Some cool metal components china photos:
Thames Festival Finale Fireworks
Image by Dominic’s pics
Element of a Set / Virtual Firework Display Slideshow documenting the firework show that marked the end of the "the mayor’s" Thames Festival in London on the evening of Sunday September 11th 2011.
The display was presented by Pains Fireworks.
A delay in the start off of the display from the scheduled time was attributed by the crowds to incompetence by "Bumbling Boris" Johnson – the London Mayor – element of the British patrician "limited liability" ruling class. "I’m in charge, but if anything goes wrong, somebody else will be sacked…"
Like the extreme audio dynamic variety of Taiko or Samba drumming, it is not actually feasible to record the visual brilliance of fireworks with a camera. You have to expertise firework displays live, in particular person. These pictures have been taken at the slowest sensor speed (ISO one hundred), maximum aperture (to minimise diffraction "glare" effects) and with a assortment of exposure occasions ranging from about .five to 2 seconds. The intense light brought on some "bleaching" of the paths of the lights, and so the colours have been enriched if Photoshop. (In retrospect I may possibly have utilized a slightly smaller sized aperture.)Furthermore, the river and land areas have been selectively lightened in Photoshop. Fortuitously, a gentle breeze caused the smoke to drift eastwards, away from my vantage point on Waterloo Bridge, so the view of the fireworks was reasonably unobstructed by smoke.
Fireworks date from at least the 7th century in China. The colours are believed to have been conventional incandescent "black body" bonfire colours: red, orange, yellow and white. (It is theoretically achievable to create pale blue just by heating, but this calls for impracticably high temperatures. It is not feasible to heat one thing to "green hot" or "purple hot".) It is believed that from about 1830 in Italy metal salts have been introduced to generate a wider, richer hued, spectrum of colours by chemical luminescence. This approach can be problematic, as it can be hard to develop stable, practical, chemical compositions. It has been recommended that some shades of green are still tough to achieve.
See also:
Fireworks [Wikipedia]
Firework Colours [The chemistry of Fireworks by Reema Gondhia, Imperial College]
History of fireworks [Pyro Universe]
Thames Festival Weekend Finale Fireworks
Image by Dominic’s pics
Element of a Set / Virtual Firework Show Slideshow documenting the firework show that marked the end of the "the mayor’s" Thames Festival in London on the evening of Sunday September 11th 2011.
The show was presented by Pains Fireworks.
A delay in the start off of the show from the scheduled time was attributed by the crowds to incompetence by "Bumbling Boris" Johnson – the London Mayor – element of the British patrician "limited liability" ruling class. "I’m in charge, but if anything goes wrong, somebody else will be sacked…"
Like the intense audio dynamic variety of Taiko or Samba drumming, it is not actually feasible to record the visual brilliance of fireworks with a camera. You have to experience firework displays live, in individual. These photos have been taken at the slowest sensor speed (ISO one hundred), maximum aperture (to minimise diffraction "glare" effects) and with a variety of exposure instances ranging from about .five to two seconds. The intense light triggered some "bleaching" of the paths of the lights, and so the colours have been enriched if Photoshop. (In retrospect I might have employed a slightly smaller aperture.)Moreover, the river and land regions have been selectively lightened in Photoshop. Fortuitously, a gentle breeze caused the smoke to drift eastwards, away from my vantage point on Waterloo Bridge, so the view of the fireworks was fairly unobstructed by smoke.
Fireworks date from at least the 7th century in China. The colours are believed to have been traditional incandescent "black body" bonfire colours: red, orange, yellow and white. (It is theoretically attainable to create pale blue just by heating, but this demands impracticably higher temperatures. It is not feasible to heat some thing to "green hot" or "purple hot".) It is believed that from about 1830 in Italy metal salts have been introduced to make a wider, richer hued, spectrum of colours by chemical luminescence. This method can be problematic, as it can be difficult to create steady, practical, chemical compositions. It has been recommended that some shades of green are nonetheless tough to achieve.
See also:
Fireworks [Wikipedia]
Firework Colours [The chemistry of Fireworks by Reema Gondhia, Imperial College]
History of fireworks [Pyro Universe]