Does a half step have 1 note in between or 0 notes in between

Half steps

But it is clear at the keyboard that in each case there is no note in between them. So a scale that goes up or down by half steps, a chromatic scale, plays all the notes on both the white and black keys of a piano. It also plays all the notes easily available on most Western instruments.

Explanation:

this is a experment where you actully have to do the work like go take some photos in something your interstid in