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'Broken Mirror' May Cause Autism
When observing and imitating emotions, children with autism
display virtually no activity in a key part of the brain's
mirror neuron system, according to new imaging research
published in Nature Neuroscience.
The human brain has a matching...
CAUTION!qURA'AN IS NOT JUST A BOOK .....READ TO LEARN THE MIRACLES OF QURA'AN
THE SCIENTIFIC MIRACLES OF THE QUR'AN INTRODUCTION Fourteen centuries ago, God sent down the Qur'an to mankind as a book of guidance. He called upon people to be guided to the truth by adhering to this book. From the day of its revelation to the...
Cyberscience Announces Popular Report Writer and Business Intelligence Solution
Cyberscience Corporation, a leading provider of reporting and
business intelligence (BI) solutions, today announced the
general availability of Enterprise Cyberquery (eCQ) for SSA
Global applications including SSA PRMS, BPCS, Baan, and ERP...
Monkey Ears
Just the other day I was talking to Ziggy, my Helping Hands capuchin monkey, and she looked at me quizzically and said, "Huh? Speak up!" I have been operating under the assumption that her eyesight and hearing was equal to or better than ours. What...
Sir William Crookes and Home
You may have heard about the media coverage of the Wright Brother’s flight and how it took three years before Scientific American stopped trying to debunk it. You may already know about the early 20th Century Patent Office Official who declared...
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The History of the Microscope
The first microscope was created hundreds of years ago. In the passing centuries, microscopes evolved into powerful, precise tools that allow scientists to view tiny objects at a level of detail that seems unreal. There are a wide array of available microscopes, from the compound microscopes commonly found in high school science classrooms to powerful scanning tunneling and electron microscopes used by Nobel Prize winners.
Most historians agree that two Dutchman made the first microscope in 1590. Zaccharias Janssen and his son Hans were two eyeglass makers who experimented with putting multiple lenses together in a tube. They found that objects under the tube were greatly enlarged. Over the next hundred years, scientists Robert Hooke, Anton van Leeuwenhoek, and others further refined the work of the Janssens and used microscopes to examine insects, blood, and other items. Scientists have continued microscopes into the present day. Now, microscopes can show tiny particles that are unseen by the naked eye in extremely exact detail.
Microscopes operate on several principles. Most common microscopes have two different lenses. Viewers look through the ocular lens, also known as the eyepiece. There is another lens, called the objective lens at the end of the ocular lens. The objective
lens is a sphere shaped lens located above the stage of the microscope. People place the object they want to examine on the stage and can adjust the lenses to bring the object into focus. Most microscopes have an adjustment knob for coarse focus and one for fine focus. Many microscopes have several objective lenses with different strengths for users to choose from. The lenses are arranged on a circular platform that can be rotated to have the different lenses put into place under the ocular lens. Microscopes also need a light source of some kind underneath the stage. Most commercial microscopes have a light bulb, but many high-end microscopes use lasers or electrons for illumination.
Microscopes have been used to make countless vital scientific discoveries. They are invaluable tools used in a variety of scientific fields that enable researchers to make discoveries that would be impossible with the naked eye.
About the Author
Microscopes Info provides detailed information about electron, compound, stereo, digital, video, and scanning tunneling microscopes, as well as an explanation of the different parts of a microscope, and more. Microscopes Info is affiliated with Business Plans by Growthink.
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| Science/AAAS | Scientific research, news and career information |
| International weekly science journal, published by the American Association for the Advancement of Science (AAAS). |
| www.sciencemag.org |
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| Science/AAAS | Table of Contents: 1 December 2006; 314 (5804) |
| This Week in Science: Editor summaries of this week's papers. Science 1 December 2006: 1349. ... 2006 American Association for the Advancement of Science. ... |
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| Science.gov : FirstGov for Science - Government Science Portal |
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| ScienceDaily: Your source for the latest research news and science ... |
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| Science News Online |
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| Science in the Yahoo! Directory |
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| Open Directory - Science |
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| BBC - Science & Nature |
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| Science - Wikipedia, the free encyclopedia |
| Sciences versus Science: the plural of the term is often used but is difficult to ... Science education is also a very vibrant field of study and research. ... |
| en.wikipedia.org |
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| Popular Science |
| Monthly magazine about current science and technology. |
| www.popsci.com |
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| Science/AAAS | ScienceNOW: The Latest News Headlines from the ... |
| AAAS web magazine. Some free sample stories, subscription required for full text. |
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| American Association for the Advancement of Science |
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| Science NetLinks: Resources for Teaching Science |
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| www.sciencenetlinks.com |
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| Cool Science for Curious Kids |
| Fun and interactive site to help kids appreciate science. Why are snakes like lizards, and monkeys like moose? Find out here. |
| www.hhmi.org |
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| Welcome to the Science Museum |
| London museum and library of science. Exhibitions cover all areas of science and technology. Includes online exhibits and a learning area. |
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| New Scientist - International News, Ideas, Innovation |
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