Dawes' limit


Dawes' limit
diffraction pattern matching Dawes' limit

Dawes' limit is a formula to express the maximum resolving power of a microscope or telescope. It is so named for its discoverer, W. R. Dawes, although it is also credited to Lord Rayleigh.

The formula takes different forms depending on the units.

R = 4.56/D D in inches, R in arcseconds
R = 11.6/D D in centimeters, R in arcseconds
where D is the diameter of the main lens (aperture)
R is the resolving power of the instrument

See also

  • Rayleigh criterion



Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Dawes-Limit — Das Dawes Kriterium beschreibt das maximale Auflösungsvermögen eines Mikroskops oder Teleskops. Es ist nach seinem Entdecker William Rutter Dawes benannt. Verwandt ist es mit dem von Lord Rayleigh beschriebenen Rayleigh Kriterium. Das Dawes… …   Deutsch Wikipedia

  • dawes' limit — ˈdȯz(ə̇z) noun Usage: usually capitalized D Etymology: after William R. Dawes died 1868 English astronomer : an approximate value of the resolving power of a telescope based on the theoretical size of the spurious disk being equal in seconds of… …   Useful english dictionary

  • Dawes (disambiguation) — Dawes may refer to:People: *Beman Gates Dawes, politician and oil executive who served two terms as a Republican Congressman from Ohio *Bill Dawes, an Irish American comedian, actor, and writer *Charles G. Dawes, banker, politician and 30th Vice… …   Wikipedia

  • Dawes — may refer to: Contents 1 People 2 Places 3 Craters 4 Other uses 5 See also …   Wikipedia

  • William Rutter Dawes — Infobox Scientist |name = William Rutter Dawes box width = image width = 150px caption = William R. Dawes birth date = 19 March 1799 birth place = West Sussex death date = 15 February 1868 death place = residence = citizenship = English… …   Wikipedia

  • Optical telescope — Eight Inch refracting telescope (Chabot Space and Science Center) An optical telescope is a telescope which is used to gather and focus light mainly from the visible part of the electromagnetic spectrum for directly viewing a magnified image for… …   Wikipedia

  • Angular resolution — describes the resolving power of any image forming device such as an optical or radio telescope, a microscope, a camera, or an eye. Definition of terms Resolving power is the ability of the components of an imaging device to measure the angular… …   Wikipedia

  • international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …   Universalium

  • Cherokee Commission — Oklahoma and Indian Territories 1890 The Cherokee Commission, was a three person bi partisan body created by President Benjamin Harrison to operate under the direction of the Secretary of the Interior, as empowered by Section 14 of the Indian… …   Wikipedia

  • United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …   Universalium


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.