Are the lasers visible, if so do they look cool?

Question: Are the lasers visible, if so do they look cool?
- Keywords:
  laser,
  light
Asked by Dobby to Sarah on 16 Jun 2015.
- Sarah Beasley answered on 16 Jun 2015:
  
  Some lasers are visible, some aren’t! The ones which are, for example, red or green, you can only really see a dot on the wall unless there’s something in the air like smoke for the light to reflect back to your eyes from.

Question: Are the lasers visible, if so do they look cool?