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
The Journey of Flower The Journey of Flower The Journey of Flower () is a 2015 Chinese television series starring Wallace Huo and Zhao Liying. It is based on the fictional novel of the same name written by Fresh Guoguo, which is inspired from Daoist legends regarding the path to immortality. The series was broadcast on Hunan TV every Wednesdays and Thursdays for two episodes per day, from 9 June to 7 September 2015. Hua Qiangu (Zhao Liying) is an unlucky orphan who is born with a strange scent which attracts demons, and therefore is hated and feared by all the villagers. When she