# FAQ: &Quot;Infrared Radiation Represents What Proportion Of The Total Energy Emitted By The Sun”?

Satellite measurements indicate that the atmosphere radiates thermal infrared energy equivalent to 59 percent of the incoming solar energy.

## How much infrared radiation does the sun emit?

In terms of energy, sunlight at Earth’s surface is around 52 to 55 percent infrared (above 700 nm), 42 to 43 percent visible (400 to 700 nm), and 3 to 5 percent ultraviolet (below 400 nm).

## What percentage of the energy from the sun is radiation?

The atmosphere radiates heat equivalent to 59 percent of incoming sunlight; the surface radiates only 12 percent. In other words, most solar heating happens at the surface, while most radiative cooling happens in the atmosphere.

## What is the total energy emitted by the sun?

The total power emitted by the sun is calculated by multiplying the emitted power density by the surface area of the sun. The sun has a radius of 695 x 106 m 4 giving a surface area of 6.07 x 1018 m2. Thus the total power output of the sun is 64 x 10 times 6.09 x 1018 m2, which is equal to 3.9 x 1026 watts.

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## Does the sun emit infrared radiation?

Our Sun emits light at progressively shorter wavelengths, too: the ultraviolet, X-ray, and even gamma-ray parts of the spectrum. But most of the Sun’s light is in the infrared, visible, and ultraviolet parts of the electromagnetic spectrum.

## How much energy does the Sun produce per square meter?

At Earth’s average distance from the Sun (about 150 million kilometers), the average intensity of solar energy reaching the top of the atmosphere directly facing the Sun is about 1,360 watts per square meter, according to measurements made by the most recent NASA satellite missions.

## How does the Sun emit energy?

How does the sun emit energy? The sun is a huge ball of gas, mostly hydrogen with a little helium. The gravitational attraction of all that mass makes enormous pressure in the interior that forces the hydrogen atoms to fuse together in a nuclear reaction that creates helium atoms and radiant energy.

## How do you calculate the energy emitted by the Earth?

In order to calculate the total amount of energy arriving at Earth, we need to know how much area is being lit. We then multiply the area by the insolation (in units of energy flow per unit area) to find out the total amount of incoming energy.

## How much percent of energy is absorbs from the Sun to Earth?

In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth’s surface while around 30% is reflected back to space and does not heat the surface.

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## What percentage of energy coming from the sun is re radiated towards the space?

30% is directly reflected back i.e re-radiated towards space by clouds, the earth’s surface, and different gases and particles in the atmosphere (the earth’s albedo is 0.3 on average).

## How much energy does the Sun have in joules?

The Sun emits 3.8 x 10^33 ergs/sec or 3.8 x 10^26 watts of poweror each second, an amount of energy equal to 3.8 x 10^26 joules. In one hour, or 3600 seconds, it produces 1.4 x 10^31 Joules of energy or 3.8 x 10^23 kilowatt-hours.

## How do you calculate power emitted?

The total power radiated is P = watts = x10^ watts. Finding the power radiated within a given wavelength range requires integration of the Planck radiation formula over that range. The radiated power per unit area is the Planck energy density multiplied by c/4.

## What is the total energy output of the Sun in one day?

Every day the sun generates about 3.94 X 10 23 kW. The energy radiated takes about 8 minutes to cover the 93 million miles to earth. The total energy which reaches the earth surface is about 80,000 X 10 12 W which is 10,000 times the current global energy demand.

Since the primary source of infrared radiation is heat or thermal radiation, any object which has a temperature radiates in the infrared. Even objects that we think of as being very cold, such as an ice cube, emit infrared. The warmer the object, the more infrared radiation it emits.

## What kind of radiation is emitted most by the sun?

Though the sun emits all of the different kinds of electromagnetic radiation, 99% of its rays are in the form of visible light, ultraviolet rays, and infrared rays (also known as heat).

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## What wavelength does the sun emit most energy?

Yellow Light Is the Most Intense Wavelength in Sunlight The greatest amount of sunlight is emitted at wavelengths around 500 nanometers, so you can easily see why sunlight appears yellow.