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.
1898: The First Christmas Movie. Long before Miracle on 34th Street and It's a Wonderful Life, there was Santa Claus. Not only was this the first Christmas movie--it was among the first movies on any topic ever made. George Albert Smith, a British pioneer of filmmaking, produced it in 1898. This short film was a technical marvel of its age: