I saw nothing. Perhaps you could check with someone
who was actually there and watched it as it happened.
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object B moves
Object B must be circumscribed about object A.
.Object B must be inscribed in object A.
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Anything that is not the measure of intrinsic brightness of a celestial object.
Relative brightness refers to how bright an object appears compared to another object. It is often used in the context of visual perception to describe the perceived brightness of different objects in a scene. Brightness can be influenced by factors such as the intensity of light emitted or reflected by an object and the sensitivity of the human eye to different wavelengths of light.
Apparent brightness: how bright an object - such as a star - looks to us. True brightness: how bright such an object really is. Defined as: how bright it would look at a standard distance.
The brightness of the color of an object is determined by the amount of light that is reflected by the object's surface. The color itself is determined by the wavelengths of light that are reflected, with the object appearing brighter or darker depending on how much light is reflected back to our eyes.
it is beacause it is a ball of fire
The light emitted by the bulb overwhelms our eyes' ability to perceive its physical structure, making it difficult for us to see the bulb itself when it is switched on. Our eyes are more sensitive to the brightness of the light produced rather than the object emitting it.
If the distance to the object is halved, its apparent brightness will increase by a factor of four. This is because the inverse square law states that brightness is inversely proportional to the square of the distance.
It is called Vmag. This is the visual magnitude of the object. Visual magnitude is a scale used by astronomers to measure the brightness of a star or other celestial object. Visual magnitude measures only the visible light from the object. The lower the V-MAG the brighter the star. You can go to http://seasky.org/pictures/sky7b14.html to learn more.
by using a photometer
Absolute magnitude is a measure of a celestrial object brightness at a set distance. For a star, it would be the brightness at a set distance of 10 parsecs or around 32 lightyears. For a solar system object it would be the brightness from 1 AU. It takes the objects distance out of the equation so that star brightnesses can be directly compared.
A "standard candle" in astronomy is an object whose luminosity (its true brightness, not just how bright it seems to us) can be estimated, based on characteristics of that type of object. Then its distance can be estimated from its "apparent magnitude". The stars called "Cepheid variables" are a good example. The rate at which their brightness varies is closely linked to their luminosity.
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