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Diagram showing the eastern and western quadratures of a superior planet like Mars. In spherical astronomy, quadrature is the configuration of a celestial object in which its elongation is a right angle (90 degrees), i.e., the direction of the object as viewed from Earth is perpendicular to the position of the Sun relative to Earth.
This glossary of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy is concerned with the study of celestial objects and phenomena that originate outside the atmosphere of Earth. The field of astronomy features an extensive vocabulary and a ...
When all three terms above are multiplied by an optional amplitude function, A(t) > 0, the left-hand side of the equality is known as the amplitude/phase form, and the right-hand side is the quadrature-carrier or IQ form. [B] Because of the modulation, the components are no longer completely orthogonal functions.
Quadrature encoder, a device that detects mechanical position changes and direction of movement; Illusionistic ceiling painting, sometimes called quadrature after the Italian term, quadratura; La Quadrature du Net (Squaring of the Net in French), a French advocacy group that promotes digital rights and freedoms of citizens
Planetary alignment is an astronomical term used to describe when planets gather closely on one side of the Sun at the same time. The rare parade should be visible until the end of February [Josh ...
IfA: either Institute for Astronomy (Hawaii) or Institute for Astronomy, School of Physics and Astronomy, University of Edinburgh, Scotland IFN – ( celestial object ) integrated flux nebulae, dust and gas outside the plane of the Milky Way, which are thus illuminated by the entire galaxy as opposed to a nearby star or stars
Such an event is commonly known as a "planet parade," though NASA noted that the moniker is not a technical astronomical term. What is a planet parade, and what will be visible?
Psychologists Arthur and Elaine Aron are known for research behind the “36 Questions That Lead to Love.” They share how their relationship has lasted over 50 years.