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INTERFERENCE by Mind Map: INTERFERENCE

1. Definition

1.1. meeting of two or more waves along the same medium

1.1.1. it causes the medium to take on a shape that results from the net effect of the two individual wave

1.2. phenomenon in which two waves superpose to for a resultant wave pf greater, lower, or equal to the amplitude

2. Thomas Young

2.1. Discoveries

2.1.1. cause of Astigmatism

2.1.2. power of accommodation of the eye

2.1.3. how the receptors in the eye perceive color

2.2. Biography

2.2.1. June 14, 1773 - May 10,1829

2.2.2. English scientist, Researcher, Physician, Physicist, and Polymath

2.2.3. known as "Phenomenon Young"

2.2.4. coined the term "ENERGY" at his Lectures on Natural Philosphy

2.3. Experiment

2.3.1. Double-Slit Experriment

2.3.1.1. it is based one the premise that if light is a wave

2.3.1.2. monochromatic light is allowed to pass through single slit to produce coherent light

2.3.1.3. possible result

2.3.1.3.1. Particle interpretation

2.3.1.3.2. Wave interpretation

2.3.2. Formula

2.3.2.1. Bright Fringes: d sin(θk) = k λ

2.3.2.2. Dark Fringes: d sin(θk) = (k + 1/2) λ

3. Types

3.1. Constructive Interference

3.1.1. occurs at any location along the medium where the two interfering waves have a displacement in the same direction

3.1.2. result is reinforced wave of amplitude = sum of the amplitudes of the two waves

3.2. Destructive Interference

3.2.1. occurs at any location along the medium where the two interfering waves have a displacement in the opposite direction

3.2.2. the resultant wave has lesser amplitude = to difference of the amplitudes of the individual

4. obeys the "principle of superposition"

4.1. two or more waves interfere, the resultant wave is the sum of the individual waves

5. also called as "wave propagation"