It's electromagnetic radiation, part of the spectrum of which is visible light. The question actually asks what is the AMOUNT of light a star gives off. So we are looking for a quantity here, measured in photons.
In relative terms we use absolute and absolute magnitude. [See related question]
The amount of light a star gives off is the intensity or luminosity. Absolute Magnitude measures the amount of light given off.
No. It's what we see. (The amount it actually gives off is called the absolute magnitude.)
The observer.
its called magnitude or luminosity. :) hope it helped you.
It's electromagnetic radiation, part of the spectrum of which is visible light. The question actually asks what is the AMOUNT of light a star gives off. So we are looking for a quantity here, measured in photons. In relative terms we use absolute and absolute magnitude. [See related question]
A star is a body of gas that gives off tremendous amounts of radiant energy in the form of light and heat through nuclear fusion reactions in its core.
A star
The amount of light that a star emits is measured using the concept of luminosity. Luminosity is the total amount of energy emitted by a star per unit of time, typically expressed in watts. It is determined by the star's size, temperature, and age. The brightness that we observe from Earth also depends on the star's distance from us.
Magnitude
It is actually absolute magnitude, opposed to apparent magnitude which is how much light stars appear to give off.
A star gives off light through a process called nuclear fusion, where hydrogen atoms in its core combine to form helium, releasing energy in the form of light and heat.
The actual amount of light a star gives off is called its luminosity. Luminosity is a measure of the total amount of energy emitted by a star per unit time, typically expressed in terms of watts or solar luminosities. Luminosity is a crucial parameter in understanding the characteristics and evolution of stars.