Flashcards
Physics definitions.
Flashcards do conjunto (30)
- 1LightIs a form of energy belonging to the electromagnetic spectrum.
- 2ParallaxIs the difference in the apparent position of an object viewed along two different lines of sight.
- 3StereopsisVisual information taken from both eyes with the brain processing both images to enhance depth perception.
- 4Parallax errore.g. reading a speedometer whilst moving head from side to side.
- 5Normal.Perpendicular line drawn at point of incidence of light.
- 6Incident raylight ray coming into the mirror
- 7Reflected rayLight ray leaving the mirror.
- 8Plane2D surface.
- 9Luminous source.Light source which generates it's own light e.g. glowstick/sun/lightbulb
- 10Non-luminous sourceLight source which reflects of another source e.g. Book/shirt/floor
- 11Real imageAn image caused by the actual intersection of light rays.
- 12Virtual imagean image caused by the apparent intersection of light rays
- 13Curved mirrorsAre part of the surface of a spherical mirror.
- 14ConcaveInside of sphere
- 15ConvexOutside of sphere
- 16InertiaThe measure of the body's ability to resist change in velocity. (Being thrown forward when a moving car stops)
- 17ScalarsMeasurements with magnitude but no direction. (Speed/length)
- 18Vectorsmeasurements with magnitude and direction (Velocity/Momentum)
- 19LeverA lever is a ridged body to rotate about a fixed point called a fulcrum (Door)
- 20HydrometerDevice for measuring density.
- 21WaveA wave is a transfer of energy without the net movement of the medium.
- 22A standing/stationary wave.A wave that doesn't transfer energy and the amplitude is a constant.
- 23Wavelength (Lambda)The distance between two consecutive peaks/troughs.
- 24FrequencyNumber of oscillations per second.
- 25Reflection.Bouncing of a wave off an object.
- 26RefractionWaves refract when moving from one medium to another.
- 27Diffractionthe spreading of waves as they pass through gaps or around the edge of obstacles.
- 28Doppler effectThe apparent change in frequency due to the relative motion of a sound source and observer.
- 29PolarisationWhen transverse waves in one plane can be blocked by a filter (3D movies)
- 30ResonanceThe natural transfer of energy between two bodies with the same natural frequency.