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Radical Healing
Radical Healing: This title to a book by Rudolph Ballentine deserves more thought than we might give it. The book deserves more thought than I will give it too. It might be of interest to note that Dr. Ballentine is a Duke graduate and likely...
Superultramodern Problems ( SPro )
The Most Challenging (Unsolved) Problems in Superultramodern Science (SS) 1. What are Superhuman Thoughts ? ( How to Understand Them ? ) 2. How to Modulate the Central NSTPs ? In particular, how to change the values of the parameters in the...
The future of the Human Species - Part 4: Will we create our future?
Experiments have shown that human physiology becomes very weak in an unknown environment to the brain. Humans then start to panic. Problem is that humans do not necessarily want to show their uncertainty. So they hide it. When they actually hide...
Why Venus Flytraps Make Lousy Science Fair Projects
Every year, I receive many phone calls from parents wanting to purchase Venus Flytraps for their kids' science project. I ask them what type of experiment that they are doing, and usually it is about what type of food source will keep the traps...
WILL A PLAGUE DESTROY THE WORLD?
Title: WILL A PLAGUE DESTROY THE WORLD? Author: Arthur Zulu Contact Author: mailto: controversialwriter@yahoo.com Copyright: Copyright © Arthur Zulu 2002 Word Count: 452 Web Address: http://www.1stbooks.com/bookview/10975 Publishing Guidelines:...
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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 | 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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