Rubi Almanza Writing 116 Professor Kahlert February 27, 2012 THE APPLICATION OF MOTION IN ONE DIMENSION AND WAVES IN THE GROUND- PENETRATING RADAR.

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Presentation transcript:

Rubi Almanza Writing 116 Professor Kahlert February 27, 2012 THE APPLICATION OF MOTION IN ONE DIMENSION AND WAVES IN THE GROUND- PENETRATING RADAR.

PRESENTATION OVERVIEW Review information Motion in one dimension Waves Integration of both concepts Application to the ground-penetrating radar Real-life application

The simplest form of motion. Implies moving in a straight line. Velocity v = d / t MOTION IN ONE DIMENSION

A wave is a disturbance that carries energy through matter or space. It needs a medium to travel. A medium is a substance that has a tendency to return to equilibrium when displaced. It may be a solid, liquid or gas. Its velocity depends on the medium. WAVES

When a wave is moving through a medium and suddenly encounters a different medium, in which it cannot pass through, it will be reflected back. It is similar to a traveling ball hitting a wall. INTEGRATION OF BOTH CONCEPTS

By measuring the time it takes the wave to return to the source and knowing its velocity, we can calculate the distance between the source and the new medium. WHY IS THIS USEFUL?

The ground-penetrating radar (GPR) is a device used to survey the ground and detect the depth of underground structures. It uses electromagnetic waves to find this depth by calculating the distance between the emitting source and the reflective surface. Since the velocity of the electromagnetic waves in the primary medium is known, this distance is calculated by using the formula for velocity in one dimension. APPLICATION TO THE GROUND-PENETRATING RADAR

In the velocity formula we solve for the distance, and find that Distance = velocity * time For the time value we use only half of the time interval calculated for the wave to come back to the source. Why? APPLICATION TO THE GPR

The GRP is used in underground surveys to assess the structure of old bridges. This device allows for the evaluation of the stability and durability of these structures. REAL-LIFE APPLICATION

QUESTIONS?