The Physics of Rainbows - Physical 1 Project PDF

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Summary

This was about the physics of rainbows....

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Introduction: where you introduce the topic (or phenomenon) that you are examining. You can include a little history behind the subject that you are studying, including pioneering work that has been done. Theory: You are studying some phenomenon in physics which can be described by an underlying theory. Here you will discuss the theories, along with all the math that comes along for the ride, and put your desired topic under a mathematical framework. It is important that you discuss math and physics in detail since a lot of the points will be allotted towards it. Implementation: Using the theories that you have talked about, explain how they can be used to describe your chosen topic. Here you are expected to go into details regarding the mechanism while also making connections with your theory. Remember that the theory and topic cannot exist separately. Practical applications: Discuss real world applications of your chosen topic (if they exist) Conclusion: This is self-explanatory. Conclude your report appropriately. Sources: The physics of rainbows- https://www.youtube.com/watch?v=M90XEREe66s The physics classroom https://www.physicsclassroom.com/class/refrn/Lesson-4/Rainbow-Formation Khan Academy https://www.khanacademy.org/science/in-in-class10th-physics/in-in-the-human-eye-and-the-colo urful-world/in-in-dispersion-of-light-in-prism/v/formation-of-rainbows-how-far-are-they-physics -khan-academy

Preliminary Report We have chosen to study the physics of rainbows for our project. We have found several materials online already in our preliminary research including the youtube video found on D2L and the Physics Classroom website’s tutorial on the formation of rainbows. We are continuing to find more information about the specifics of rainbow formation from reliable scientific sources such as Khan Academy and PubMed.

Introduction: Rainbows are formed when the sunlight is scattered by the presence of raindrops in the sky. The light from the sun enters the raindrop where it is refracted, internally reflected and then refracted again as the light leaves the raindrop. The colors are produced by the two refractions as the rays enter and leave. These rays are diverged towards the incoming light in order to form a bow that appears on the other side of the sun. Rays cluster strongly around the rainbow angle, and so the bow is at its brightest at that angle. Rays near the rainbow angle form the bow's bright outer edge. Rays close to the drop centre are deviated almost 180º back on themselves. Rays further from the centre are deviated less and less until the deviation reaches a minimum, which is about 37.5º for deep red light. Red light is refracted less than blue and its minimum deviation angle is less. Red is therefore on the outside of the primary bow.

Theory: -refraction -Snell’s Law -Rainbow geometry -Dispersion -internal reflection -prisms

Implementation: -detailed explanation of rainbow formation

Practical Applications: -seeing rainbows in real life (knowing how far away they are) Conclusion: -summary of info covered -why this matters...