Dawes limit
Dawes limit The maximum
resolving power that can be obtained in practice from a telescope of a given aperture. It was established by W. R.
Dawes on the basis of tests of the visibility of double stars through various apertures. It states that a pair of sixth-magnitude stars can just be seen as double by a 1-inch (25.4-mm) telescope if they are separated by 4”.56. The table gives the resolving power of various instruments based on the Dawes limit.
dawes limit
Aperture mm | Resolving power ” |
|---|
25 | 4.63 |
50 | 2.32 |
75 | 1.54 |
100 | 1.16 |
125 | 0.93 |
150 | 0.77 |
175 | 0.66 |
200 | 0.58 |
250 | 0.46 |
300 | 0.39 |
400 | 0.29 |
500 | 0.23 |
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NANOTECHNOLOGY: Single-Molecule Wires Found to "Blink".
Newspaper article from: Industries In Transition; 6/1/2003; 700+ words
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Laboratory-standard wired molecules tend to "blink" randomly.
Newspaper article from: Science Letter; 6/16/2003; 700+ words
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NANOELECTRONICS: Single-Molecule Wires Found to "Blink".
Newspaper article from: Electronic Materials Update; 6/1/2003; 700+ words
; ...an unavoidable tendency to "blink" randomly. Stuart Lindsay...observation from scanning tunneling microscopes is that these wired molecules 'blink' on and off. It was assumed...molecules examined typically blink once every 30 seconds to 4...
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Sampras under the microscope
Newspaper article from: The Independent - London; 6/16/1995; ; 700+ words
; ...subject of deep analysis. Boris Becker and Pete Sampras were among those under the microscope at the Stella Artois Championships yesterday. Becker scarcely dare blink when he plays Javier Frana after scandalising the All England Club by receiving...
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Mystery of Nanoparticles Concealed in the Blink of an Eye.
News Wire article from: Ascribe Higher Education News Service; 7/15/2004; 700+ words
; ...bulb. "A quantum dot might blink for just a millionth of a second or it might blink for 15 minutes," said Matthew...groups combined powerful microscopes with video cameras to record...that the dots be placed on a microscope slide. Pelton's method...quantum dots one at a time with ...
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BOOK REVIEW: 'Blink' makes you think
Newspaper article from: Charleston Gazette; 7/2/2005; ; 700+ words
; ...This is not one of them. 'Blink' is concerned with the very...through the most powerful of microscopes? I think that would change...can be as much value in the blink of an eye as in the months...making decisions. Reading "Blink," you will acquire a newfound...
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BLINK-182 GETS AN A-PLUS FOR PUNK/POP ROCK PERFORMANCE.(LOCAL)(Review)
Newspaper article from: The Virginian Pilot; 5/25/2004; 674 words
; ...Amphitheater. The case study: blink-182 with The Used and Taking...first sample put under the microscope. Their plan of attack was...performed well. Finally it was blink-182's turn, and the punk...Go" and "The Rock Show," blink's songs were primarily upbeat...
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In preparing for NFL draft, which team will blink first?
Newspaper article from: Daily Breeze; 4/21/2005; 700+ words
; ...current best-selling book "Blink," Malcolm Gladwell tells...core sample using an electron microscope, mass spectrometry, X-ray...in just a few seconds -- a blink -- were able to tell it was...and perhaps taking this "Blink'' approach would be a wise...
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ARGONNE RESEARCHER STUDIES WHAT MAKES QUANTUM DOTS BLINK
News Wire article from: US Fed News Service, Including US State News; 10/1/2007; 700+ words
; ...of the nanoparticles. If a single dot is observed under a microscope, it can be seen to randomly switch between bright and dark...widely studied, and it has been found that a single dot can blink off for times that can vary between microseconds and several...
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blink microscope
Book article from: The Columbia Encyclopedia, Sixth Edition
blink microscope in astronomy, device for determining a change in position or magnitude (brightness) of a star relative to other stars in the...
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blink comparator
Book article from: A Dictionary of Astronomy
blink comparator An instrument in which a pair...differences between them; also known as a blink microscope . The images are usually of the same part...changed brightness will appear to jump or blink as the operator switches between the two...
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Tombaugh, Clyde W. (1906-1997)
Book article from: World of Earth Science
...He then used a special instrument, called a blink comparator, to examine the plates for telltale signs of moving bodies beyond the orbit of Earth. A blink comparator, or blink microscope, rapidly alternates — up to 10 times...
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Innes, Robert Thorburn Ayton
Dictionary entry from: Complete Dictionary of Scientific Biography
...s rotation. Innes was a pioneer in the use of the blink microscope in astronomy — in the face, surprisingly...Variable Stars, etc., With Pulfrich ’ s Blink-Milkroskop, and Remarks Upon Its Use in Astronomy...
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Pluto
Book article from: The Columbia Encyclopedia, Sixth Edition
...search for a ninth planet was resumed at Lowell Observatory , and on Feb. 18, 1930, using photographic plates and a blink microscope , Clyde W. Tombaugh discovered an object whose motion was consistent with that of a transneptunian planet. In 1978...
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