Answer:
Physicists have built devices to move me very fast. My last seven letters can be commonly found in newspapers magazines and journals.
I am clean when Iβm black dirty when Iβm white.
I am asleep when you are awake I am awake when you fall asleep. I can fly but no feathers to aid my flight.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?
I start in little but I end in full you'll find me in half and complete.
When I'm born I fly. When I'm alive I lay. When I'm dead I run.