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
Bob the Angry Flower the Angry Flower experiences all emotions at exaggerated levels. He builds giant killer robots, he deploys world-destroying lasers. He is sort of like your id with an unlimited budget." Notley has released his "Bob the Angry Flower" work under an original license. The license only enables sale of T-shirts with "Bob the Angry Flower" material from CafePress stores, and also requires that the image is sent to Notley, and by implication the link of the relevant CafePress store.<ref name='angryflower.com/t-shirts'> </ref> In 2006, Bob the Angry Flower was released as a collection by Tachyon Publications. Bob the Angry Flower Bob the