Update cheatsheet.en.md

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

@@ -80,33 +80,34 @@ of the pond.
    * A field is **uniform** if *its value is the same at every point* in space at a given
    instant or over a specified time period.   
    <br>
-   _*Example:* Even without ripples, the depth of a pond varies from one point to another._
-   _The water height field beneath the surface is **not uniform**._
-   _*However,* in an Olympic swimming pool where the water depth is the same everywhere,_
-   _the water height field **is uniform** at the surface._
+   _For example, even without ripples, the depth of a pond varies from one point to another._
+   _The water height field beneath the surface is not uniform._   
+   _However, in an Olympic swimming pool where the water depth is the same everywhere,_
+   _the water height field is uniform at the surface._
 
-   * A field is **stationary** if *its values*—which may vary in space—*do not change over time*.
-   _*Example:* In a calm, windless pond where the water surface is "at rest," perfectly still,_
-   _the water height field is **stationary**._
+   * A field is **stationary** if *its values*—which may vary in space—*do not change over time*.   
+   <br>
+   _In a calm, windless pond where the water surface is "at rest," perfectly still,_
+   _the water height field is stationary._
 
 
    * A field is **homogeneous** if *its propagation properties* (the shape of the perturbation 
    for a given impact and its propagation speed in a given direction) *are identical at every point* 
    in space, even if the field’s values vary spatially.   
    <br>
-   _*Example:* The speed of ripples depends on depth—shallow water slows propagation due to friction_
-   _with the bottom, while deep water allows faster wave movement._
-   _*Thus,* since a pond’s depth varies, its water height field is **not strictly homogeneous**._
-   _*However,* in an Olympic pool with constant depth, the field **is homogeneous**._
+   _The speed of ripples depends on depth—shallow water slows propagation due to friction_
+   _with the bottom, while deep water allows faster wave movement._   
+   _Thus, since a pond’s depth varies, its water height field is not strictly homogeneous._
+   _However, in an Olympic pool with constant depth, the field is homogeneous._
 
    * A field is **isotropic** if, regardless of the impact point, *the propagation of the perturbation*
    (its speed, shape, and attenuation) *does not depend on direction*, even if the 
    induced perturbation varies from one point to another for the same impact.   
    <br>
-   _*Example:* If raindrops in a pond always create perfectly circular ripples that propagate_
+   _If raindrops in a pond always create perfectly circular ripples that propagate_
    _outward, it means each ripple spreads at the same speed in all directions._
-   _*Furthermore,* if the height of a ripple remains constant at equal distances from_
-   _the impact point, then the water height field is **isotropic**._
+   _Furthermore, if the height of a ripple remains constant at equal distances from_
+   _the impact point, then the water height field is isotropic._
 
    * A field is **linear** if, for a point-like and instantaneous impact,
    *the amplitude of the perturbation is proportional to the energy of the impact*,