---
title: Example of a possible structure on the topic "Electromagnetism"
published: true
routable: true
visible: false
lessons:
    - slug: structure-example-123-electromagnetism
      order: 3
    - slug: structure-example-234-electromagnetism
      order: 2
---
<!--caligraphie de l'intégrale double curviligne-->
$`\def\oint{\displaystyle\mathop{{\int}\mkern-16mu \scriptsize \bigcirc}}`$

#### Guidance to structure this level 3

This is the **equivalent of the first or two years at university**.
There is a big jump with the lower level. But we are not limited
to a number of hours or pages. We can make a quiet and controlled progression
even inside this level 3.

The high school is not homogeneous, there are sectors, specialties and options, and moreover
programs also vary by country and time. Certain mathematical tools
level N3 can be seen already in high school. Conversely, it is possible that certain themes
of our N2 level, are not seen in high school. **Think these levels 2 and 3 freely and**
**without leading references**.

Even within a level, you have to be very progressive, we have the space for that.
The gap should not be too large from one level to another, so as not to demotivate
students.


##### The blocks

In this level 3, **blocks** are important because they **allow to differentiate**
**students**. For example we can make an electrostatic block for
students who wish to stop at this level 3 in electromagnetism. This may be
a block with only direct calculations, and the notion of electric dipole. But
without Gauss's theorems and the divergence operator, which will be put in another
block for students who must prepare the mastery of the equations of
Maxwell's electromagnetism at level 4.

Later we can associate a metadata in the file, to select certain
blocks and offer specific educational circuits according to the student's wishes.

So use the blocks to **target the different pre-specialties** within
of this level 3.

Note: A block, which can contain several chapters and many figures, can be
quite heavy, but the estimate is that a block displayed in a presentation mode,
is displayed relatively quickly in 4G (even without wifi connection). A block will match
most likely to 1 web page of M3P2, otherwise 2 or 3.

--------------------------------------------------------------------------------

##### Color coded blocks in this design step:

!! BLOCK: all students entering this level 3

!!!! BLOCK students who will have to master Maxwell's electromagnetism at level 4

--------------------------------------------------------------------------------

#### An example of what to do in terms of structure: level 3

!! *BLOCK ELMAG3-1*
!!
!! *Possible title* : Conceptual diagram of electromagnetism
!!
!! *Short description* :   
!! An introduction to levels 3 and 4 of teaching electromagnetism
!! intended for physicists and others who will need to master Maxwell's equations.
!! And a learning guide on levels 3 and 4.
!!
!! *Program elements, or structuring in chapters* :
!! * give a general vision of electromagnetism, the cycle:    
!! moving charges    
!! $`=`$ (4 Maxwell equations) $`\Longrightarrow`$    
!! Lorentz forces on charges       
!! $`=`$ (Dynamic $`\overrightarrow{dp} = \overrightarrow{F} dt) \Longrightarrow`$   
!! modification of the movement of charges.   
!! * area of ​​validity
!! * brief history
!! * learning guide for level 3 and blocks for all at level 4 :
! why first electrostat, magnetosta,
!! why mathematical tool divergence, rotational, etc ..., <br>
!! difference between electromag in vacuum, and in matter (averages of the fields
!! in mesoscopic volumes), ...
!!
!! *For whom?* : All, at this level 3.

--------------------------------------------------------------------------------

!! *BLOCK ELMAG3-2*
!!
!! *Possible title* : Introduction to electromagnetic phenomena
!!
!! *Short description* : A general view of electromagnetic phenomena
!! of level N3, by privileging the phenomenological study with the mathematical tool
!! level N3 deprived of the divergence and rotational tools (we can cite them and give
!! intuitive meaning, but go no further) necessary to
!! Maxwell's electromagnetism.
!!
!! *Program elements, or structuring in chapters* :
!! The causes of the electric field (static: charges; and variable: B variable,
!! therefore in particular variable currents, moving currents and magnets).
!! The causes of the magnetic field (static: constant currents; and variable E variable,
!! therefore in particular variable currents, moving currents and magnets).
!!
!! *For whom?* : all (physics, biology, ecology, etc.) at level N3.

--------------------------------------------------------------------------------

!! *BLOCK ELMAG3-3*
!!
!! *Possible title* : Electrostatics in vacuum: direct calculations
!!
!! *Short description* : Electrostatic: E and V, with integral relation (circulation)
!! and local (gradient) between E and V. Direct calculations of E created by loads, and
!! of F induced by E on charges, introduction to the electric dipole
!! (force and moment which is exerted on it, and field E which it creates at great distance).
!!
!! *Program elements, or structuring in chapters* :
!!
!! *For whom?* : All (physics, biology, ecology, etc.) at level N3.

