Improv is when you do something that is not planned or written in the music. For instance a singer can provide improv by doing a run or adding in an extra note or something of that nature. improv is mostly a drama term that is used for an unscripted scene between two or more actors, typically they are given a topic and thrown into a scene with no prep time.
Oil paint because it has the consistency of pigments mixed with drying oil (commonly linseed oil). The oil paint drys more slowly which makes it more easy to blend each color together & provided a softer merging of one tone into the next, becoming a well used tool to artist.
The Kodak Brownie, (also just known as Brownie) was a long-series of simple and cheap cameras made by Eastman Kodak and was introduced in February of 1900.
Hope this helps!
