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
The Flower Kings Stolt's brother Michael on bass and Tomas Bodin on keyboards. The five performed their first gig on 20 August 1994 at an outdoor festival in Uppsala, Stolt's hometown and the city where "The Flower King" was recorded. After they decided to become a full time band, they officially adopted the name The Flower Kings, named after Stolt's album. Stolt had produced a list of potential titles for the record, one of which was "The Flower King", and chose it because of its positive meaning and its reference to the hippie era of the 1960s. After performing a series of concerts