4 ms·
we can infer a little bit more than that. The framing of the two photographs is exactly the same (look at the two rocks in the lower right hand corner), and so
by lisper 5y ago
we can infer a little bit more than that. The framing of the two photographs is exactly the same (look at the two rocks in the lower right hand corner), and so that camera was almost certainly not moved between the frames. That seems pretty improbable to me if the cannonballs were actually delivered by cannons.