Objectives

May As humans, our environment consistently exposes us to a variety of dangers. Tornadoes, lightning, flooding and hurricanes can all hamper our survival. Not to mention the fact that most of us can encounter swerving cars or ill-intentioned people at any given moment. Biofilms form when bacteria adhere to surfaces in aqueous environments and begin to excrete a slimy, glue-like substance that can anchor them to all kinds of material Thousands of years ago, humans realized that they could better survive a dangerous world if they formed into communities, particularly communities consisting of people with different talents. Working together in this manner requires communication and cooperation. Inhabitants of a community live in close proximity and create various forms of shelter in order to protect themselves from external threats. We build houses that protect our families and larger buildings that protect the entire community. Grouping together inside places of shelter is a logical way to enhance survival. With the above in mind, it should come as no surprise that the pathogens we harbor are seldom found as single entities. Because by doing so, they are better able to combat the cells of our immune system bent upon destroying them.

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Charles Grenier Production Manager: Leiser This entire episode is viewable on YouTube in three parts: The panel must try to explain everyday natural phenomena in a way the kids can understand. Why does the moon have different shapes?

Kyowa x A Kyowa x40 achromatic objective – tube length mm with a numerical aperture of The lens optically is in very good condition but there is a little tarnish in the final bezel of the mount.

There are a few marks on the side of the barrel but the optical performance is not affected. Standard RMS screw thread. Numerical aperture of 0. Numerical aperture of 1. Becoming a very rare objective these days SOLD Meiji x10 The Japanese microscope manufacturer Meiji have now positioned themselves to be competition for Olympus and Nikon and rightly so.

This is a semi- plan, DIN standard objective with a numerical aperture of 0. A collectors piece but also a good lens. PL APO objectives — the class for professionals. They deliver imaging quality that cannot be achieved by conventional objectives. Plan Apochromats provide perfect axial and lateral color matching for applications requiring fast color change and the colocalization of structures. PL APO objectives are characterized by flawless image flatness up to a field number of

‘PHYSICIAN’S MICROSCOPE’:

Zeiss Antique Brass Microscope This is a fine antique monocular brass microscope in its original case dating from approximately It has no makers name but there are features that attest to its quality. The brass is in good condition for its age. The microscope has two objectives each with its own brass objective pot and ine eyepiece.

The stage has a slide holder and very unusually has a dissection plate assembly with tether points that can be attached to the microscope stage. Condition very good taking into account their obvious age.

Biofilms form when bacteria adhere to surfaces in aqueous environments and begin to excrete a slimy, glue-like substance that can anchor them to all kinds of material.

Lenses like this do not become available every day. This is a brass finished Beck 4mm Apochromatic objective with a numerical aperture of 0. Standard RMS screw thread and in very good condition. American Optical x10 Price: A relatively rare American made lens in good condition. Infinity corrected with a numerical aperture of 0. This is a Beck 2mm oil immersion objective in good condition. Brass and black with standard RMS screw thread.

Olympus Fluorescence Target Price: In excellent condition this is a set of hardly used Leica M25 screw thread objectives. Infinity corrected C Plan 0. A Prior x10 objective for mm tube length and with a numerical aperture of 0. Gillett and Sibert x Price:

Chapter 6 – A New Diagnostic Paradigm

This is a manuscript of the 3rd edition, a work in progress sponsored by the US National Science Foundation. The first edition was published by Third Millenium Books, Novato, California, in and as noted below, copyright was reassigned to the author upon breakup of that company. As to conditions for use, Dr. Grosch says “make sure it’s as generous as possible. The only restriction I really want is, no alterations, or elisions which change [my] intentions. The only cautions for viewing, other than sheer size, are the presence of several tables, which browsers such as Lynx might not format correctly, and the fact that it contains a fair number of words in German, French, and other languages containing accented characters, coded in ISO Latin Alphabet 1, properly announced.

Bouverie, Louisa Mary Yeames – – Louisa was born in Deptford, Kent, on 13 June (click here for her baptism record from St Paul, Deptford, Lewisham) and was the only daughter and youngest child of Richard Gowlland (click here for his biography) and Louisa Mary, née Yeames. She married Charles Bouverie on 28 July at St Bride’s, Fleet Street, London (click here for the.

Zeiss Antique Brass Microscope This is a fine antique monocular brass microscope in its original case dating from approximately It has no makers name but there are features that attest to its quality. The brass is in good condition for its age. The microscope has two objectives each with its own brass objective pot and ine eyepiece.

The stage has a slide holder and very unusually has a dissection plate assembly with tether points that can be attached to the microscope stage. Condition very good taking into account their obvious age. It is rare to find these units that have all the accessory filters still in place. The mirror does show its age but without pickling or loss of mirroring.

These drawing attachments depend upon a balance of lighting between the illuminated specimen down the microscope and the light available for the drawing paper hence the range of neutral density filters in the box which can be used to balance the two. Original case in good condition, a real collectors item. This particular instrument has been well looked after and the original wooden case has been sympathetically restored to a good finish. This is a students microscope with a cut away stage to allow larger specimen study at that time.

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When no price is shown, use button to request the price. Click on photos for larger images. Navy submarine pins and sleeve badges. All are of highest quality and of American manufacture. It contains two sections. Good condition showing actual use and minor wear.

