網頁2011年2月25日 · The apparent magnitude is the brightness of a star as observed from Earth, and is useful for comparing stars from our perspective. Whereas, absolute magnitude is the brightness as if it were ... 網頁The brightness of a star as seen from Earth is its _____ _____. The actual brightness of a star, calculated by knowing its distance from Earth and apparent brightness, is its 10. The distance to stars that are close to Earth can be measured by ...
Astronomy Ch. 11 Flashcards Quizlet
網頁2024年3月26日 · Because Venus is a planet it doesn’t emit any visible light of its own like a star does. All planets shine by reflecting starlight from the star they orbit, which in the case of Venus is the Sun. The brightness of a planet is determined by a combination of three different factors. Factor one is the planet’s distance from the Sun. 網頁Apparent magnitude is the brightness as observed from earth, whereas absolute magnitude measures the intrinsic luminosity of a celestial object. This means that absolutely magnitude does not look at apparent brightness and uses the reverse logarithmic scale to define a luminosity for a star or object would have if it were observed from a distance of … higher order of thinking questions
Brightest Stars - Michigan State University
網頁2024年1月11日 · Observed from Earth, the night sky appears two-dimensional. But it's anything but. However, it took astronomers thousands of years to figure out how to measure distances of stars from our planet ... 網頁2024年4月11日 · If m 1 and m 2 are the magnitudes of two stars, then we can calculate the ratio of their brightness ( b 2 b 1) using this equation: m 1 − m 2 = 2.5 log ( b 2 b 1) or b 2 b 1 = 2.5 m 1 − m 2. Here is another way to write this equation: b 2 b 1 = ( 100 0.2) m 1 − m 2. Let’s do a real example, just to show how this works. 網頁2009年9月8日 · 05. What two parameters does the brightness of a star depend on? 1) If you mean the apparent brightness, as seen from Earth, that depends on the star's real … how find hypotenuse of a triangle