Strange water formation in long exposure

Started Jul 22, 2013 | Questions thread
AShimon Contributing Member • Posts: 797
Re: Could it be a rogue water droplet?

2esetters wrote:

Well, possibly slower.

The water on the waterfall did not start accelerating from zero if it was fed from a stream which already had some component of downward motion. Additionally, it is unlikely in such a short waterfall that terminal velocity was not reached. Since the falls is higher than the arc of the droplet, would they not have accelerated to a slightly different speed?

Of course, even if true, I don't know how that would create the phenomenon/artifact shown in the photo.

The vectors involved in the stream's downward motion are equivalent to a 1 degree or less, based on the apparent velocity of the water (judged as the distance between where the water leaves the streambed above and the resulting arc created by the water's motion).

Now, the peak of the parabolic curve is obviously where the droplet vector changes toward the Earth. Acceleration at the same distance from the Earth's center mass affects all objects the same way. In this scenario, a given drop of water at the moment of vector change at the top of the waterfall will fall at the exact same rate as the droplet from its parabolic peak.

The phenomenon is caused, I believe, by a reflection of the sunbeam on the pool below the waterfall. Which is oscillating at a moderately steady frequency. It is the simplest explanation that fits the evidence provided.

Post (hide subjects) Posted by
(unknown member)
(unknown member)
(unknown member)
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow