English

Journal Entry 1

Transverse Waves

In a transverse wave the particle displacement is perpendicular to the direction of wave propagation.The animation below shows a one-dimentional transverse plane wave propagating from left to right.The particles do not move alongwith the wave; they simply oscillate up and down about their individual equillibrium position as the wave passes by, pick a single particle and watch its motion. A wave is a disturbance that moves along a medium from one end to another. If one watches an ocean wave moving along a medium (the ocean water), one can observe.It's wave that is vibrating at right angles to the direction of its propagation. I chossed this project because i love things that has to do with water.Also because its interesting learning about waves and specially Tranverse wave.

1. Materials

2. Wave Motion Demonstrator

3. Sine Wave Generator

4. String Vibrator

5. Rod Stand (2)

6. Mechanical Wave Driver

7. Elastic Cord

Journal Entry 2

Safety and Maintenance

Be careful not to use too great of an amplitude or frequency to create waves as they damage the wave motion demonstrator and the string vibrator. In this project we have to demonstrate our knowledge and how we work in the project by our self's. Designs and implement investigations procedures, including making observations, asking well defined questions. We are have to use critical thinking, scientific reasoning, and problem solving. We have to communicate and make journal articles and describe what the project is about.

Journal Entry 3

Demonstrate the theory of superposition: the amplitudes of two transverse waves are additive when the two waves occupy the same area of a medium at the same time, and that the resultant amplitude of two identical waves encountering each other will equal twice the original amplitude when the waves are in phase, and zero when the waves are out of phase by π. Show that a transverse wave is reflected from any boundary, and that the reflected wave experiences zero phase shift when the boundary is free to move, and a phase shift of π when the boundary is fixed. Demonstrate that the speed of a wave traveling through a medium is dependent on the composition of the medium, and is independent of the wave's amplitude.

Journal 4

A transverse wave is a wave or pulse in which the displacement of a medium (due to the wave or pulse) is perpendicular to the direction in which the wave is traveling through the medium. An example of a transverse wave is an ocean wave: the water on the ocean's surface oscillates upward and downward as the wave rolls (travels), but the direction in which the wave is travelling is toward the beach, perpendicular to the upward and downward motion. The speed at which a transverse wave or pulse travels is dependent on the medium through which it is travelling, and is not affected by wave amplitude. Transverse waves or pulses travelling through a medium with higher density will have a slower speed than a transverse wave travelling through a medium with low density.

Journal 5

When two transverse waves or pulses encounter each other in the same medium, interference occurs between them. This interference is characterized by the additive behavior of the amplitudes of each individual wave within the medium. A combined wave will form as the two individual waves pass through each other spatially; its amplitude will equal the sum of the two individual waves. This principle is known as “superposition” and is extensible to any multitude of waves or pulses occupying the same space within a medium.The superposition of waves will show a resultant wave with areas of larger and smaller amplitude than its component waves, depending on which portions of the component waves are interfering. These areas of larger and smaller amplitude are the result of two specific types of interference known as constructive and destructive interference, which occur when waves or pulses encounter each other in phase or out of phase. A combined amplitude that is maximum (constructive interference) is the result of the component waves being exactly in phase, and a combined amplitude of zero (destructive interference) is the result of the component waves being out of phase by π.

Constructive and destructive interference occurring between two continuous waves can give rise to a combined waveform know as a standing wave. In a standing wave, two waves with identical wavelength in the same medium, traveling in opposite directions, interfere in such a way that what appears to be a stationary waveform is generated. Points of maximum amplitude, known as antinodes, and points of zero amplitude, known as nodes, are formed as the component waves travel past each other in and out of phase, continuously producing constructive and destructive interference.