2221362
Description
Flashcards by Courtney Sampson, updated more than 1 year ago
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Created by Courtney Sampson
over 9 years ago
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| Question | Answer |
| Medium | Any physical substance in which energy can be transferred ( air , water ) |
| Radiation | a method of energy transfer that does not require a medium. Example: neon lights |
| Electromagnetic Waves | a wave that has both electric and magnetic waves parts. Does not require a medium, travels at the speed of light |
| Speed of Light | = 3.00 x 10^8 m/s |
| Light Ray | a line on a diagram representing the direction and path that the light is travelling |
| Geometric Optics | The use of light rays to determine how light behaves when it strikes an object |
| Incident Light | light emitted from a source that strikes an object |
| Transparent | a material that transmits all incident light |
| Translucent | a material that transmits some incident light and refracts or absorbs the rest |
| Opaque | a material that does not transmit any incident light but absorbs or reflects all light |
| image | reproduction of an object through the use of light |
| mirror | any polished surface reflecting an image |
| Reflection | the bouncing back of light from a source / surface |
| plane mirror | flat mirror |
| incident ray | the incoming ray that strikes a surface |
| reflected ray | the ray that bounces off a reflective surface |
| Normal | the perpendicular line to the mirror surface |
| Perpendicular | at right angles |
| Angle of incidence | the angle between the incident ray and the normal |
| Angle of reflection | the angle between the reflected ray and the normal |
| specular reflection | reflection of light off a smooth surface |
| diffuse reflection | reflection of light off irregular or dull surfaces |
| virtual image | an image coming from an apparent light source. light is not bouncing off or coming from the image location |
| optic center | the point at the exact center of the lens |
| principle focus | the point on the principle axis where the light rays converge |
| luminous | can be seen because they produce their own light ex: the sun, a light bulb |
| Non luminous | can be seen because they reflect light ex: the moon, paper |
| what is the significance of Sir Isaac Newton? | Sir Isaac Newton was the first person to separate white light into the visible spectrum |
| what is the order of the colours in the visible spectrum | Red Orange Yellow Green Blue Indigo Viloet |
| What are the 2 laws of reflection | 1) the angle of icidence equals the angle of reflection 2) the incident ray, the normal, and the reflected ray all line in the same plane |
| How can you locate an image in a concave mirror if : the object is beyond C? *Draw Diagram* | The image will be : L : between C and F O : inverted S : smaller T : Real |
| How can you locate an image in a concave mirror if : the object is located at C? *Draw Diagram* | The image will be L: at C O: inverted S: same size T: real |
| How can you locate an image in a concave mirror if : the object is located in front of C *Draw Diagram* | The image will be L: beyond C O: inverted S: larger T: real |
| How can you locate an image in a concave mirror if : the object is in front of F *Draw Diagram* | the image will be: L: behind the mirror O: upright S: larger T: virtual |
| How is light produced by: incandescence | the production of light from a high temperature. Example : Candle |
| How is light produced by: Electric Discharge | the production of light by passing an electric current through a gas |
| How is light produced by: phosphorescence | the production of light as a result of the absorption of high energy ultra violet rays resulting in the emission of low energy visible light over an extended period of time. Example : Glow in the dark toys |
| How is light produced by: Flourescence | The immediate emission of light as a result of the absorption of ultra violet light Example : Fluorescent light |
| How is light produced by: Chemiluminescence | The production of light as a result of a chemical reaction with little to no heat produced. Example: Glow sticks |
| How is light produced by: Bioluminescence | The production of light in organisms as a result of a chemical reaction with little or no heat produced. Example: Firefly |
| How is light produced by: Triboluminescence | the production of light as a result of scratching crushing or rubbing certain crystals. Example: striking 2 sugar cubes |
| How is light produced by: LED's | (Light Emitting Diodes) produce light as a result of an electric current flpwing through semi conductors |
| How is light produced by: LASER's | ( Light Amplification by Stimulated Emission of Radiation) produce EM waves of exactly the same energy level |
| Draw a diagram of an actual mirror and a scientific mirror | ... |
| draw a diagram of reflected rays in a plane mirror | ... |
| what does LOST stand for? | Location Orientation Size Type |
| What does C,F,V stand for | Center of curvature Focal point Vertex |
| how do you locate an image in a convex mirror? | the image will be : L : behind the mirror O: upright S: smaller T: virtual |
| what is the equation for the index of refraction? | N= C/V |
| how can you rearrange the index of refraction formula to find the speed of light in a medium? | V= C/N |
| what does NCV stand for (index of refraction terms) | N= index of refraction C= speed of light in a vacuum V= Speed of light n a medium |
| what are 3 characteristic of converging lenses? + Draw a diagram | 1) thickest in the middle 2) used to correct far farsightedness 3) makes light rays converge |
| what are 3 characteristics of diverging lenses? + draw a diagram | 1) thinnest in the middle 2) used to correct nearsightedness 3) causes light rays to diverge |
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