INTRODUCTION TO LASERS

Blake Stancil and Parker Allison

What We had To Do Research uses of lasers. Learn about the laser kit and safety precautions. Build a basic laser and record the power of it in a video. Create a security perimeter using the lasers and mirrors. Make real life connections of having lasers as a security

perimeter. Research the Law Of Conservation of energy. Demonstrate how sound can be sent across lasers in a video

that explains the forms of energy the lasers convert in the process of transferring noise.

Make a flow chart to explain the forms of energy that the laser converts from electrical energy then goes through different forms as it shoots sound across the laser.

Make this PowerPoint.

RESEARCH

Uses of Lasers Lasers are used in the medical field for things such as

cutting skin very accurately, getting skin back together, post cardiac surgery treatments, as well as many other important uses.

Lasers are used to cut certain types of material. Lasers are used to scan barcodes when you are checking

out. Lasers read CDs and other types of discs. Lasers are used to copy things and print them out on the

printer. Lasers can be used to get down to temperatures as low as

10-9 K. Lasers are used for very accurate measurements of

something. Another way we use lasers today are for tattoo removal.

Uses of Lasers

Lasers are used to apply sealants at the dentist office.

Uses of Lasers In Construction

Lasers can be used to seal pipes or cut material accurately that most things could not cut.

THE LASER KIT

These were the first pictures that we took. These were all In the first box that we took out. The uses parts are labeled above.

The mirrors and security system were used for

the laser security perimeter.

The auxiliary cord was used for the laser

security perimeter and transferring sound over a

laser.

These are the stands and the power

cord to give everything electricity.

This is the laser.

This is the photometer

receiver

You Can Use Lasers Safely in the Classroom By:

Wearing glasses that protect your eyes from the laser beam.

Using a sign that represents the use lasers.

Use an area where the laser won’t effect other people.

Close the door so that the laser doesn’t effect anyone else's eyes

A Basic Laser

This laser had the power of 9.49nm

USING LASERS FOR SECURITY

A Laser Security Perimeter

Real World Applications Of Using Lasers For Security

Lasers are used for security purposes as detecting extra movement in a house.

They can detect the movement and be programmed to turn on a video camera when that happens.

The lasers are used to detect when their beam is broken.

LAWS OF LASERS

Law of Conservation Of Energy

Energy can not be created or destroyed but it can be transformed.

The total amount of energy in a system remains constant.

When we use energy, it is being changed from one form to another.

Forms of EnergyKinetic Energy An example of kinetic

energy is when a ball is flying through the air it has kinetic energy because of its motion and it could have an effect on something if it hits it.

Potential Energy An object is considered to

have potential energy if it can be moved or it moves and its energy can accelerate, for example the ball in the last example before the game in which it is thrown.

Forms of EnergyThermal/Heat Energy A cup of hot chocolate has

thermal energy because of the molecules moving around in the hot chocolate that are vibrating and moving. They have both kinetic and potential energy because of this so they have thermal energy.

Chemical Energy The blood sugar or

glucose in our bodies has chemical energy because the glucose releases energy when it is chemically reacted with oxygen. Chemical energy is a form of microscopic potential energy.

Forms of EnergySound Energy Sound waves are made up of

both potential and kinetic energy in the form of air molecules. For example when you hit a drum it makes the air nearby compressed, giving it potential energy then the air expands to give it kinetic energy, therefore making sound waves.

Electrochemical Energy Electrochemical

energy is combined chemical energy and electricity. An example would be a battery.

SENDING SOUND ACROSS A LASER

Sending Sound Across Lasers

The laser has kinetic energy when the laser

beam is in motion.

The laser has potential energy before the laser sends a beam across to

final surface.

A laser has thermal energy when it first

shoots across because it has to heat up to send a

beam.

The laser has Electrical energy when the

electricity from the wall and converts the energy into sending the laser.

A laser has electromagnetic energy when the

light from the laser beam

shoots across.

The laser has sound energy when it is taking the music from a phone and sends it across the laser to the photometer

and the photometer plays the music.

What We Learned We learned how to safely use lasers in the

classroom. We learned how to make a basic laser, laser

security perimeter, and how to send sound across a laser.

We learned about the laws of conservation of energy.

We learned about different forms of energy. We learned about different things that lasers

are used for.

How we collaborated

We each worked on the lasers. We took turns working on our

PowerPoint. We switched off taking pictures and

videos. We took turns doing our blog.

Sources

http://hyperphysics.phy-astr.gsu.edu/hbase/optmod/lasapp.html#c1

http://www.energyeducation.tx.gov/energy/section_1/topics/law_of_conservation/

http://www.nmsea.org/Curriculum/Primer/forms_of_energy.htm

THE END

Any Questions?