air bubbles look like dark spots
solid objects like in biopsy are sliced thinly by the use of microtome, dyed and placed on glass slides. Then you can view individual cell.
Does what look like what under a micrscope. Everything under a microscope is upside down and backwards. So it would look like a backwards if.
a cilinder that has a pump and and long hose
It depends on what the case is.If it is gasoline and oil it would probaly have a gray to blackish color.But if it was paint it could have a more exoitic color.Or if it was from a factory it is...
Un-recanable its sorta a Flash that you follow... If you ever see it walk away!