UNIKL MESTECH ENGLISH WEEK

Group 3Team members :1. Nur atikah Amira binti rani2. Nurfathirah batrisyia binti ahmad faizal3. Nur anis afiqah binti anizam4. Nur hakimah hanim binti halim5. Nadzhatul syahila binti mohammad nadzri

WHAT IS interference ?Wave interferenceoccurs when two waves meet while traveling along the same medium

interference of waves causes the medium to take on a shape, resulting from the net effect of the two individual waves at the particles of the medium.

considered two waves of the same amplitude travelled in different directions along the medium

CONSTRUCTION OF INTERFERENCEConstructive interferenceoccurs at any location along the medium when two interfering waves have a displacement in the same direction.

both waves have an upward displacement; the medium has an upward displacement greater than the displacement of the two interfering waves.

Destructive Interference

Destructive interference occurs at any location along the mediumtwo interfering waves have a displacement in the opposite direction.

PRODUCTION OF STANDING WAVESStanding waves are produced when two identical wave trains travelling in opposite directions interact with one another (undergo Superposition) to produce a so called Standing Wave PatternA standing wave pattern always consists of an alternating pattern of nodes and antinodesThe animation below representing the standing wave is, in fact, an envelope showing that in some areas large motion occur (the antinodes) and it other areas no motion occur (the nodes)

What are Nodes and Antinodes?

Nodes

points in the standing waves where the two waves cancel complete destructive interference created a stationary point.

described as points of no displacement. Anodeis a place of zero amplitude

Antinodes

Points in the standing waves half way between the nodes at which largest amplitude occurs.

These are the points that undergo the maximum displacement during each vibrational cycle of the standing wave.

Anantinodeis a place of maximum amplitude

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