Thursday, 30 March 2017

Amorphous white glowing shape or ghost?

White shapeI would hesitate to describe this photo (right) as showing a possible ghost. That's because ghosts are usually reported as looking just like normal human figures. Often the only reason a witness knows they are looking at a ghost is because such a person could not have been physically present. Or it may do something impossible, like disappear. The white shape here does, at least, have white 'appendages' on either side near the top, reminiscent of arms!

In popular culture ghosts are sometimes depicted as white and/or misty. So when people take a photo like the one here, an amorphous white glowing shape, they may interpret it as depicting a ghost. I'd simply describe it as a white anomaly. Anyway, what exactly is it?

I do know what the anomaly is because I took the photo deliberately, as I often do, to reproduce a type of anomalous photo. There are some clues in the photo itself. Firstly, the 'ghost' is entirely in front of the trees which means it could be out of focus. Secondly, there are several obvious white circles within the overall 'ghost' shape. These are typical of out of focus highlights, confirming the focus idea. Thirdly, there is, just below the main white anomaly, a faint transparent pale band going leftward to the edge of the frame. It is, of course, the stem of a plant. The object is an out of focus reed. It is bright because it is strongly illuminated by the sun.

White shapeHere (right) is exactly the same scene, taken at the same time, but with the reed in focus and the trees now out of focus. The reeds are not quite the same shape, overall, as the 'ghost' in the original photo. That's because there was a stiff wind at the time and the reeds were constantly moving, forming different 'ghost' shapes all the time.

It's difficult to say where the idea that ghosts are white or misty originated. It may have come from an artistic convention used to differentiate between ghosts and real people in paintings or movies. Or maybe it was simply because people thought there 'ought' to be some visual difference between ghosts and people. I honestly don't know where such ideas actually come from but I'm pretty sure it isn't from real life cases. Indeed, I suspect that many of the supposed attributes of ghosts in popular culture come from the widespread idea that ghosts are spirits, despite the lack of evidence to support that view (see here) from real life cases.

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