The Count Down Begins. Own Dark Skies on Blu-Ray™ May 28th
Hunting for Alien Megastructures
I think the coolest thing ever would be to find remnants of or make contact with a type three civilization. Thinking about that raises so many questions though. How would we view them? Would we even be able to recognize them as a form of life? They’d be so far advanced we may not be able to. We are not even a type one civilization. Will we make it that far? We’re close, will I live to see a planetary society?
The images shown are photographs of ethylene/air/nitrogen diffusion flames stabilized behind a bluff centerbody. The two images on the top show the centerbody flame photographed from the side (top left) and top views (top right). The blue regions are associated with the flame front and the other colors of the flame are largely due to blackbody radiation from the soot. The intense yellow radiation is from soot trapped in a tight ring vortex downstream of the stabilizing bluff body. The motion of the soot trapped in the vortex can be seen in the longer exposure photograph taken from the top.
The bottom two images are of a centerbody flame with the same inlet flow velocities as the case shown above but with higher nitrogen content in the feed gases. The image on the lower left shows a blue ring flame that forms around the main flame immediately downstream of the centerbody. This blue ring flame exhibits a slight oscillation in the vertical direction. The image on the lower right shows the region downstream of the ring flame for the same conditions. The disturbances in the downstream region of the flame are amplified as it passes through the tube, resulting in the large structures shown in the short exposure (0.8 ms) photo.
Credit: Scott Stouffer, Garth Justinger (University of Dayton Research Institute), Mel Roquemore, Amy Lynch, Vince Belovich, Joe Zelina, Jim Gord (Air Force Research Laboratory, Wright Patterson Air Force Base), Keith Grinstead, Vish Katta and Kyle Frische (Innovative Scientific Solutions Incorporated)
Flickr has had a re-boot and, as a result, it has released all of the photos of mine it previously had locked up under the ‘Flickr Pro’ paywall. As a result I suddenly have access to 3,000 photos I took between 2007 and 2012 when I was much more interested in photography.
I’m going to be slightly self-indulgent and choose a few of my favourites to post in location-based sets. The first being ‘London’.