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Fire Walkers #2
They stood in two rows before the altar, and beating time with the jingles of the staffs and batons in their right hands, chanted, ensemble, the 'hridaya' sutra. This finished, they went and settled on the seats prepared for them at the two sides...
How the Meter Came To Be
One can know where one is in the world by the systems of
measurement that specific place uses. There is the English
system used by the United States, which uses pounds and feet for
measurement, and then there is the metric system which is...
Plastic Fantastic- Recycling of Plastic into steel making
PLASTIC FANTASTIC Engineers at the University of N.S.W have come up with a way to reuse plastic waste to produce steel. •In Australia, every year over 1,000,000 tonnes of plastic is put into landfill. •Only 10% of total waste plastic is ever...
Shamanism
Is it really possible that Don Juan could command the movement of Carlos' attention point or time reference point to another dimension that he calls the Nagual and the sorcerer’s perspective? Can the adeptness of one person rise to know you better...
The New Jersey Devil and The Mothman
Joseph Bonaparte and The New Jersey Devil: “Commodore Stephen Decatur was an American naval hero in the early nineteenth century. According to legend, he visited the Hanover Mill Works to inspect his cannonballs being forged. While there, he...
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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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