reflection.pptx
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This document outlines objectives and concepts around the topic of light reflection. The general objectives are to develop students' thinking, imagination, scientific attitude and understanding of science concepts. Specific objectives are for students to understand reflection of light, define it, give examples, and state the laws of reflection. Key concepts explained include the definition of reflection as light bouncing back when hitting a surface, examples of reflection, and the first law of reflection which states that the angle of incidence equals the angle of reflection.
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This document discusses the laws of reflection. It defines reflection as when light rays change direction after striking an object. Mirrors are defined by the law of reflection, which states that the incident, reflected, and normal rays all lie in the same plane and the angle of incidence equals the angle of reflection. There are three types of mirrors: plane, convex, and concave. The document then explains the properties and behaviors of light for each mirror type. It concludes by defining the key terms related to the laws of reflection, such as incident ray, reflected ray, normal ray, angle of incidence, and angle of reflection.
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Light is part of the electromagnetic spectrum and can be described as waves or particles called photons. Reflection occurs when light bounces off a surface, either in the same direction (specular reflection) or many directions (diffuse reflection). Refraction is when light changes speed and direction when passing from one medium to another due to the media having different refractive indices, as described by Snell's Law. Spherical mirrors and lenses use reflection and refraction, respectively, to focus or spread light beams. The refractive index quantifies how much a medium slows light, and dispersion is when a prism separates white light into a rainbow spectrum.
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This document provides an overview of the grade 11 physical science topic of light, including geometrical optics. It discusses the nature of light, reflection of light, refraction of light, and lenses. Reflection is defined as the bouncing of light off a surface, while refraction is the bending of light when passing from one medium to another. Examples of refraction include light bending as it passes from air to water. Lenses are able to refract light in a way that converges or diverges the beams, with converging lenses bringing light to a focus and diverging lenses spreading it out. Diagrams are provided to illustrate reflection, refraction, and the use of lenses to form images.
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This document provides an overview of a lesson on the reflection of light. It will discuss specular and diffuse reflection, the law of reflection for flat mirrors, and the nature of images formed by flat mirrors. The lesson contains several stops where key concepts are explained, including defining reflection, discussing reflective surfaces and the difference between specular and diffuse reflection, explaining the law of reflection using the angle of incidence and angle of reflection, and describing how flat mirrors form images. The lesson will also cover total internal reflection. Evaluation questions are provided to test understanding.
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Various optical instruments have been designed, using the property of reflection and refraction. Copy the link given below and paste it in new browser window to get more information on Introduction Of Ray Optics and Optical Instruments www.askiitians.com/iit-jee-ray-optics/introduction-of-ray-optics-and-optical-instruments/Opticsandlight
Light can be produced through natural and artificial means. It exhibits properties of reflection, refraction, and wavelength. The human eye detects visible light and uses lenses and color-sensitive cells to form images and see color. Emerging technologies like LEDs and OLEDs use electricity to produce light through electroluminescence, while older light sources like incandescent and fluorescent bulbs work through heating and gas excitation. Proper understanding of light, vision, and lighting enables evaluation of their technological impacts.
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Light is part of the electromagnetic spectrum and can be described as waves or particles called photons. Reflection occurs when light bounces off a surface, either in the same direction (specular reflection) or many directions (diffuse reflection). Refraction is when light changes speed and direction when passing from one medium to another due to the media having different refractive indices, as described by Snell's Law. Spherical mirrors and lenses use reflection and refraction, respectively, to focus or spread light beams. The refractive index quantifies how much a medium slows light, and dispersion is when a prism separates white light into a rainbow spectrum.
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were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
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. The X-ray sources exhibit a highly concentrated spatial distribution,
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massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
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reflection.pptx
- 1. GENERAL OBJECTIVES • To develop power of thinking and imagination among the students. • To develop scientific attitude and interest among the students. • To enable students to understand the concept of science.
- 2. Cognitive mapping. LIGHT REFLECTION DEFINiTION EXAMPLE LAW OF REFLECTION
- 3. Instructional objectives Pupil will be able to • Understand reflection of light. • Define reflection of light. • Give examples for reflection. • State laws of reflection.
- 4. DOG AND THE BONE STORY:
- 5. What is happening here?
- 6. REFLECTION BOUNCING BACK OF LIGHT WHEN IT HITS A SURFACE IS CALLED REFLECTION.
- 10. A ray of light that hits a surface is called incident ray. The ray of light that bounced back from the surface is called reflected ray. An imaginary line draw at the point of incidence is called a normal.
- 11. Angle between incident ray and the normal is called angle of incidence. Angle between the reflected ray and the normal is called angle of reflection.
- 12. Observe the pictures. Angle of incidence = Angle of reflection
- 13. 1ST Law of reflection. The angle of incidence is equal to the angle of reflection.
- 14. The incident ray ,reflected ray and the normal at the point of incidence lie in the same plane.
- 22. HUMAN EYE
- 26. LOUIS BRAILLE