What is beam radiation and diffused radiation what is mean by global radiation define solar constant?

The solar radiation that reaches the Earth’s surface without being diffused is called direct beam solar radiation. The sum of the diffuse and direct solar radiation is called global solar radiation. Atmospheric conditions can reduce direct beam radiation by 10\% on clear, dry days and by 100\% during thick, cloudy days.

What radiation is called as a diffuse radiation?

Diffuse radiation is sunlight that has been scattered by atmospheric constituents and/or by the surface.

What are the 3 types of solar radiation?

The three relevant bands, or ranges, along the solar radiation spectrum are ultraviolet, visible (PAR), and infrared. Of the light that reaches Earth’s surface, infrared radiation makes up 49.4\% of while visible light provides 42.3\% 9. Ultraviolet radiation makes up just over 8\% of the total solar radiation.

What are 4 types of radiation from the Sun?

All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat.

What is beam radiation another name?

Photon beam radiation therapy is another name for what is usually known as external beam radiation therapy. It uses photon beams to get to the tumor but also can damage healthy tissue around the tumor. Photons are used in treatments that are given by a machine called a linear accelerator.

What is beam radiation How is it measured?

Instrument used for measuring the intensity of direct solar radiation, that is, beam radiation is called pyrheliometer.

What is beam radiation?

Beam radiation is the solar radiation received from the Sun without having been scattered by the atmosphere. Diffuse radiation is that received from the Sun after its direction has been changed by scattering by the atmosphere.

What is diffuse beam?

Diffuse sky radiation is solar radiation reaching the Earth’s surface after having been scattered from the direct solar beam by molecules or particulates in the atmosphere. Under an overcast sky, there is no direct sunlight, and all light results from diffused skylight radiation.

In which month solar radiation is maximum?

2.5. The maximum annual value during the three-decade study period occurred in 1985 when it reached 7181.12 MJ/m2, whereas the minimum value of 6604.48 MJ/m2 occurred in 1998. July has the largest monthly global radiation, which has reached 803.64 MJ/m2, more than two times that of December and January.

What radiation is bad for humans?

Alpha particles are the most harmful internal hazard as compared with gamma rays and beta particles. Radioactive materials that emit alpha and beta particles are most harmful when swallowed, inhaled, absorbed, or injected. Gamma rays are the most harmful external hazard.

Which type of radiation is the most penetrating?

Gamma radiation
Gamma radiation or x rays are able to travel many feet in air and many inches in human tissue. They readily penetrate most materials and are sometimes called “penetrating” radiation.

What is the difference between solar radiation and diffuse radiation?

It is used to describe solar radiation traveling on a straight line from the sun down to the surface of the earth. “Diffuse radiation”, on the other hand, describes the sunlight that has been scattered by molecules and particles in the atmosphere but that has still made it down to the surface of the earth.

What is the difference between external beam and diffuse sky radiation?

BEAM RADIATION External beam radiotherapy or teletherapy is the most common form of radiotherapy. DIFFUSE RADIATION Diffuse sky radiation is solar radiationreaching the Earth’s surface after having been scattered from the direct solar beam by molecules or suspensoids in the atmosphere.

What is direct radiation?

Direct radiation also known as “beam radiation” or “direct beam radiation” is used to describe solar radiation travelling on a straight line from the sun down to the surface of the earth.

What is diffuse light from the Sun?

DIFFUSE RADIATION Diffuse sky radiation is solar radiationreaching the Earth’s surface after having been scattered from the direct solar beam by molecules or suspensoids in the atmosphere. It is also called skylight, diffuse skylight, or sky radiation and is the reason for changes in the color of the sky.