1 / 21

280 likes | 781 Views

Nature of Light and Laws of Geometric Optics. The nature of light Reflection Refraction Index of refraction Huygens’ Principle Dispersion and Prisms Total Internal Reflection. The Nature of Light. Light as Particles Tactile Theory (Ancient Greeks) Emission Theory (al-Haitham) Newton

Download Presentation
## Nature of Light and Laws of Geometric Optics

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Content is provided to you AS IS for your information and personal use only.
Download presentation by click this link.
While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

**Nature of Light and Laws of Geometric Optics**• The nature of light • Reflection • Refraction • Index of refraction • Huygens’ Principle • Dispersion and Prisms • Total Internal Reflection**The Nature of Light**• Light as Particles • Tactile Theory (Ancient Greeks) • Emission Theory (al-Haitham) • Newton • Light as Waves • Huygens • Maxwell • Quantum Theory • Photons**Reflection**Specular Reflection Diffuse Reflection**Concept Question**Suppose the sprinters wish to get from point Q on the beach to point P on the parking lot as quickly as possible. Which path takes the least time? • a • b • c • d • e • All paths take the same amount of time.**Index of Refraction**Going from one medium to another, the frequency of light does not change but its wavelength does. If one of the medium’s is vacuum (n=1), Snell’s Law of Refraction**Announcements**• Cell phones on silent. • Fermat’s principle: nothing quantitative– just understand the idea of minimum time.**h**Light Propagation Through a Slab q1 a q2 h x d**Dispersion and Prisms**angle of deviation**Angle of Deviation**a d q4 q1**Total Internal Reflection**Critical Angle, qc Only for n1 > n2**View From a Fish Eye**For q<qc: The fish sees above the water For q=qc : The fish sees the shoreline For q>qc : The fish sees the pond bottom**Applications of TIR**Retroreflector Periscope Fiber Optic Cable

More Related