Question

Observation of solar energy

Answer 1

Answer:

Solar observation is the scientific endeavor of studying the Sun and its behavior and relation to the Earth and the remainder of the Solar System. Deliberate solar observation began thousands of years ago. That initial era of direct observation gave way to telescopes in the 1600s followed by satellites in the twentieth century.

Observation types

Direct solar radiation

This is solar energy that directly reaches the earth's surface from the sun. It is defined as direct solar energy per unit area of a plane perpendicular to a direct solar beam.

Diffuse solar radiation

This is solar energy that reaches the earth's surface from all directions of the sky via diffusion and reflection by way of an atmospheric component. It is defined as the diffused solar energy arriving per unit area on a horizontal plane.

Global solar radiation

This is the total solar energy that reaches the earth's surface from all directions of the sky. It is defined as the total solar energy arriving per unit area on a horizontal plane.

Reflected solar radiation

This is solar energy that reaches the earth's surface and is then reflected upward. It is defined as the total upward solar energy arriving per unit area on a horizontal plane.

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