spatial, volume) density of electromagnetic wave
$$\omega = \frac{E\cdot B}{v\cdot \varepsilon0\cdot \mu0}$$
ω - bulk (spatial, volume) density
E - electric field
B - magnetic induction
v - speed (velocity)
ε0 - permittivity constant
μ0 - magnetic constant
Find
ω
ω
E
B
v
ε0
μ0
It is known that:
ω
E
B
v
ε0
μ0
=
x
Calculate '
ω
'
Length of electromagnetic wave
$$\lambda = \frac{v}{\nu}$$
λ - wave length
v - speed (velocity)
ν - frequency
Find
λ
λ
v
ν
It is known that:
λ
v
ν
=
x
Calculate '
λ
'
Radiolocation: distance
$$s = \frac{c\cdot t}{2}$$
s - distance
c - speed of light
t - time
Find
s
s
c
t
It is known that:
s
c
t
=
x
Calculate '
s
'
1
a
A
δ
Δ
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2
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8
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