Riddle 17

so as I cant do I everyday, I think going with numbers is better 

Until I am measured, I am not known. Yet how you miss me, When I have flown. What am I?

2 cheers for the first 

1 for the other 

@llOverciverll and @Avaniyup got it right

is this about quantum physics

cause the "Until i am measured i am not known." sounds like its about quantum physics

Can be but right now, not much 

Tell me when you wanted to see the answer

Light

interesting answer but no 

Atom

Or Wave particle duality But because of quantum entanglement you can measure one and know the other but mehhhh

again interesting answer but no 

The answer is  .... Time 

1 cheer to whoever participated, anyway all answers were interesting