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Waves & Technology
Term | Definition |
---|---|
Wave | A disturbance that transfers energy from place to place |
Energy | The ability to do work |
Amplitude | The maximum distance that the particles of the medium carrying the wave move away from their resting position |
Wavelength | Distance between two corresponding points (crest to crest, trough to trough) |
Frequency | The number of complete waves that pass at a given point in a certain amount of time |
Vibrate | Repeated back-and- forth or up-and- down motion |
Crest | The high point of a wave |
Trough | The low point of the wave |
Resting position | The position in which the wave would sit if there was no disturbance moving through it |
Mechanical waves | Waves that travel through gases, liquids, or solids |
Medium | Material through which a wave travels |
Damping | decrease in amplitude as energy decreases because of friction, air resistance, gravity, etc. |
Speed | How far a wave travels in a given amount of time |
Electromagnetic wave | Waves that transfer electric and magnetic energy through the vacuum of space |
Electromagnetic spectrum | The complete range of electromagnetic waves placed in order of increasing frequency |
Visible Light | Electromagnetic waves that are visible to the human eye |
Opaque | A material that reflects or absorbs all the light that strikes it |
Primary Colors | Three colors that can be used to make any other color; red, yellow, blue |
Primary Colors of Light | Red, Blue, and Green |
Angle of Incidence | The angle at which the light is coming in |
Law of Reflection | The rule that the angle of reflection equals the angle of incidence |
Plane Mirror | A mirror that has silver-colored coating on one side and a reflective side on the other |
Concave Mirror | A mirror with a surface that curves inward |
Convex Mirror | A mirror with a surface that curves outward |
Refract | To bend waves as they enter a new medium at an angle |
Lens | A curved piece of glass or other transparent material that is used to refract light |
Convex Lens | A lens that is thicker in the center than at the edges |
Concave Lens | A lens that is thinner in the center than at the edges |