Dictionary » D » Depth of field

Depth of field

Depth of field

(Science: microscopy) The depth or thickness of the object space that is simultaneously in acceptable focus.

The distance between the closest and farthest objects in focus within a scene as viewed by a lens at a particular focus and with given settings. The depth of field varies with the focal length of the lens and its f-stop setting or numerical aperture, and the wavelength of light. Depth of fields only a small fraction of a micrometre can be achieved at 546 nm with microscope lenses of N.A. Greater than 0.9.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Re: New to science (sort of), and need suggestions.

... American is a good resource for undergrad-level reading outside of your field. American Scientist takes it up a notch, allowing a bit more math in ... lists and notes on definitions. The Dummies series includes more in-depth titles, like Genetics for Dummies (I recall helping a Physicist friend ...

See entire post
by jonmoulton
Fri Apr 27, 2012 3:20 pm
 
Forum: General Discussion
Topic: New to science (sort of), and need suggestions.
Replies: 3
Views: 1658

help please 1

... are looking at a 3-dimensional structure with shadows, we get a greater depth of field than with the TEM, but less magnification. - The cell theory is one of the great unifying ...

See entire post
by Stephen1993
Thu Feb 16, 2012 2:30 pm
 
Forum: Cell Biology
Topic: help please 1
Replies: 9
Views: 5843

Re: Careers in Environmental Biology

... you need to know about where to start pursuing a career in this field 2. http://www.ehow.com/list_6372367_careers-environmental-biology.html ... years left 4. http://www.collegegrad.com/careers/proft63.shtml - an in depth look at what the job as a biological scientist Biology is such a great ...

See entire post
by harrison425
Fri Feb 25, 2011 11:04 pm
 
Forum: Ecology
Topic: Careers in Environmental Biology
Replies: 30
Views: 46962

Evolution Presentation Need Help

... debate for the past six years, and began studying it in great depth, for the past 2 years or so. I'm pretty comfortable with the theory, ... spread of animals 4) Nested Hierarchy 6) Summarize findings and field questions. Is this too elaborate for people with no understanding of ...

See entire post
by SouthernApe
Sun Jan 16, 2011 1:44 pm
 
Forum: Evolution
Topic: Evolution Presentation Need Help
Replies: 3
Views: 3330

Re: Job opportunities with Biochemistry and other careers

... answer is that there are three broad categories of employment in those fields: industry, academia and government. A good place to go to get some ... that has articles touching on many of these disciplines. It is not in-depth but might give a social overview of life in some of these fields. Scientific ...

See entire post
by jonmoulton
Mon Dec 06, 2010 4:59 pm
 
Forum: General Discussion
Topic: Job opportunities with Biochemistry and other careers
Replies: 2
Views: 1605
View all matching forum results

This page was last modified 02:00, 27 October 2006. This page has been accessed 24,287 times. 
What links here | Related changes | Permanent link