| Dictionary, Encyclopedia and Thesaurus - The Free Dictionary 1,723,990,929 visitors served. |
|
Dictionary/ thesaurus | Medical dictionary | Legal dictionary | Financial dictionary | Acronyms | Idioms | Encyclopedia | Wikipedia encyclopedia | ? |
vignetting |
Also found in: Dictionary/thesaurus, Legal, Financial, Encyclopedia, Wikipedia | 0.02 sec. |
|
vignetting, the peripheral reduction of light intensity in fluoroscopic image intensifiers. vignetting a grid fault in x-ray technology causing areas of peripheral underexposure.
vignetting 1. A graduated reduction in retinal illuminance due to light reaching the pupil at very oblique angles. 2. The difference in absorption between the two portions of photochromic fused bifocal lenses when the segment is not made of photochromic glass. See photochromic lens; retinal illuminance. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
|
| ? Mentioned in | |
|---|---|
|
| Medical Dictionary |
| Free Tools: |
For surfers:
Free toolbar & extensions |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|---|