Term
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Definition
| DISTANCE A PARTICLE IN A PARTICULAR MEDIUM IS FROM ITS EQUILIBRIUM POSITION (x) |
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Term
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Definition
| MAXIMUM DISPLACEMENT FROM EQM. POSITION (A) |
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Term
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Definition
| TIME TAKEN FOR A PARTICLE TO MAKE ONE COMPLETE OSCILLATION - OR - TIME IT TAKES FOR ON COMPLETE WAVE TO PASS A FIXED POINT (T) |
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Term
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Definition
| THE AMOUNT BY WHICH TWO OSCILLATING PARTICLES OR WAVES ARE OUT OF STEP. (PHI) |
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Term
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Definition
| NUMBER OF VIBRATIONS PER SECOND OF A PARTICULAR PARTICLE - OR - NUMBER OF WAVES PASSING A FIXED POINT PER SECOND (f IN Hz) |
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Term
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Definition
| MINIMUM DISTANCE BETWEEN TWO PARTICLES THAT ARE OSCILLATING IN PHASE - OR - DISTANCE BETWEEN A POINT ON THE WAVE AND THE SAME CORRESPONDING POINT ON THE NEXT SUCCESSIVE WAVE. |
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Term
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Definition
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Term
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Definition
| PARTICLES VIBRATE PARALLEL TO THE DIRECTION OF PROPAGATION |
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Term
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Definition
| PARTICLES VIBRATE PERPENDICULAR TO THE DIRECTION OF PROPAGATION |
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Term
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Definition
| WHEN TWO OR MORE WAVES OVERLAP AT A POINT, THE RESULTANT DISPLACEMENT IS THE VECTOR SUM OF THE DISPLACEMENTS OF THE ORIGINAL WAVES. |
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Term
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Definition
| ALL PARTICLES ARE OSCILLATING IN THE SAME PLANE(OR FOR EM THE FIELDS DON'T ALTER THEIR PLANE OF OSCILLATION) |
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Term
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Definition
| WAVES ARE COHERENT IF THEY HAVE A CONSTANT PHASE RELATTIONSHIP |
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Term
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Definition
| WAVES FROM TWO SOURCES MEET AT ONE POINT HAVING TRAVELLED DIFFERENT DISTANCES |
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Term
| Constructive interference |
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Definition
| WAVES MEET WITH A PATH DIFFERENCE OF ZERO OR n x lambda (n=INTEGER) WVES ARE IN PHASE AND RESULT IN MAXIMA |
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Term
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Definition
| AN ODD NUMBER OF HALF WAVELENGTHS RESULTS IN ANNULMENT (MINIMAS) |
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Term
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Definition
| TWO PROGRESSIVE WAVES OF THE SAME FREQUENCY, VELOCITY AND SIMILAR AMPLITUDE PASS OVER ONE ANOTHER IN OPPOSITE DIRECTIONS. |
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Term
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Definition
| POINT ON A STANDING WAVE WITH NO AMPLITUDE (DISTANCE BETWEEN NODES = 1/2 WAVELENGTH) |
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Term
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Definition
| POINT AT WHICH A STANDING WAVE OSCILLATES WITH MAXIMUM AMPLITUDE |
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Term
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Definition
| SPREADING OF WAVES INTO THE GEOMETRIC SHADOW WHEN PASSING THROUGH A SLIT (OR OBSTACLE) WHOS SIZE IS COMPARABLE TO THE WAVELENGTH. |
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Term
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Definition
| INTENSITY OF PLANE POLARISED LIGHT PASSING THROUGH A POLARISING FILTER IS PROPORTIONAL TO cos^2 ANGLE OF ROTATION OF THE FILTER RELATIVE TO THE PLANE OF POLARISATION. |
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Term
| Fundamental Mode of Vibration |
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Definition
| THE LOWEST FREQUENCY IN A HARMONIC SERIES WHERE A STATIONARY WAVE IS FORMED. |
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Term
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Definition
| WHOLE NUMBER MULTIPLES OF THE FUNDAMENTAL FREQUENCY OF A STANDING WAVE. |
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