Human eye The upper end of the range is given in terms of normal visual performance as 10 cd/m (100,000,000 or one hundred million candelas per square meter). The eye includes a lens similar to lenses found in optical instruments such as cameras and the same physics principles can be applied. The pupil of the human eye is its aperture; the iris is the diaphragm that serves as the aperture stop. Refraction in the cornea causes the effective aperture (the entrance pupil) to differ slightly from the physical pupil diameter. The entrance pupil is typically about 4 mm in diameter, although it
She Has a Name intermission. According to reviewer Lana Michelin of the "Red Deer Advocate", Kooman's changes strengthened the emotional pull of the play. Because of the amount of interest in "She Has a Name" in 2011, not enough tickets were available for the initial run, and a second run was planned for the end of 2011. To finance a tour of the play, Burnt Thicket Theatre raised money through fundraisers, which included the 2011 Calgary Ride for Refuge. In August 2011, extracts from "She Has a Name" were read at a conference in Strathmore called Justice Tapestry. A reading of the play took