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23 relations: Air mass (astronomy), Aperture, Apparent magnitude, Apparent place, Astronomical object, Astronomical seeing, Atmosphere of Earth, Atmospheric refraction, Density of air, Horizon, Illuminance, Interplanetary scintillation, Moon, Observational astronomy, Planet, Refraction, Scintillation, Scintillometer, Taylor & Francis, Turbulence, Twinkle, Twinkle, Twinkle, Little Star, Zenith.
Air mass (astronomy)
In astronomy, air mass (airmass, or AM) is the path length for light from a celestial source to pass through the atmosphere.
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Aperture
In optics, an aperture is a hole or an opening through which light travels.
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Apparent magnitude
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
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Apparent place
The apparent place of an object is its position in space as seen by an observer.
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Astronomical object
An astronomical object or celestial object is a naturally occurring physical entity, association, or structure that exists in the observable universe.
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Astronomical seeing
Astronomical seeing is the blurring and twinkling of astronomical objects like stars due to turbulent mixing in the Earth's atmosphere, causing variations of the optical refractive index.
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Atmosphere of Earth
The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity.
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Atmospheric refraction
Atmospheric refraction is the deviation of light or other electromagnetic wave from a straight line as it passes through the atmosphere due to the variation in air density as a function of height.
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Density of air
The density of air ρ (Greek: rho) (air density) is the mass per unit volume of Earth's atmosphere.
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Horizon
The horizon or skyline is the apparent line that separates earth from sky, the line that divides all visible directions into two categories: those that intersect the Earth's surface, and those that do not.
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Illuminance
In photometry, illuminance is the total luminous flux incident on a surface, per unit area.
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Interplanetary scintillation
In astronomy, interplanetary scintillation refers to random fluctuations in the intensity of radio waves of celestial origin, on the timescale of a few seconds.
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Moon
The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.
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Observational astronomy
Observational astronomy is a division of astronomy that is concerned with recording data about the observable universe, in contrast with theoretical astronomy, which is mainly concerned with calculating the measurable implications of physical models.
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Planet
A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.
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Refraction
Refraction is the change in direction of wave propagation due to a change in its transmission medium.
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Scintillation
Scintillation can refer to.
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Scintillometer
A scintillometer is a scientific device used to measure small fluctuations of the refractive index of air caused by variations in temperature, humidity, and pressure.
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Taylor & Francis
Taylor & Francis Group is an international company originating in England that publishes books and academic journals.
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Turbulence
In fluid dynamics, turbulence or turbulent flow is any pattern of fluid motion characterized by chaotic changes in pressure and flow velocity.
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Twinkle
Twinkle may refer to.
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Twinkle, Twinkle, Little Star
"Twinkle, Twinkle, Little Star" is a popular English lullaby.
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Zenith
The zenith is an imaginary point directly "above" a particular location, on the imaginary celestial sphere.
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Scintillation (astronomy), Scintillation (astrophysics), Stellar scintillation, Terrestrial scintillation, Twinkling (astronomy), Twinkling stars.
References
[1] https://en.wikipedia.org/wiki/Twinkling
