Lesson: Radiation Pressure on Perfectly Reflective Surfaces | Nagwa Lesson: Radiation Pressure on Perfectly Reflective Surfaces | Nagwa

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Lesson: Radiation Pressure on Perfectly Reflective Surfaces Physics • Third Year of Secondary School

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In this lesson, we will learn how to calculate the pressure exerted on an object by light that is reflected by it.

Lesson Plan

Students will be able to

  • recognize that light exerts a pressure,
  • recognize that the pressure exerted by light is greater if the light is reflected than if it is absorbed,
  • use 𝑃=2𝐼𝑐 to find the pressure exerted by light of a given intensity that is reflected off a surface,
  • use 𝐹=2𝐼𝐴𝑐 to find the force exerted by light of a given intensity that is reflected off a surface with area 𝐴.

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