Diaphragm (optics) curved blades improve the roundness of the iris opening. In a photograph, the number of blades that the iris diaphragm has can be guessed by counting the number of diffraction spikes converging from a light source or bright reflection. For an odd number of blades, there are twice as many spikes as there are blades. In case of an even number of blades, the two spikes per blade will overlap each other, so the number of spikes visible will be the number of blades in the diaphragm used. This is most apparent in pictures taken in the dark with small
Same Name the experience and how they did not. In an episode of CBS' "Big Brother 13" (which aired just prior to the show's premiere), the show was promoted during a luxury competition using both the celebrity David Hasselhoff, and the regular-guy David Hasselhoff. The celebrity Hasselhoff later entered the Big Brother house for a cameo appearance. Same Name Same Name is an American reality television series in which an average person swaps lives with a celebrity of the same first name and surname. It premiered on July 24, 2011 on CBS. After four episodes, CBS pulled the low-rated series from its