Pin hole camera was invented by a Muslim scientist ibn-al-haitham.An Egyptian polymath (born in Iraq) whose research in geometry and optics was influential into the 17th century; established experiments as the norm of proof in physics (died in 1040). Another inventor is the tenth century optician and physicist Abu Ali al-Hassan ibn al-Hassan ibn al-Haytham‚ simply known as al-Haytham‚ who invented the pinhole camera and discovered how the eye works. The ancient Greeks thought our eyes emitted
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FREE SPACE OPTICS NEXT GENERATION COMMUNICATION PRESENTED BY V.LAXMANA VENKATA KUMAR 09PA1A04B6 ABSTRACT: FSO may sound new and experimental but in fact it predates optical fiber and has its roots in wartime efforts to develop secure communication systems that did not require
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POLARIZATION TOPICS POLARIZATION OF ELECTROMAGNETIC WAVES POLARIZING SHEETS POLARIZATION BY REFLECTION DOUBLE REFRACTION CIRCULAR POLARIZATION POLARIZATION BY SCATTERING Text Book: PHYSICS VOL 2 by Halliday‚ Resnick and Krane (5th Edition) MIT-MANIPAL BE-PHYSICS-POLARIZATION-2011-12 1 POLARIZATION OF ELECTROMAGNETIC WAVES • By convention‚ we define the direction of polarization of the wave to be the direction of the electric vector. • The plane determined by electric
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Optic Nerve The optic nerve is located in the back of the eye and is also called second cranial nerve and cranial nerve II. the optic nerve is to transfer visual information from the retina to teh vision centres of the brain via electrical impulses. It is made up of ganglionic cells or nerve cells and consists of more than 1 million nerve fibres . Our blind spot is caused by the absence of specialised photosensitive/light-sensitive cells or photoreceptors; the part of the retina where the optic
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transparent fluids. APPARATUS REQUIRED: Drawing board White sheets of paper Hollow prism Different liquids(water‚ kerosene‚ oil‚ spirit etc.) Drawing pins Pencil Half meter scale Thumb pins Graph papers A protractor INTRODUCTION: In optics‚ a prism is a transparent optical element with flat‚ polished surfaces that refract light. The exact angles between the surfaces depend on the application. The traditional geometrical shape is that of a triangular prism with a triangular base and
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Grade 10 Science Exam Study Note Chemistry – Pg1‚ Biology – Pg11‚ Optics/Light – Pg 20 Chemistry Physical and chemical properties and changes • Physical Properties: Something you can see or observe with your senses o State o Colour o Size o Luster/Shinyness o Smell o Melting/Boiling Points o Solubility o Viscosity o Density • Chemical Properties: Characteristics used in a chemical reaction o Tendency to React o Combustibility o Tendency to Rust • Physical Changes o Easily reversible
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The Telescope (Reflecting) Introduction: The true beauty of the universe cannot be seen by just the naked eye‚ the telescope is controversially the most important optical instrument in history. Telescopes are widely used around the world and come in different shapes‚ sizes and go by a variety of different names. They can be used to detect noise and sound and even be used to study the stars and supernovas but are more commonly used to gain another perspective into space‚ watching planets such
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light entry into the inner eye and brings objects into focus. Light then then passes through the lens which focuses the light on the retina (made of rods and cones). The retina turns light into nerve impulses and sends it to the brain through the optic nerve. 2. Explain static and dynamic equilibrium. 6 points static equilibrium - The special sense which interprets the position of the head when not moving‚ allowing the CNS to maintain stability and posture. These levels are detected by mechanoreceptors
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Physical Networking Unit 7 Assignments Exercise 1 – Fiber Optics Definitions 1. Crosstalk – The coupling or transfer of unwanted signals from one pair within a cable to another pair. 2. Waveguides – A structure that guides electromagnetic waves along their length. The core fiber in an optical-fiber cable is an optical waveguide. 3. FTTH – Fiber-to-the-home 4. Simplex – a. A link that can only carry a signal in one direction. b. A fiber-optic cable or cord carrying a single fiber. Simplex cordage
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