Where’s the sense of a love of learning? You sound like the kind of teacher that I wanted my children away from in brick and mortar.

Shouldn’t the mother’s enthusiasm for homeschool and a supportive learning environment be an emphasis here, rather than this negative emphasis, which unfortunately overshadows your valuable suggestions.

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author’s comments:

You have made a fair point. YES…. we are homeschooling because traditional schools have failed us. And YES, we need NOT to copy the mistakes of traditional schools. I stilll believe however that discipline can be “taught” in the context of homeschool without the errors common in traditional schooling. Thanks for the fair criticism. -mr

By Aurora Lipper

This article teaches kids about lasers and gives a handful of totally fun (and safe) experiments to do with them. It is great for teaching homeschool science. It’s also good for boy scouts working on a badge, or for any kids that love science experiments. These experiments are part of a homeschool science program that I teach, so I promise your kids will love it.

The word “LASER” stands for Light Amplification by Stimulated Emission of Radiation. A laser is an optical light source that emits a concentrated beam of photons. Lasers are usually monochromatic – the light that shoots out is usually one wavelength and color, and is in a narrow beam.

By contrast, light from a regular incandescent light bulb covers the entire spectrum as well as scatters all over the room. (Which is good, because could you light up a room with a narrow beam of light?)

There are about a hundred different types of atoms in the entire universe, and they are always vibrating, moving, and rotating. Think of kids on sugar. When you add energy to these atoms (even more sugar to the kids), they really get excited and bounce all over the place.

When the atoms relax back down to their “normal” state, they emit a photon (a light particle). Think of the kids as coming down from their sugar high, and they all collapse on the couch.

A laser controls the way energized atoms release photons. Imagine giving half the kids sugar, and picture how they would bounce all over the place (like light from a bulb)when it took effect. They would be very high-energy among the other half who were contently sitting down.

Now imagine those sugar kids jumping in unison (a focused laser beam). The sugar-kids are infectious, and pretty soon, the kids around them are joining in and sharing in their excited energy. This is how a laser charges the atoms inside the gas medium.

Now imagine a cat-flap that lets out a limited number of kids out at a time, while the rest are bouncing around inside, charging up everyone. That cat-flap exit is the laser beam exiting the laser. The atoms remaining inside the laser bounce off mirrors as they charge each other up.

Before we start, you’ll need eye protection – tinted UV ski goggles are great to use, as are large-framed sunglasses, but understand that these methods of eye protection will not protect your eyes from a direct beam. They are intended as a general safety precaution against laser beam scatter and spinning mirrors. (Yes, you will be wearing sunglasses in the dark!)

A very neat addition to the experiments below is a fog machine. (Rent one from your local party supply store.) Turn it on, be sure you have good ventilation, darken the lights, and turn on the lasers for an outstanding laser experience! If you are teaching homeschool science to a group of kids, this can be especially fun with them all shining lasers at the same time.

A quick note about lasers: keychain lasers from the dollar store work just fine with these projects. Do not use green lasers – they are too dangerous for the eyes.

Plastic Bottle Beam Fill up a plastic water or clean soda bottle with water and add a sprinkle of cornstarch. Turn down the lights and turn up the laser, aiming the beam through the bottle. Do you see the original beam in the bottle? Can you find the reflection beam and the pass-through beam?

Light Bulb Laser In the dark, aim your laser at a frosted incandescent light bulb. The bulb will glow and have several internal reflections! What other types of light bulbs work well?

CDs Shine your beam over the surface of an old CD or DVD. Does it work better with a scratched or smoother surface? You should see between 5-13 reflections off the surface of the CD, depending on where you shine it and how good your “seeing” conditions are.

Glass and Crystal Pass the laser beam through several cut-crystal objects such as wine glasses or clear glass vases. Is there a difference between clear plastic or glass, smooth or multi-faceted? Try an ice cube, both frosted and wet.

Microscope Slides Shine the laser beam through a flat piece of glass, such as a microscope slide or single-paned window. Can you find the pass-through beam as well as a reflected beam?

If you have it, fill a clear tank with water, add a sprinkling of cornstarch, and put the slide underwater. Shine the laser through the side wall through the slide and both beams will be visible.

Lenses If you have an old pair of eyeglasses, pop out the lenses and try one or both in the beam to see the various effects. Try one lens, and then try two in line with each other to see if you can change the beam.

Filters Paint a piece of cellophane or stiff clear plastic with nail polish (or use colored filers) to put in the laser beam. You can make a quick diffraction grating by using a feather in the beam.

If you have polarizer filters, use two. You can substitute two sunglass lenses – no need to pop out the lenses – you can just use two pairs of sunglasses. Just make sure they are polarized lenses (most UV sunglasses are). Place both lenses in the beam and rotate one 90 degrees. The lenses should block the light completely in one configuration and allow it to pass-through the other way.

Laser Maze Hot glue one 1″ mosaic mirror (found at most craft stores) to each wooden cube. In a pinch, you can use aluminum foil or Mylar. Add a fog source, such as a fog machine, dry ice, or clap two (very chalky) chalkboard erasers together – just be sure to have proper ventilation, as you will also need the room to be very dark. Turn on the laser adjust the cubes to aim the beam onto the next mirror.

As a teacher, homeschool science teacher, engineer and university instructor Aurora Lipper has been helping kids learn science for over a decade.

Want More Cool Homeschool Science Experiments and Activities?

Rocket-launch your kid’s education by downloading your FREE copy of the Homeschool Science Experiment Activity Guide from the Supercharged Science website: http://www.SuperchargedScience.com

Our school was probably one of the more successful examples of a charter school in Texas, with a mission of reaching out primarily to drop-outs and students who, for various reasons, were not eligible to enroll in public schools. With the facilities we had, the equipment we were given, the curriculum materials, and the overcrowding of the classrooms to squeeze every dollar out of the state, I’m amazed that we accomplished anything at all.

BTW, I enjoy this blog, and I’ve linked it on my blogroll at http://kingdomeducation.wordpress.com
Come and visit!

Thanks for commenting. It sounds like you have an excellent homeschool support group. I really like that idea of helping those in need as an entire homeschool group. Your children must be learning so much. Families receive so many benefits from homeschooling.

What a great article! Thanks for commenting on my site–I left you a comment there, but in case you don’t check–I’ve been homeschooling for 2 years. This will be my 3rd year this fall. It is amazing how fast my children have progressed…it really is a blessing in disguise, no matter how much its been ridiculed.

Thanks for sharing this article. Do you mind if I reference it on my blog? It really was inspiring to me. We always hear the bad about homeschooling, but this just shows how good it is. Our homeschool support group helps with a food shelter for homeless. Your kids have to be in 3rd grade and all are expected to help, so I haven’t been able to do it yet. My daughter is in 3rd this upcoming year. Anyway, I think its a great way for homeschoolers to show their true colors and in such a positive light.

God bless!

I appreciate your stopping by my blog recently. I like yours, too, and am bookmarking it so I can check back in often!