 | | LCD Projectors-a Technological BoonLCD projectors give a new dimension to images. Whether it is the correct positioning or ensuring the correct visibility, there is probably no better option than LCD projectors when it comes to making an image more scalable.
Scaling happens to be an important criterion that determines the perfection of an image. It may be defined as the process of converting an input image into its native output. To be explicit, the format of resolution varies widely from one LCD projector to another. If you are using a computer with SVGA resolution and plug it with a XGA projector, the projected image is bound to loose its luster and sharpness. This error can be overcome if your projector has high capacity to scale images correctly. Nevertheless, it is always advisable to maintain a resolution that is in conformity with the resolution of our computer. That would help the projected image from getting blurred.
It is not only the resolution of you computer but the purpose of your presentation that should be considered while fixing the resolution of your LCD projector. If you are demonstrating some PowerPoint presentation, the SVGA resolution LCD projector would work fine. But if it happens to be some numeric data in excel sheet or if you are illustrating some detailed graphic of highly technical nature, you should better go for an XGA format.
There are certain other features you should put a checklist while buying an LCD projector the most important being keystone correction. If a projector is not placed at the central position, chances are that the image would be distorted. The keystone correction feature helps in overcoming this fallacy and ensures correct positioning of the images.
Your projector should ideally have loop-through. This feature lets you attach the projector to other devices like the monitor. This helps you view the projected image in the computer screen itself without having to turn back to the audience every time you project an image.
One of the most important advantages is that projectors are highly portable which makes it quite convenient to use. The standard LCD projector weight prevailing in the market is five pounds and even lighter projectors are available. One should particularly ensure that the projector you buy should have the feature of ceiling mounting as an additional option. This particular feature enables you to reverse the projected image and is particularly useful for illustrating charts and diagrams.
The usage of LCD projectors has gained momentum over a period of time. High end digital projectors are now widely used in offices, home theaters. Modern lightweight LCD projectors can be connected with computers, video players as well as other media devices. It is a great instrument that fosters communication and is definitely an impetus towards further development of the society. |
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| The Hundred-Year Lie: How to Protect Yourself from the Chemicals That Are Destroying Your Health
by Randall Fitzgerald |  | In the tradition of Silent Spring and Fast Food Nation, investigative journalist Randall Fitzgerald warns how thousands of man-made chemicals in our food, water, medicine, and environment are making humans the most polluted species on the planet. A century ago in 1906, when Congress enacted the Pure Food and Drug Act, Americans were promised "better living through chemistry." Fitzgerald provides overwhelming evidence to shatter this myth, and many others perpetrated by the chemical, pharmaceutical, and processed foods industries.
Plume (June 26, 2007)
Product Dimensions: 8.4 x 5.2 x 0.7 inches
Paperback: 304 pages | Consider This:- The average American carries a "body burden" of 700 synthetic chemicals
- Chemicals in tap water can cause reproductive abnormalities and hermaphroditic birth
- A 2005 study of lactating women in eighteen U.S. states found perchlorate (a toxic component of rocket fuel) in practically every mother's breast milk
- Lab tests have found that four common food additives-aspartame, MSG, and two coloring chemicals-interact synergistically to produce nerve damage. These additives are commonly found in junk food marketed to children.
- In the past few decades male sperm counts fell by 50 percent, women's tubal pregnancies increased by 400 percent, and girls eight years old and younger began experiencing puberty. Chemicals are redefining what is "normal"
| Editorial Review:
In 1906, Congress passed the US Food and Drug Act and, according to the author, this has led to the "Hundred-Year Lie" that our food and drugs have been investigated and are safe and that the additives and chemicals put in them may actually make them better than the organic, natural variety. As an investigative reporter, Fitzgerald is expert at using scientific documents, articles in science and environmental journals and expert interviews to support his case. He concludes that we cannot rely on the government, science or manufacturers to either protect us or predict the effects of the products we ingest. As a test, Fitzgerald had his own blood analyzed for toxins and, in spite of living in an area of California known for its pure water and air and careful eating habits, he was shocked to find many toxic chemicals in his blood. While many readers will not agree with his conclusion that "Merely by choosing a diet of pure foods and a lifestyle free of synthetics, we can detoxify ourselves and initiate the healing of many degenerative illnesses and diseases," this book will cause any reader to think about the effect of our own voluntary actions on the health of our bodies. His suggestions for practical steps one can take may prove useful as well, although in the paperback afterword, he fears that denial will prevent most people or governments from taking any significant action.
Reviewer: Nola Theiss (Vol. 42, No. 1) |
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