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 rape scene as an actor. The premiere of "She Has a Name" was produced by Burnt Thicket Theatre in partnership with Raise Their Voice. The office of Joy Smith, MP for Kildonan—St. Paul, released a statement advertising the premiere of "She Has a Name". The premiere took place at the EPCOR Centre for the Performing Arts in Calgary in February 2011. Performances were scheduled to run on the centre's Motel stage between February 23 and March 5. Tickets quickly sold out. Four days after the premiere, Burnt Thicket Theatre moved the play to the Scott Block Theatre in Red Deer,