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
Flower Flower group attended festivals such as Join Alive, Rock in Japan Festival and Countdown Japan. In May 2014, the band released their second song, "Kamisama". In June, it was announced that Flower Flower would perform the four theme songs for the live-action adaptation of Daisuke Igarashi's manga "Little Forest", released in two parts in August 2014 and February 2015. Flower Flower performs the theme songs for each season, with summer and autumn released in 2014 and winter and spring in 2015. The name Flower Flower was picked as Yui wanted something natural in their band name. Flower Flower Vocalist Yui is