13857675
Description
Flashcards by Ebony Hogan , updated more than 1 year ago
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Created by Ebony Hogan
over 6 years ago
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| Question | Answer |
| Light | Is a form of energy belonging to the electromagnetic spectrum. |
| Parallax | Is the difference in the apparent position of an object viewed along two different lines of sight. |
| Stereopsis | Visual information taken from both eyes with the brain processing both images to enhance depth perception. |
| Parallax error | e.g. reading a speedometer whilst moving head from side to side. |
| Normal. | Perpendicular line drawn at point of incidence of light. |
| Incident ray | light ray coming into the mirror |
| Reflected ray | Light ray leaving the mirror. |
| Plane | 2D surface. |
| Luminous source. | Light source which generates it's own light e.g. glowstick/sun/lightbulb |
| Non-luminous source | Light source which reflects of another source e.g. Book/shirt/floor |
| Real image | An image caused by the actual intersection of light rays. |
| Virtual image | an image caused by the apparent intersection of light rays |
| Curved mirrors | Are part of the surface of a spherical mirror. |
| Concave | Inside of sphere |
| Convex | Outside of sphere |
| Inertia | The measure of the body's ability to resist change in velocity. (Being thrown forward when a moving car stops) |
| Scalars | Measurements with magnitude but no direction. (Speed/length) |
| Vectors | measurements with magnitude and direction (Velocity/Momentum) |
| Lever | A lever is a ridged body to rotate about a fixed point called a fulcrum (Door) |
| Hydrometer | Device for measuring density. |
| Wave | A wave is a transfer of energy without the net movement of the medium. |
| A standing/stationary wave. | A wave that doesn't transfer energy and the amplitude is a constant. |
| Wavelength (Lambda) | The distance between two consecutive peaks/troughs. |
| Frequency | Number of oscillations per second. |
| Reflection. | Bouncing of a wave off an object. |
| Refraction | Waves refract when moving from one medium to another. |
| Diffraction | the spreading of waves as they pass through gaps or around the edge of obstacles. |
| Doppler effect | The apparent change in frequency due to the relative motion of a sound source and observer. |
| Polarisation | When transverse waves in one plane can be blocked by a filter (3D movies) |
| Resonance | The natural transfer of energy between two bodies with the same natural frequency. |
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