Euan12345 said:Summary:: Say you had a green and red LED, both with a luminosity of 2 W would the combined luminosity be 4 W or still 2 W?
Say you had a green and red LED, both with a luminosity of 2 W would the combined luminosity be 4 W or still 2 W?
Luminosity is calculated by multiplying the surface area of a star by its effective temperature to the fourth power.
Luminosity is typically measured in terms of solar luminosity, which is the amount of energy emitted by the Sun in one second. It is also commonly measured in watts or ergs per second.
No, luminosity cannot be negative. It is a measure of the total energy emitted by a star, so it is always a positive value.
Luminosity is directly related to a star's mass and temperature, which are key factors in determining its lifespan. A higher luminosity generally means a shorter lifespan, as the star is using up its energy at a faster rate.
Luminosity is one of the main factors used to classify stars. It is often plotted on a Hertzsprung-Russell diagram along with a star's temperature, which helps to determine its size, age, and evolutionary stage.