Originally Posted by AnneFan
Going on a kids book, it's a laser beam:
And by that it looks like when it first comes out it's transparent with visible outlines then becomes a solid beam.
Faced with the choice between changing one's mind and proving that there is no need to do so, almost everyone gets busy on the proof. ~John Kenneth Galbraith
All change is not growth, as all movement is not forward. ~Ellen Glasgow