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Registered Member #63
Joined: Thu Feb 09 2006, 06:18AM
Location:
Posts: 1425
I was about to say it's looking down the back of a throat, or an artery, or something... but seriously, if you were looking down my throat, I've been known to 'explode' at various people spontaneously... hehe
Registered Member #75
Joined: Thu Feb 09 2006, 09:30AM
Location: Montana, USA
Posts: 711
Bjørn Bæverfjord wrote ...
I have several lenses and none of them have a bokeh remotely similar to that.
It seems to me that the picture is taken with a normal AF-S Nikkor 18-70mm lens and I have never been able to get any doughnuts from it. Did you use that lens Peter?
Sorry, I didn't know you were into photography. Excuse my baby-talk tone. There is a kind of cross-eyed feel to the whole image, as if it was taken with a mirror lens. Since Peter was messing around with water, could it have been a water drop on the front element, that caused this "mirror-lens" effect?
Registered Member #10
Joined: Thu Feb 02 2006, 09:45AM
Location: Bunbury, Australia
Posts: 1424
The shots are from the first 1mS after a fission explosion with a 'shutter speed' of 10nS. The Rapatronics camera used a Kerr cell which is an electro-optical device to rotate plane of polarisation a bit similar to the Pockels cell used for Q-switching lasers. The camera was 7 miles away. The wires vaporise and ionise under the intense radiation more readily than air at that stage and distance and form the classical 'rope tricks' (early version of string theory, I suppose).
joe wrote ...
... Excuse my baby-talk tone. ..... Since Peter was messing around with water, could it have been a water drop on the front element, that caused this "mirror-lens" effect?
"..messing around with water.." No I didn't splash the lens. I regard it as a holey visitation.
Next Mystery photo is one of mine. A little more sedate this time.
Registered Member #87
Joined: Thu Feb 09 2006, 01:36PM
Location: San Jose
Posts: 191
The shot is reflected off a fragment of a CDROM (Mario teaches typing - see his eyes). This gives a central reflection and first order diffraction with the ultraviolet being closer and the red diode beam being farther from the central reflection .
Wouldn't happen to be a nitrogen laser with a red laser diode angled in, would it?
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Mystery Photos from TDU