--------------------------------------------------------------------------------

!!!! *BLOCK ELMAG3-4*
!!!!
!!!! *Possible title* : Electrostatics in vacuum: first steps towards Maxwell's equations
!!!!
!!!! *Short description* : Gaussian theorem (integral and local) and all the tool
!!!! conceptual and associated mathematics: symmetries, vectors and pseudo vectors, divergence,
!!!! rotational, Laplacian, Poisson equation
!!!!
!!!! *Program elements, or structuring in chapter* :
!!!! finalize $`div \overrightarrow{E} = \ ho / \epsilon_0`$, but also
!!!! $`\overrightarrow{rot} \overrightarrow{E} = \ overrightarrow{0}`$
!!!! and $`\Delta V = \rho / \epsilon_0`$
!!!!
!!!!
!!!! *For whom?* : Physicists and others who will have to master Maxwell's equations.

--------------------------------------------------------------------------------

!! *BLOCK ELMAG3-5*
!!
!! *Possible title* : Conductive media (subject to stationary E)
!!
!! *Short description* : conductive & semiconductor media, bound charges
!! AND presence of free charges, thermal speed.
!! Materials (solid) cond. and semi-cond subjected to stationary E: drift speed, notion of hole
!! Cond. participating in a closed conductive circuit: current volume density vector,
!! then surface, intensity, resistivity-conductivity (local prop) and resistance,
!! Ohm's law (local and integral), charge conservation equation (all see
!! or review the discrepancy here)
!! Cond. isolated: external / internal / total electric field, transient: external E field => free charges
!! on the surface, equilibrium => Etotal = 0 => equipotential & volume density of zero charge
!! (phenomenological justification, and by Th Gauss cited for all)
!! towards Faraday cage and EM waves (even if it is variable E)
!!
!! *Idea* : it is for everyone at level 3. If it is too detailed for some, it is
!! remains a description of this theme at level 2
!!
!! *Program elements, or structuring in chapters* :
!!
!! *For whom?* All at level 3.

--------------------------------------------------------------------------------

!! *BLOCK ELMAG3-6*
!!
!! *Possible title* : Dielectric media 1 (subjected to stationary Eext)
!!
!! *Short description* : Short description: dielectric medium, dipole moment
!! electric, phenomena at the origin of dipole moments, polarization vector,
!! electronic, atomic and orientation polarization, E and P relationship, LHI media:
!! susceptibility, uniform, non-uniform polarization, volume density of charges
!! polarization, surface density of polarization charges, dielectric / conductor interface
!! with isotropic / anisotropic dielectric, electric induction vector, links between D, E, P, ε, ε_0, ε_r, χe
!! (all this for E stationary, but in "beyond, we indicate that it will depend on the frequency
!! of field E => N4)
!!
!! *Idea* : it is for everyone at level 3. If it is too detailed for some, it is
!! remains a description of this theme at level 2
!!
!! *Program elements, or structuring in chapters* :
!!
!! *For whom?* All at level 3.

--------------------------------------------------------------------------------

!!!! *BLOCK ELMAG3-7*
!!!!
!!!! *Possible title* : Dielectric media 2 (subjected to stationary Eext)
!!!!
!!!! *Short description* : Gaussian theorem (integral and local) expressed
!!!! with E, then with D
!!!!
!!!! *Program elements, or structuring in chapters* :
!!!!
!!!!
!!!! *For whom?* : Physicists and others who will have to master Maxwell's equations
!!!! in matter and at interfaces

--------------------------------------------------------------------------------

!! *BLOCK ELMAG3-8*
!!
!! *Possible title* : Capacitors (subject to stationary E)
!!
!! *Short description* : Conductors in total influence - capacitors
!! - capacity - with and without dielectric - series and in parallel - energy - and?
!!
!! *Program elements, or structuring in chapter* :
!!
!! *For whom?* : All at level 3.

--------------------------------------------------------------------------------

!! *BLOCK ELMAG3-9*
!!
!! *Possible title* : Magnetostatics in vacuum: direct calculations
!!
!! *Short description* : B (induction) and, H! (Excitation) and direct calculations
!! various,   
!! The causes of the magnetic field, direct calculations of B / H (infinite wire and
!! what can we say about B / H created by a current straightline, by a circular current loop
!! at a point on its axis, and far from the loop (analogy with E, because not B = rotA), and
!! invariance with respect to the exact shape of the loop in its plane. Notion of
!! magnetic dipole.    
!! The effects of B: calculations of forces induced by B, between 2 rectilinear conductors
!! infinity traversed by I cst, force and moment exerted by B on a circular loop
!! rigid current, towards the action of a B on a magnetic dipole.
!!
!! *Idea* : it is for everyone at level 3. If it is too detailed for some, it is
!! remains a description of this theme at level 2
!!
!! *Program elements, or structuring in chaptes* :
!!
!! *For whom?* : All at level 3.

