1 Myelin is an insulating material that, when itâs worn away or damaged, decreases nerve function. Damage to myelin is called demyelination.  There are different types of demyelination. These include inflammatory demyelination and viral demyelination.
1888 â Roundhay Garden Scene. The worldâs earliest surviving motion-picture film, showing actual consectuve action is called Roundhay Garden Scene. Itâs a short film directed by French inventor Louis Le Prince. While itâs just 2.11 seconds long, it is technically a movie.
Many consider Walt Disney's 1937 Snow White and the Seven Dwarfs the first animated feature film, though at least seven films were released earlier. However, Disney's film was the first one completely made using hand-drawn animation. The previous seven films, of which only four survive, were made using cutout, silhouette or stop motion, except for oneâalso made by Disney seven months prior to Snow White's releaseâAcademy Award Review of Walt Disney Cartoons.