Word: fovea
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
...concentrates heat and light in a spot on the retina. As distances increase, the spot grows smaller but remains as bright. At four miles away, a nuclear fireball 90 feet across forms a brilliant spot on the retina 1/300th of an inch in diameter. This is larger than the fovea centralis, the part of the retina that is used in accurate vision...
| 1 |