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Definition
| The maximum displacement of a particle on a wave. For a transverse wave, it is the distance from the peak to the equilibrium. |
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Definition
| The centre of mass of a body is the point at which all of it's mass is assumed to act. At this point, a single force on the body has no turning effect. |
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| Coherant light source (2) |
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Definition
| Constant phase difference and the same frequency/wavelength |
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Definition
| A pair of equal and opposite forces that do not act upon the same line. The moment of a couple can be defined as torque. |
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Definition
| The angle at which the incident angle must exceed for TIR to occur |
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Definition
| The property of a solid that allows it to regain it's shape after deformation |
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Definition
| Number of wave cycles that pass a point per second, measured in Hz |
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Term
| Fundamental mode of vibration |
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Definition
| The pattern of a stationary wave on a string when it vibrates at it's lowest possible frequency |
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Definition
| Force is directly proportional to extension up to the limit of proportionality |
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Definition
| Formation of points of cancellation and reinforcement when two coherant waves pass through one another (IN OPPOSITE DIRECTIONS) |
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Definition
| The limit beyond which, when a wire or spring is stretched, its extension is no longer proportional to the force applied to it |
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Definition
| A wave where the oscillation of the waves particles are parallel to the propagation of the wave |
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Term
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Definition
| The moment of a force about a point is defined as the force times the perpendicular distance from the line of action of the force to the point |
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Definition
| The lengthening of a light pulse in a optical fibre as it repeatedly undergoes TIR, causing light to arrive at different times due different distances travelled |
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Definition
| A point on a stationary wave where displacement/amplitude is always 0 |
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Definition
| The time taken for one complete wave cycle to pass |
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Term
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Definition
| The difference in distances from two coherant sources to an interferance fringe |
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Term
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Definition
| Transverse waves that only vibrate in 1 plane |
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Term
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Definition
| Deformation of a solid beyond it's elastic limit |
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Term
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Definition
| For an object to remain stationary (or in equilibrium), the sum of all forces (upward and downward) must be zero, and clockwise moments must equal anticlockwise moments |
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Term
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Definition
| A change in the speed of a wave when it strikes a boundary at an angle, and changes medium |
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Term
| Examples of scalar quantities |
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Definition
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Term
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Definition
| A wave formed when two coherent waves travelling in opposing directions interfere to produce a stationary wave, which transmits no energy and contains varied amplitudes |
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Term
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Definition
| A light ray that travels from a more optically dense (refractive) index to a less optically dense (refractive index), and must have an angle of incidence greater than the critical angle |
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Definition
| Energy required to break a solid |
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Term
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Definition
Momentum
Velocity
Accellaration
Displacement
Force |
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Term
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Definition
| The least distance between two adjacent vibrating paricles of the same amplitude and velocity (Ie distance between 2 peaks) |
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Term
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Definition
| Parallel bright and dark fringes observed when light goes through a double slit arrangement |
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Term
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Definition
| A single slit followed by two slits, causing interferance and Bright-dark fringes that remain constant |
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Term
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Definition
| Light and dark fringes observed when light passes through one slit, decreasing in intensity as you increase distance from the central maximum |
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