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
As the Flower Withers 2001's "The Dreadful Hours", with its title being slightly changed to "The Return to the Beautiful". Live versions of "The Forever People" can be found on the limited edition versions of "The Angel and the Dark River" and "For Darkest Eyes". This song is often played as the last song of the set in many of the band's live shows. Additional personnel As the Flower Withers As the Flower Withers was the first album by Yorkshire-based doom metal band My Dying Bride. The artwork was designed by Dave McKean. This is the only full-length My Dying Bride album on which