http://www.veteranstoday.com/2015/08/25/confirmation-tianjin-was-nuked/
TAKE NOTE: "The key clue that allowed us to identify the use of a nuke in Yemen was the presence of scintillating pixels – white dots that flashed on and off briefly in the mobile phone videos of the explosion. The CCD imaging sensor within the camera phone is being struck by radiation thus causing a pixel to overload and appear white; in this way a mobile phone can serve double duty as a crude but effective radiation detector."
The article goes on to say that the cameras were too far away in the Tianjin explosion..
Scintillation is based on the distance from the blast. The farther you get away from the blast the less neutron exposure you get. CCD Cameras will detect scintillation but only at high levels. They are not sensitive to far field radiation patterns. All CCD cameras were too far away to be sensitive enough to show scintillation properly.
However...
So you have to look at the white out in the centre of the photo. This is where the brightness is so great that it overloads the ccd pickup chip causing a clipping effect. The fact that the fireball was whited out or clipped indicates that the colour temperature was over 4,000 degrees C. Only achievable in a nuclear blast. The cameras auto gain circuit clips the video level for being too bright so you get a white out on the screen.
More evidence. Keep reading.
Estimated to be a 3-5 kiloton blast.
It rained after the explosion, a common occurrence after a nuclear blast. https://en.wikipedia.org/wiki/Nuclear_fallout
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That made me a believer good job VT