Talking about blowing...I've notice some officials blow their whistle everytime (and I mean everytime) they have a throw-in situation. This isn't Volleyball where you have to blow your whistle all the time.
My understanding is that the only time you have to blow your whistle on a throw-in situation is after a time out or start of a new quarter.
Someone once said they do it so that everyone is aware you are going to put the ball into play. A good argument?
Regarding the electric whistle, what about officials that sweat alot, wouldn't they shock themselves..oh wait, we don't sweat, we perspire