物理学的光现象（Light phenomena in Physics）.doc

物理学的光现象（Light phenomena in Physics） Propagation of A_____ light and reflection of light by planar mirror imaging Learning goal 1., we know that light travels along a straight line in the same homogeneous and transparent medium, and can be used to explain the formation of phenomena, solar eclipses, lunar eclipses and so on; 2. know the speed at which light travels in a vacuum. It is known that light travels faster in other mediums than in vacuum; 3. know what is the phenomenon of light reflection; 4. understand the law of light reflection and apply the law of reflection to solve some simple problems; 5. know specular reflection and diffuse reflection, and can be used to explain some simple phenomena; 6. know the concept characteristics and the virtual image plane mirror imaging, know the plane mirror; 7. a preliminary study by imaging optical path study of geometric optics. Learning focus 1, the use of light propagation in the straight line to solve practical problems; 2, understand the law of light reflection, and apply the law of reflection to solve some simple problems; 3. Understand the characteristics and applications of flat mirror imaging. Learning difficulties 1, we know that light travels in a homogeneous medium in a straight line, and can be used to explain the formation of phenomena, solar eclipses, lunar eclipses and so on; 2, understand the law of light reflection, and apply the law of reflection to solve some simple problems; 3, know specular reflection and diffuse reflection, and can be used to explain some simple phenomena; 4, know the concept characteristics and the virtual image plane mirror imaging, know the plane mirror. --------------------------------------------------------------- Knowledge sorting: First, the propagation of light Light source: a light emitting object called a light source. Natural light source: sun, firefly, etc. Artificial light sources: torches, electric lights, candles, etc. The propagation of light: light travels in a homo