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What is the meaning of solid angle in the definition of emissive power?

What is the meaning of solid angle in the definition of emissive power?

Grade:12th Pass

1 Answers

Eshan
askIITians Faculty 2095 Points
3 years ago
Dear student,

Just like 2-dimensional angle is subtended at the center of a circle, a solid angle is a 3-dimensional angle subtended at the center of a solid sphere,

Emissive power is the energy emitted by a luminous body per unit area per unit time.

Hope it helps.

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