When writing abbreviations in text, periods/dots "." are often used. After these LaTeX inserts a larger space. Usually I use
~ after my periods, but I'm not sure if these insert a breaking or non-breaking space.
My desire is to get a space that is similar to other spaces, i.e. the same width and one that adapts its width to fill the line.
What is the correct way to insert a space that allows breaking, but has the same width as the rest of the spaces on the line?