annual aberration
annual aberration The small displacement in position of a star's image during the year due to the motion of the Earth around the Sun. Annual aberration was discovered by J.
Bradley in 1728 from observations of the changes in distance from the zenith of the star Gamma Draconis. The ratio of the Earth's mean velocity to the speed of light gives the
constant of aberration, 20”.5. This is the maximum amount by which a star can appear to be displaced from its mean position. During the course of a year, the star appears to move around its mean position in a shape that ranges from a circle for a star at the ecliptic pole, via a progressively flattened ellipse, to a straight line for a star on the ecliptic. See also
E-Terms.
Cite this article
Pick a style below, and copy the text for your bibliography.
|
PRESIDENT BARACK OBAMA PRESIDENT BARACK OBAMA DELIVERS REMARKS AT THE UNITED NATIONS GENERAL ASSEMBLY
Transcript from: Washington Transcript Service; 9/23/2009; 700+ words
; ...abroad. I have been in office for just nine months, though some days it seems a lot longer. I am well aware of the expectations that...concrete actions we have taken in just nine months. On my first day in office, I prohibited without expectation or equivocation...
|
|
|
PRESIDENT BARACK OBAMA PRESIDENT BARACK OBAMA DELIVERS REMARKS AT A LUNCH HOSTED BY U.N. SECRETARY GENERAL BAN KI-MOON FOR HEADS OF STATE AND GOVERNMENT
Transcript from: Washington Transcript Service; 9/23/2009; 700+ words
; ...of your presence today to drive this point home, as certainly this is what drives me and this is what I think about day in and day out -- how to help people, how to help you, and how to build a stronger United Nations for a better world. Thank...
|
|
|
REP. HARRY E. MITCHELL CHAIRMAN REP. HARRY E. MITCHELL HOLDS A HEARING ON SENIOR EXECUTIVE SERVICES BONUSES
Transcript from: Washington Transcript Service; 9/23/2009; 700+ words
; ...objection, so ordered. Mr. Teague, thank you for being here. I ask unanimous consent that all members have five legislative days to revise and extend the remarks and that statements may be entered into the record. Hearing no objection, so ordered. I would...
|
|
|
SENIOR STATE DEPARTMENT OFFICIAL SENIOR STATE DEPARTMENT OFFICIAL HOLDS A BACKGROUND BRIEFING VIA TELECONFERENCE ON BURMA
Transcript from: Washington Transcript Service; 9/23/2009; 700+ words
; ...And we're now at that point of coming to the conclusions, and as P.J. said, we'll be rolling them out in the next day or two. The Secretary provided an intervention today, as he said, that did not go into details, but that highlighted the...
|
 "The O'Reilly Factor (Fox News Network)")
|
Pinheads & Patriots: Guinness Record Breakers, Dalai Lama
Transcript from: The O'Reilly Factor (Fox News Network); 9/23/2009; ; 700+ words
; ...com, OReilly@FOXNews.com. Name and town, name and town, name and town if you wish to opine. Here's the word of the day. When writing to us please do not be diabolical. Now, you think you know what that means, don't you? You think you know...
|
|
|
Dennis Miller Opines on Obama's Letterman Appearance, Gadhafi Speech
Transcript from: The O'Reilly Factor (Fox News Network); 9/23/2009; ; 700+ words
; ...even think Andy Kaufman's dead. I think this is Andy Kaufman. I think this is a big goof." This guy is as crazy as the day is long. And then they're cutting away to all our enemies in the audience. Everybody is sitting there in New York. And I...
|
|
PETRAEUS CITES NEED FOR CRITICAL WARFIGHTING SPECIALTIES
Transcript from: Regulatory Intelligence Data; 9/23/2009; ; 535 words
; ...skill areas" that need to be addressed by military personnel planners, Army Gen. David H. Petraeus told attendees at a one-day, symposium held at the National Press Club. After overseeing the successful 2007 surge-of-forces campaign in Iraq, Petraeus...
|
|
Serena Williams Puts Emotion Into Game, Memoir
Transcript from: NPR Morning Edition; 9/23/2009; ; 700+ words
; ...in the semifinal match that's become so famous at the U.S. Open. Ms. WILLIAMS: Yeah. WERTHEIMER: You've had a few days to think about what happened there, your outburst at the line judge. Why do you think it happened? Ms. WILLIAMS: Well...
|
|
|
An Indian Doctor's Cure-All: Charlie Chaplin
Transcript from: NPR Morning Edition; 9/23/2009; ; 700+ words
; ...was supposed to be at work. Dr. ASWANI: I laughed a lot and fell down the ground. Three times I saw that movie, and next day I lost the job. (Soundbite of laughter) REEVES: Since then, Aswani has seen "The Gold Rush" more than 200 times. His...
|
|
Gadhafi Unleashes Litany Of Complaints In U.N. Debut
Transcript from: NPR All Things Considered; 9/23/2009; ; 700+ words
; ...several years in a Libyan jail. He died earlier this year. Mohamed Eljahmi spoke to NPR early today as he got in place for a long day of protests. Mr. ELJAHMI: Unless you shut doors in Gadhafi and tell him to play by the rules and restrict him, he will always...
|
|
Caring for Children
Book article from: Growing Up: Issues Affecting America's Youth
...receiving public assistance benefits while not working, requiring poor parents to work even if they had to place young children in day care. In 2007, 72.8% of mothers in single-parent households worked. (See Table 3.2.) Nearly two-thirds (64...
|
|
Almanacs
Book article from: -Ologies and -Isms
11. Almanacs See also 25. ASTRONOMY ; 65. CALENDAR almanagist a person who compiles almanacs. ephemeris an astronomical almanac giving, as an aid to the astronomer and navigator, the locations of celestial bodies for each day of the year.
|
|
|
Catholicism
Book article from: -Ologies and -Isms
...lives and deaths of martyrs. 3. an official catalog of martyrs and saints, arranged according to the dates of their feast days. —martyrologist, n. —martyrologic, martyrological, adj. Molinism the doctrine of the 16th-century...
|
|
|
Dreams
Book article from: -Ologies and -Isms
...hence, any series of images that move and change rapidly, as a dream. —phantasmagorial , phantasmagoric , adj. pnigalion a nightmare. reverist a person much inclined to dream, especially to day-dream; a dreamy person.
|
|
|
Food and Nutrition
Book article from: -Ologies and -Isms
...formal discussion. syssitia the practice or custom, as among the ancient Spartans and Cretans, of eating the main meal of the day together in public to strengthen social and political bonds. trichinosis a form of food-poisoning, caused by infestation...
|
