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
She Has a Name She Has a Name She Has a Name is a play about human trafficking written by Andrew Kooman in 2009 as a single act and expanded to full length in 2010. It is about the trafficking of children into sexual slavery and was inspired by the deaths of 54 people in the Ranong human-trafficking incident. Kooman had previously published literature, but this was his first full-length play. The stage premiere of "She Has a Name" was directed by Stephen Waldschmidt in Calgary, Alberta in February 2011. From May to October 2012, "She Has a Name" toured across Canada. In conjunction