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>> YOUR LINK HERE: ___ http://youtube.com/watch?v=OYj3frh7JUo
Aslam o Alikum. • Students we will discuss • This video explains the concept of radiation in Class 9 Physics Chapter 9. It also discusses the factors affecting radiation, using the Leslie Cube experiment as an example. • The video begins by defining radiation as the transfer of heat energy through electromagnetic waves. It then goes on to discuss the different types of radiation, including infrared radiation, visible light, and ultraviolet radiation. • The video then moves on to the Leslie Cube experiment, which is a simple experiment that demonstrates the effects of different surfaces on radiation. The Leslie Cube is a hollow metal cube with four sides, each of which is painted with a different color. The cube is filled with hot water and then placed in a room with a constant temperature. • The video then shows how the temperature of the different sides of the Leslie Cube changes over time. The side of the cube that is painted black cools down the fastest, while the side that is painted white cools down the slowest. This is because black surfaces are better absorbers of radiation than white surfaces. • The video then explains how the Leslie Cube experiment demonstrates the following factors that affect radiation: • Surface color: Black surfaces are better absorbers and emitters of radiation than white surfaces. • Surface temperature: Hotter surfaces emit more radiation than colder surfaces. • Nature of the surface: Dull surfaces are better absorbers and emitters of radiation than shiny surfaces. • Distance between the surfaces: The closer two surfaces are, the more radiation is exchanged between them. • The video concludes by summarizing the key concepts of radiation and the factors that affect it. • This video is ideal for students who are studying Class 9 Physics Chapter 9 or who are interested in learning more about radiation. It is also a good resource for teachers who are looking for ways to explain the concept of radiation to their students. • • Chapter 9 Class 9 : • • Chapter 9 Transfer of Heat Class 9 Ph... • Class 9 Physics • Numericals of All Chapters: • • Class 9th Numericals of All Chapters • Full Book Class 9 Physics : • • Class 9 Physics Full Book • Patreon : https://patreon.com/sirsadam?utm_medi... • • #chapter9 # TransferofHeat #class9physics
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