enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Prism correction - Wikipedia

   en.wikipedia.org/wiki/Prism_correction

   Prism dioptres. Prism correction is commonly specified in prism dioptres, a unit of angular measurement that is loosely related to the dioptre. Prism dioptres are represented by the Greek symbol delta (Δ) in superscript. A prism of power 1 Δ would produce 1 unit of displacement for an object held 100 units from the prism. [2]

3. History of the single-lens reflex camera - Wikipedia

   en.wikipedia.org/wiki/History_of_the_single-lens...

   The history of the single-lens reflex camera (SLR) begins with the use of a reflex mirror in a camera obscura described in 1676, but it took a long time for the design to succeed for photographic cameras. The first patent was granted in 1861, and the first cameras were produced in 1884, but while elegantly simple in concept, they were very ...

4. Lenticular lens - Wikipedia

   en.wikipedia.org/wiki/Lenticular_lens

   Lenticular lenses are sometimes used as corrective lenses for improving vision. A bifocal lens could be considered a simple example. Lenticular eyeglass lenses have been employed to correct extreme hyperopia (farsightedness), a condition often created by cataract surgery when lens implants are not possible.

5. 'Today' Hosts' Families Steal the Show on Take Your Kid to ...

   www.aol.com/entertainment/today-hosts-families...

   It was a family affair on the Thursday, April 25, episode of Today.. The hosts and crew of the NBC morning show brought their children out to 30 Rockefeller Plaza in New York City for a special ...

6. Single-lens reflex camera - Wikipedia

   en.wikipedia.org/wiki/Single-lens_reflex_camera

   A single-lens reflex camera ( SLR) is a camera that typically uses a mirror and prism system (hence "reflex" from the mirror's reflection) that permits the photographer to view through the lens and see exactly what will be captured. With twin lens reflex and rangefinder cameras, the viewed image could be significantly different from the final ...

7. TODAY's 'youngest viewer' returns to the show 30 years after ...

   www.aol.com/news/todays-youngest-viewer-returns...

   A beaming Roker held baby Jordan as he interviewed members of the crowd outside Studio 1A on July 1, 1994. “You guys have brought the youngest viewer to the TODAY Show yet,” Roker told Jordan ...