Challenge your mind with Lumosity, the #1 app with 50+ brain games for memory, math, vocabulary, and more. Start training today!

In SI units, luminosity is measured in joules per second, or watts. In astronomy, values for luminosity are often given in the terms of the luminosity of the Sun, L⊙.

luminosity noun lu· mi· nos· i· ty ˌlü-mə-ˈnä-sə-tē plural luminosities Synonyms of luminosity 1 a : the quality or state of being luminous

Luminosity, in astronomy, the amount of light emitted by an object in a unit of time. The luminosity of the Sun is 3.846 × 1026 watts (or 3.846 × 1033 ergs per second). Luminosity is an absolute …

LUMINOSITY definition: 1. the state of producing or reflecting bright light; the state of appearing to shine: 2. the…. Learn more.

Sharpen problem-solving skills in a few minutes each day with Lumosity’s personalised challenges. They adapt to keep you challenged as you strengthen key abilities, helping you …

Jan 10, 2020 · Astronomers use luminosity to express the brightness of an object and takes into account its distance, temperature, and other characteristics.

Log in to an existing account. Forgot your password? Reset it here.

Astronomy., the brightness of a star in comparison with that of the sun: the luminosity of Sirius expressed as 23 indicates an intrinsic brightness 23 times as great as that of the sun.

In this class, we will describe how bright a star or galaxy really is by its luminosity. The luminosity is how much energy is coming from the per second. The units are watts (W). Astronomers …