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How do you determine the total brightness of multiple light sources when their lumens are additive?

To determine the total brightness of multiple light sources when their lumens are additive, you simply add up the lumens of each individual light source. This will give you the total brightness of all the light sources combined.


Do all light sources have the same spectra as white light?

No, not all light sources have the same spectra as white light. White light contains all the colors of the spectrum, while other light sources may emit only specific colors or wavelengths, resulting in a different spectral composition.


How bright is a laser?

A laser can be incredibly bright, often far exceeding the brightness of traditional light sources. Its brightness is measured in terms of intensity, which can reach several million watts per square centimeter in focused beams. This high intensity is due to the coherent nature of laser light, where all the light waves are in phase and travel in the same direction. However, the perceived brightness also depends on factors like distance and the viewer's sensitivity to different wavelengths.


Are the star in big dipper in the same brightness?

No. The stars are not only not the same brightness, they are not the same distance from us - they just "appear" to be as part of the optical illusion of earthbound astronomy. They are all of varying brightness, though fairly close in brightness overall.


Are all heat sources are light sources?

no


What are the source of light for all objects in space?

The primary source of light for objects in space is usually stars, which emit light and other forms of electromagnetic radiation through nuclear fusion in their cores. Some objects in space can also reflect light from nearby stars or other sources, contributing to their overall brightness.


What are several sources of light energy?

The sun, light bulbs, candles, and LED lights are all sources of light energy.


Are all lights the same in terms of energy efficiency and brightness?

No, not all lights are the same in terms of energy efficiency and brightness. LED lights are generally more energy efficient and brighter than traditional incandescent or fluorescent lights.


Why two independent sources cannot behave as a coherent sources?

Light is emitted due to the de-excitaton of electrons from higher orbits of the various atoms of the light source.The de-excitation can also be to different levels in different atoms resulting in emission of different wavelengths.A light source will have numerous atoms in it.When you take two light sources it is not possible for all the atoms to get de-excited to the same shell at the same time(causing phase difference) that is why two independent sources cannot be coherent.


How many sources are there of light?

Trillions or more. Not to mention all the lights on our small planet, the universe contains billions of stars, and they're all emitting light.


Are all-stars light sources?

Yes , cause it has it's own light


How do you draw a diagram showing which moon would be brightest from Jupiter?

The four main moons all look about the same brightness as seen from Earth, and they are all at about the same distance from the Earth. That means that their brightness seen from Jupiter would depend on their distances from Jupiter.