Why Use Products Made From Recycled Materials

There are literally thousands of products that can be and are made from recycled materials. Things such as paper, glass products, even some plastic products are collected by people who are conscientious enough to put items into recyclable bins, melted down or broken down in some fashion so they can be used again, and then is used to again. So why should we use recycled materials for our products?

One good reason is because it’s already been proven that these materials are recyclable. The first time items are recycled, sometimes certain things have to be removed from those products so that the rest of what’s left can be used to create new products. When new products are created from recycled materials, those product makers are very careful in making sure that they don’t add anything to the new product that might be bad for the environment. Therefore, these items can pretty much be recycled over and over again quite easily.

Another reason to use these products made from recycled materials is because you know that these products are about as green as you can get. Sure, recycled paper may not retain that same pristine quality that new paper does, but still a viable option for many paper products such as greeting cards and paper bags for carrying groceries. You can feel good that you’re doing your part in helping to protect the environment.

One final reason for using recycled materials is that, in some cases, they can create unique designs and patterns that can be created any other way, at least on an easily. For instance, tabletops, counters, and even flooring that are made from recycled materials has some unique styles that are endemic to recycled materials. They also help in protecting your home because they’re not made with any extra chemicals, therefore you can be sure that your family will not be ingesting any poisons are noxious fumes. One complaint you sometimes hear is that products made from recycled materials cost too much. In this case, how would you measure the cost of protecting your family’s health?

What Is A Wavefront Lasik Procedure Like?

Let’s walk through what a client experiences when attending a Lasik center for a Wavefront Lasik procedure. The procedure itself generally only takes between five and ten minutes for each eye in total, and both eyes are done during the same procedure. The actual time to reshape the eye with the Lasik excimer laser is usually less than 15 seconds per eye.

Any person’s vision problems are generated by small “aberrations” within the eye that prevents the light from focusing objects as they should. The Lasik equipment locates and classifies these aberrations and then processes them so that the Lasik physician will correct these and allow the light to focus properly once the eye has healed.

In a Wavefront Lasik procedure, the patient stares at one point while a light is sent into the eye, which is reflected back and read by a Lasik Wavefront sensor. The distortions in this reflected light are mapped using a small computer within the Lasik system, and then this information is used to guide the laser that treats the eye.
Once the light creates the map for the eye, the Lasik surgeon has to create a small flap to access the cornea. This is done using a laser (this type of Lasik procedure is known as IntraLasik, or bladeless Lasik) or a small blade known as a microkeratome.

This flap is then opened to allow the cornea to be reshaped by the Lasik excimer laser actually reshapes the cornea, which is the crucial part of the Lasik procedure. In order to determine exactly how to reshape it, the map created earlier by the Wavefront sensor is used to direct the beam of light accurately. The Lasik physician uses these precise tools to get the clearest vision results possible.

This custom Lasik procedure can not only correct such standard problems as nearsightedness, but can also address aberrations that create light halos, glare, haze, or starburst patterns. Once the Lasik physician determines that all relevant aberrations have been eliminated, he replaces the flap in its proper position, where it adheres normally and will heal naturally.

As mentioned earlier, this entire Lasik process takes between ten and fifteen minutes per eye. A patient gets a mild sedative and eye numbing drops to make the procedure both relaxing and painless. Most people notice an improvement in vision due to Lasik almost immediately.

Once the Lasik procedure is finished, you will get some eye drop medication to lubricate and protect your eyes. This medication (and the liquid in the drops themselves) may cause some blurring, and so for this reason (and to avoid any eyestrain) you should arrange for someone else to drive you home. It is also a good idea to go to sleep as soon as possible after the Lasik operation in order to promote even faster healing.

To promote optimal healing the Lasik physician often gives a plastic shield to wear over your eyes for the first night or two. Follow closely any recommendations by the Lasik physician. Do further investigation into this great new Lasik procedure, and get a clearer focus on your future!

Science Fair Project Ideas – Part 2

This article is a sequel to Science Fair Project Ideas ? Part 1 but can be read and used independently. Both articles are designed to provide project ideas. The hardest part of a science fair project may very likely be getting started. Once you have an idea in mind it is easy to formulate what experiments and research you will need to do. Until you chose a topic you do not have anything to aim toward. The science fair project is typically designed as an educational tool. This article is not designed to hand you an idea for a project. My goal is that these ideas will point you in the right direction or even give inspiration for another related idea. The three descriptions here will give you an outline, not a project; it is your job to expand on a project idea.

Idea number one: The effect of earthquakes on building structures. The main focus of this idea is to show how lateral ground movement affects the structure of a building. Some answers will only be found through research, specifically on ?inertia?. The experiment suggested here will require a large piece of rough sand paper and at least one Slinky toy (two are needed for a second idea). The set up for this experiment is simple. Place the Slinky on the sandpaper (rough side up). Then pull on the sandpaper to move it about six inches. You should observe that the top half of the Slinky leans backward then catches back up to bottom half once the sand paper stops moving. While an actual building is much more solid than a Slinky, the walls will still bend, since the force of an earthquake is much greater than that of pulling on the sand paper. This experiment can be taken to a second phase. Pull on the sandpaper just as before but in a back and forth motion. Notice how the top of the Slinky reacts to the change in direction. Another variation for this idea is to connect two Slinky toys together and repeat the experiment. The taller Slinky combo will replicate a taller building and you can observe if the height of a building has an effect on the impact of the lateral movement.

Idea number two: How is static electricity is produced. The main focus of this idea is to see how static electricity effects various objects. Some research key words will be ?static charge?, ?protons? and ?electrons?. Your study here will involve the placement, or displacement of electrons. The basic experiment of this idea will require a balloon, string, tape and a hair dryer. Blow up a balloon, tie a string around the bottom (the knot) and tape the other end of the string to a ledge like a table or shelf so that the balloon can hang freely. After washing your hands, rub one rapidly in a back and forth motion across one side of the balloon. Now, allow the balloon to hand freely again. Move your hand close to the balloon without touching it. The balloon should move toward your hand. A great variation for this experiment requires you to add two elements. Mark and ?x? on the balloon where you will rub. Then, get the balloon to spin slowly before placing your hand up to it. This will show that the excess charge is in the location you rubbed. Another fun trick is to turn a faucet on so a very small stream of water is flowing. Comb your hair with a standard comb then hold it up to the stream of water. The water will actually bend away from the comb.

Idea number three: How does a first class lever work? The main focus of this idea is to build a first-class lever and to examine its advantage. Some key terms for this idea that you will need to research are ?fulcrum?, ?effort force?, ?effort arm? and ?load arm?. In this experiment you will need to build a simple lever. Use a broom, table and a chair it you like. Place the broom handle under the edge of the table and across the back of the chair. You should be able to easily lift the table by pushing down on the brush end of the broom if you have your fulcrum (the chair) in the right spot. You can change the experiment by placing the fulcrum under the broom in different spots. Try placing the chair close the table, then close to the brush end of the broom, then in the middle. Compare the amount of effort needed in each location. Another experiment idea is the classic teeter-totter (see-saw). Using two volunteers of different weight, place one on each end of the teeter-totter then experiment by changing placement of the volunteers. What locations work best? How does moving the lighter person toward the center of the teeter-totter affect the lifting abilities? How about moving the heavier person?

These three additional science fair project ideas may give you a good place to start on your project. Please be sure to research each idea extensively and even create your own variations of the experiments. It is likely that more ideas will be presented in future articles.