--------------------------------------------------------------------------------

!!!! *BLOCK ELMAG3-10*
!!!!
!!!! *Possible title* : Magnetostatics in vacuum: first steps towards equations
!!!! by Maxwell
!!!!
!!!! *Short description* : Ampere theorem (integral and local) and all the tool
!!!! conceptual and mathematical divergence, rotational, necessary for the equations of
!!!! Maxwell, B = rot (A), relation between A and j, feedback on field B / H created by loop
!!!! current circular away from the loop.
!!!!
!!!! *Program elements, or structuring in chapters* :
!!!! finalize $`rot \overrightarrow{H} = \overrightarrow{j}`$ /
!!!! $`rot \overrightarrow{B} = \mu_0 \overrightarrow{j}`$ ET $`\oint \overrightarrow{B} \cdot \overrightarrow{dS} = 0`$,
!!!! Point out the difference between $`\displaystyle \int`$ and $`\oint`$ : case of the magnetic field.
!!!!
!!!! *For whom?* Physicists and others who will have to master Maxwell's equations.

--------------------------------------------------------------------------------

!! *BLOCK ELMAG3-11*
!!
!! *Possible title* : Magnetic media 1 (submitted to stationary Bext)
!!
!! *Short description* : magnetic media, magnetic moment: orbital and spin,
!! magnetization M, magnetization: amperic approach at this level N3,
!! non-uniform magnetization => volume vector density of magnetization currents,
!! uniform / non-uniform => surface density vector of magnetization current,
!! paramagnetism / diamagnetism / ferromagnetism.
!! relations between H, B, M, μ, μ_0, μ_r, χ_m, in LHI media or not
!!
!! *Idea* : it is for everyone at level 3. If it is too detailed for some, it is
!! remains a description of this theme at level 2
!!
!! *Program elements, or structuring in chapters* :
!!
!! *For whom?* : All at level 3

--------------------------------------------------------------------------------

!!!! *BLOCK ELMAG3-12*
!!!!
!!!! *Possible title* : Magnetic media 2 (submitted to stationary Bext)
!!!!
!!!! *Short description* : Ampère's theorem as a function of B, then of H
!!!!
!!!! *For whom?* Physicists and others who will have to master Maxwell's equations
!!!! in matter and at interfaces

--------------------------------------------------------------------------------

!! *BLOCK ELMAG3-13*
!!
!! *Possible title* : Electromagnetic induction phenomena: first steps
!!
!! *Short description* : For those who will stay at this level 3, without reaching
!! Maxwell's equations.
!!
!! *Program elements, or structuring in chapters* :
!! electromagnetic coupling,
!! electromotive force $`e = -d \Phi / dt`$ and consequences.
!!
!! *For whom?* : All at level 3

--------------------------------------------------------------------------------

!! *BLOCK ELMAG3-14*
!!
!! *Possible title* : Electromagnetic waves: first steps
!!
!! *Short description* : For those who will stay at this level 3, without reaching
!! Maxwell's equations.
!!
!! *Program elements, or structuring in chapter* :
!! Description of electromagnetic waves.
!! Very closely linked to another theme to be opened
!! on the "waves" to be constructed (waves in general, which will diversify as and when
!! we go up the levels)
!!
!! *For whom?* : All at level 3 

---------------------------------------------------------------------------------

!! *BLOCK ELMAG3-15*
!!
!! *Possible title* : Coils and transformers
!!
!! *Short description* : coil = solenoid = choke - inductance -
!! with and without ferromagnetic core - series and parallel - energy - and?
!!
!! *Idea* : it is for everyone at level 3. If it is too detailed for some, it is
!! remains a description of this theme at level 2
!!
!! *Program elements, or structuring in chapters* :
!!
!! *For whom?* : All at level 3

--------------------------------------------------------------------------------

!!!! *BLOCK ELMAG3-16*
!!!!
!!!! *Possible title* : Interfaces, diodes and transistors?
!!!!
!!!! *Short description* :
!!!!
!!!! *For whom?* : Physicists, electronics, Telecoms

--------------------------------------------------------------------------------

!! *BLOCK ELMAG3-17*
!!
!! *Possible title* : Electrical circuits
!!
!! *Short description* : Voltage generators, current generators,
!! receivers. Kirchhoff's laws, superposition theorem, Thévenin's theorem,
!! Norton's theorem. Millman's relationship.
!! Variable currents and alternating currents in
!! the approximation of quasi – stationary regimes.
!! Own regimes, transient regimes, time constant, forced regime.
!! Fresnel representation, use of complexes, AC power, resonance.
!! Use of complexes, charging and discharging of a capacitor, alternating bridges,
!! LC, RLC circuits
!!
!! *Idea* : it is for everyone at level 3. If it is too detailed for some, it is
!! remains a description of this theme at level 2
!!
!! *Program elements, or structuring in chapters* :
!!
!! *For whom?* : All at level 3.

--------------------------------------------------------------------------------

others
