Update cheatsheet.en.md

10.temporary-m3p2/16.waves/20.n2/05.waves-introduction/10.waves-in-physics/cheatsheet.en.md

@@ -208,7 +208,7 @@ Our senses cannot perceive these waves at all.
 !
 ! Predicted by general relativity but observed only since 2015, the
 ! **gravitational waves** are at the **basis of a new astrophysics**,
-! *gravitational wave astrophysics*.
+! *gravitational wave astrophysics*.<br>
 ! <br>
 ! It observes **violent and massive phenomena** in the universe:
 ! rapid rotations before their *merger of black holes and neutron stars*.
@@ -228,7 +228,7 @@ governed by *Schrödinger's equation*, or by more advanced equations in *quantum
 
 * **$`\boldsymbol{\psi}`$** does not describe a classical wave, but rather a **probability amplitude**
 of finding a particle in a given state (position, momentum, spin, etc.).
-The *probability itself* is proportional to *$`|\boldsymbol{\psi}|^2`*.
+The *probability itself* is proportional to *$`|\boldsymbol{\psi}|^2`$*.   
 In this sense, the quantum function **$`\boldsymbol{\psi}`$ describes wave-particle duality**.
 
 * It is *not material*, and one of its particularities is
@@ -246,14 +246,12 @@ _Representation of electron presence probability (blue) in s orbitals (center) a
 _of a hydrogen-like atom, with the atomic nucleus at the center and highly magnified (red)._
 
 
-<br>
-
 *B - Wave Function and Entangled Particles*
 
-* **Quantum entanglement** corresponds to an *even more abstract level of reality*.
+* **Quantum entanglement** corresponds to an *even more abstract level of reality*.   
   <br>
   The **quantum link between two entangled particles** (which have interacted together in the past) is
-  an absolutely extraordinary connection that *exists outside of space and time*.
+  an absolutely extraordinary connection that *exists outside of space and time*.   
   <br>
   This link:
    * is *undetectable* by any known technology
@@ -261,11 +259,11 @@ _of a hydrogen-like atom, with the atomic nucleus at the center and highly magni
    * is *not stopped by obstacles* of any kind
    * has an *instantaneous behavior*, therefore *non-local*.
 
-* **Fundamentally non-local**, this link is at the *basis of quantum teleportation*.
+* **Fundamentally non-local**, this link is at the *basis of quantum teleportation*.   
   <br>
   When the **state of a particle is teleported from place A to place B**,
   the *information propagates instantaneously* from A to B, and does not pass through the physical
-  space between A and B (which is why it is said that this link exists outside of space and time).
+  space between A and B (which is why it is said that this link exists outside of space and time).   
   <br>
   The **conceptual understanding of this phenomenon** is *one of the great open questions*
   in the interpretation of quantum physics; it is the subject of major debates among physicists.
@@ -281,7 +279,7 @@ _of a hydrogen-like atom, with the atomic nucleus at the center and highly magni
   It is its conceptual interpretation that is a matter of controversy.
 
 * The **instantaneous action of quantum entanglement** is *random*
-  and *does not allow communication*.
+  and *does not allow communication*.   
   <br>
   However, **quantum teleportation allows communication** because it
   involves two steps:
@@ -290,12 +288,6 @@ _of a hydrogen-like atom, with the atomic nucleus at the center and highly magni
 
   Therefore, **complete teleportation** is *limited by the speed of light*.
 
-! *Note* :
-!
-! In quantum mechanics and quantum field theory, the *wave function $`\Psi`$*
-! is actually *linked to the probability of a particle's presence* in a given quantum state superposition. The probability itself is proportional to $` \Psi|^2`$.
-! In this sense, it *describes the wave-particle duality*.
-
 !! *Going Further* :
 !!
 !! The framework of quantum field theory, which combines and extends special relativity