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# What Do Lasers Go Through

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Contents

## Introduction

In this experiment(What Do Lasers Go Through), we will be passing the red laser light through different materials to check which matter is letting red energy pass through it. Our hypothesis is, that the clearer the material, the more the light energy will pass through it.

## Aim

To determine which kind of material (darker or clearer) lets red laser light pass through it.

## Theory

1. Based on the stimulated emission of electromagnetic radiation, a laser emits light by the process of optical amplification.

2. The red laser light has a wavelength of (630 – 670)nm.

## Requirements

1. Three different red lasers,

2. Different materials such as water, canola oil, steam, ice, olive oil, carbon dioxide etc.

3. An energy detector,

4. Graph.

## Procedure

Step 1: Use three different lasers for the test.

Step 2: Pass this laser light through different materials.

Step 3: Using an energy detector, measure the transmission.

Step 4: Calculate this energy using in beam and out beam measurements.

Step 5: Repeat this experiment several times.

Step 6: Every time I average the data of this experiment.

Step 7: Plot a graph for obtained average data.

## Observation

1. We observed that the materials such as water, steam, and canola oil had very high transmission energy.

2. Materials such as water, olive oil, and ice had much lower transmission energy.

## Result

1. Our hypothesis is correct which says darker material has less transmission energy.

2. The darker liquid like olive oil transmitted less red laser light than the lighter liquid, like canola oil and water.

3. The darker plastic allowed less light to pass through it than clearer plastic and glass.

## Precaution

1. Carefully observe the graph.

2. Each time, average the obtained data.

## Conclusion

This experiment determined whether the red laser light passed through the darker objects or, the clearer ones.

Q.1 What was the aim of your experiment?

ANS. To determine which kind of material (darker or clearer) lets red laser light pass through it.

Q.2 What was your hypothesis for this experiment?

ANS. Our hypothesis was, the clearer the material, the more the light will energy pass through it.

Q.3 Which kind of material lets more light pass through it?

ANS. The clearer ones like canola oil and water let more red laser light pass through it.

Q.4 Which material had lower transmission energy?

ANS. Materials such as water, olive oil, and ice had a much lower transmission energy.

Q.5 Which material had higher transmission energy?

ANS. Materials such as water, steam, and canola oil had very high transmission energy.

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