Same millisecond? Prove it... I would buy same 10ms. If two cameras with frame rates of about 8frames/sec were shooting at random, the probability that they are

Same millisecond? Prove it... I would buy same 10ms. If two cameras with frame rates of about 8frames/sec were shooting at random, the probability that they are in the same millisecond is very low, like 1.5% or so. If they were in the same 10ms interval... more like 14.5%! Actually not that low, and the apparent difference in the waves might not actually be significant in 10ms (supposing the water was at it's maximum height 10ms^2*9.8m/s2=>less than a mm of movement!). Suppose that within a cm the photographs look the same, then this implies a time interval (at max water height) of 31ms. Over 31ms given the snapshot intervals there is about 38% chance of the photos being of the same 'moment'.