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LP 160 thru white umbrella camera left, white bank camera right and sunlight from behind for rim light. Cactus V4 trigger.
for embraced LARP www.embraced.org.uk
strobist - dlite 4 with softbox, left 2.4
dlite 4 with softbox, right 2.0
trigger - pocketwizard
Wings Over the Rockies Air and Space Museum
MK 7 "Thor"
Nuclear Fission Bomb Using Implosion Trigger
The Mark 7 "Thor", initially produced in 1952, was the first nuclear bomb adopted by the US armed forces that could be carried by Air Force and Navy tactical fighter aircraft and carried internally by bombers such as the B-57. Because of the lack of ground clearance when hung under a fighter, the Mk-7 had a lower fin that was stowed in a retracted position on the ground and was extended once the fighter was in the air.
The Mark 7 was a capsule-type weapon with fission elements (Uranium 235) stored in a separate container. The Mk-7 tactical nuclear weapon used a new delivery method, the Low Altitude Bombing System (LABS). With LABS, the pilot flies the aircraft to an initial point, then commences a "4G" climb and releases the bomb at a designated point in the climb, effectively "tossing" it toward the target. When the bomb detonates, the aircraft is safely away!
The Mark 7 was in service longer than any atomic weapon in the U.S. arsenal up to that time. Nearly 1800 Mk-7 warheads were produced from '52 to ’68.
SPECIFICATIONS:
Length: 15 feet
Diameter: 24 inches
Weight: 1680 Ibs
Yield: Variable in the kiloton range
Implosion Assembly - Thor
The key idea in implosion assembly is to compress a subcritical fissionable mass by using specially designed high explosives. Implosion works by initiating the detonation of the explosives on their outer surface, so that the detonation wave moves inward. Careful design allows the creation of a smooth, symmetrical implosion shock wave. This shock wave is transmitted to the fissionable core and compresses it, raising the density to the point of super criticality. The compression occurs rapidly, providing insertion times in the range to 1 to 4 microseconds. The period of maximum compression lasts less than a microsecond.
This solid core design was used for Gadget, the first nuclear explosive ever tested, and Fatman, the atomic bomb dropped on Nagasaki. The Thor uses evolutionary improvements to that original design. The shorter insertion time used with implosion considerably increases a bomb's efficiency and provides the potential for light weight designs - in the best designs only several kilograms of explosive are needed to compress the core.
The principal drawback is its complexity and the precision required to make it work. Implosion designs take extensive research and testing, and require high precision machining and electronics.
This is Ethan. He is lead guitar for the band First Class Times. I like this one because his hand is in focus but you can still clearly read his facial expression.
Trigger freeze on target four misdiagnosed as a bad primer, went SHO to finish that target then to the reload, 5.58 sec
All images taken under a special permit granted by the Regiao Autonoma Dos Acores, Secretaria Regional Do Ambiente E Do Mar, Dreccao Regional do Ambiente.
The crowds in Zhangjiajie, Hunan snap thousands of photos every minute while vendors sell the right to stand on their shaded stools.
I spent the afternoon with a couple of my cousins at the Amazing Grace Equine Sanctuary, petting, talking to, and photographing horses :-) All the horses had the same reaction to me that dogs do!? It was great reconnecting with family and making some new friends too :-) Good people, great cause, awesome time. I'll be going back again soon! www.rescuehorses.org/
Stefan is killing Pioneer at the moment!
My flash triggers all seem to be faulty now, so I had to hand trigger them.
This is a stock and trigger assembly built together.Somewhat influenced by my Steampunk Sniper stock.Be sure to hide the black tube somehow.
The trigger head is connected to the trigger generator with the black trigger cables. The white cable from the trigger head connects to the grounding plate under the mylar insulation. Note one of the switches is connected to the resistor with white charging cables. (resistor out of view, except the top, silver donut).
Sound operated flash trigger. This is the one with the double-fire protection - wiring diagram and details can be found here. Anybody needing the veroboard layout let me know.
The box on the right is the power and microphone. The box on the left has the white LED light output and is strapped to the flash gun to trigger it (photo here). The 3m cable between the two boxes allows the microphone to be moved to control the timing delay - further away from the noise increases the delay.
Strobist info: Vivitar 285 on left and right high above set to full, shot through umbrellas and one behind subjects at 45 degrees set to 1/4 power. Fired using pw's. The shot of the subjects was shot at night. The alley was shot during the day and composite was in photoshop cs3.
D300 with nikon 17-55 f2.8 dx lens
Location: Downtown El Paso Texas
Characters: Lucca & Robo
Cosplayers: Evadoll & cellery
Photography by MikoBura
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Feel free to share and re-post the photos, but be sure to give proper credits to the photographer (me) and the cosplayer(s).
Please do not alter or modify my photos in any way. Do not reproduce my photos without my written consent. Thank you! \^^/
© MikoBura Photography
Triggered by StopShot from www.cognisys-inc.com . See equipment here www.flickr.com/photos/13084997@N03/3818938773/in/photostr...
Roy Rogers Horse (Trigger) and German Shepherd (Bullet) Float Ready for Parade by RFD-TV Tourament of Roses 123rd Parade
Testing out the Aputure Trigmaster (Nikon mount) on the Sony A6000 with a Nikon SB-600. Works like a charm.