1. During indicates within a period of time.
We slept during the day.
They practiced basketball during the summer.
2. During means at the same time as another event.
I slept during the football game.
They lived in the north during the war.
Fastest Things Known To Man
Although we just went on about how photons are the fastest particles in the universe (except for two very deadly roundhouse kick delivering mechanisms), scientists have been debating whether or not this is in fact true ever since Einstein came out with his theory. Although tachyons (hypothetical particles that move faster than light) have been proposed in the past, CERN has recently completed experiments where they found muon neutrinos that allegedly covered the distance between Geneva Switzerland and Gran Sasso, Italy 60 nanoseconds faster than light would have. As of yet, however, they have refrained from drawing conclusions from the experiment so the photon is still king.