Henna for Hair Tips and Usage I have used henna to colour my hair for a long time. I especially love it in the summers, as it is very cooling.

A bridge to an age when craftsmanship was as important as functionality, a vintage microscope is a work of art as well as science. The First Microscopes In the late 16th century several Dutch lens makers designed devices that magnified objects, but in Galileo Galilei perfected the first device known as a microscope. His invention, a compound microscope, had a convex and a concave lens.

Later that century, Anton van Leeuwenhoek refined the microscope for biological research. These first fledgling microscopes were generally built and used by a scientist. They can only be found in museums and are not available to the average antique microscope collector. Usually made of brass, the first microscopes were monocular instruments with simple lenses. For further history reading feel free to follow our link on the History of the Microscope.

Zeiss Microscopes The German lens maker, Carl Zeiss, excelled at crafting precision lenses and began manufacturing microscopes in Initially building single lens instruments, in his firm began designing compound microscopes. Made of brass, many of these instruments had a black japanned base. His later microscopes used a draw-tube coarse focus and a knob controlled fine focus.

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This happened so long ago that the records do not definitively disclose who invented the instrument. Hans and Zaccharias Jansen have been given the credit by some historians, but the bulk of the evidence does NOT support this claim. What we do know is that compound microscopes existed in the ‘s and that in Galileo Galilei was using a compound microscope.

The RCA Corporation was a major American electronics company, which was founded as the Radio Corporation of America in It was initially a wholly owned subsidiary of General Electric (GE); however, in , GE was required to divest its control as part of the settlement of a government antitrust suit.. At its height as an independent company, RCA was the dominant communications firm in.

Bausch and Henry Lomb. Both men settled in Rochester, New York and began constructing eyeglasses before forming an official partnership and founding the Vulcanite Optical Instrument Company in to produce frames for glasses and magnifiers from hard rubber. By the late s, Bausch’s son Edward had joined the team and the company added microscopes to the growing product lineup. Gundlach designed a full product line of microscopes and patented a variety of stands and accessories before leaving the company in Providing versatility through an almost unlimited number of positions, the KAJ microscope offers a modicum of comfort via paired eyepieces that may be adjusted to suit the observer.

In addition, the Greenough-style microscope forms an erect, apparently three-dimensional image of the specimen. Each body tube is fitted with an achromatic objective, a Huygenian eyepiece, and a Porro prism. Unlike more modern binocular microscope designs based on beamsplitters, these Greenough microscopes produce erect, three-dimensional images that are, however, inverted by degrees. Wright from the Carnegie Institution of Washington, D.

The AKW-5 model illustrated in this section, redrawn from photographs of the original microscope, features extremely wide fields, long working distances, parfocal objectives, high eye points, stereoscopic vision, and an erect image that is not reversed. Inspired by the basic Greenough design, this instrument, which was dubbed the StereoZoom, was the first commercial stereomicroscope devoid of erecting prisms.

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Understanding Biofilms

The telescope, complete with the original wood packing crates for the optical tube assembly and German Mount Head, arrived on 18 August from a collector in Belgium. After nearly four weeks of work we completed our illustrated article explaining these telescopes, and now this 4 inch telescope joins our other Unitron telescopes at our on-line virtual museum. The article Unitron Model – 4. Click on image to see enlarged view 64, bytes In time we hope to add some optional accessories for the 4 inch telescope including the Unitron mechanical clock drive, a weight-driven motor based on the mechanics of a clock but geared to rotate the telescope Right Ascension axis about once every 24 hours.

We already have some offers of help to add some other hard-to-find accessories for this telescope, these will be acquired over time for our exhibits.

CTS Polarising Microscope. This is a relatively rare Cooke Troughton and Sims polarising microscope that is now a collectors piece. Serial number M with provenance card and original manual together with its original case that is in excellent condition for its age.

Establishment by General Electric[ edit ] Company logo in stressed its leadership in international communication. In , the Wireless Telegraph and Signal Company, Limited, was founded in London to promote the radio then known as “wireless telegraphy” inventions of Guglielmo Marconi. As part of a worldwide expansion, in American Marconi was organized as a subsidiary company, holding the rights to use the Marconi patents in the United States and Cuba. With the entry of the United States into World War One in April , the government took over most civilian radio stations, to use them for the war effort.

Although the overall U. Defying instructions to the contrary, the Navy began purchasing large numbers of stations outright. With the conclusion of the conflict, Congress turned down the Navy’s efforts to have peacetime control of the radio industry, and instructed the Navy to make plans to return the commercial stations it controlled, including the ones it had improperly purchased, to the original owners.

Understanding Biofilms

Winifred and Alice entered the home in January The birth certificate of Alice Maud daughter has been obtained — click here. So far it has not proved possible to locate the other three birth certificates, although attempts continue.

PREFACE to first edition. THIS BOOK was to be an autobiography. I was made into a computer fifty years ago. I was the second scientist ever hired by IBM, and I watched the Watsons on Olympus, and Bill Norris and Ken Olsen and Gene Amdahl, and a thousand great commercial and academic figures.

The earlier models were frequently given names. The purpose of this essay is to describe the evolution of one of these models, the top of the line, the Professional model. An example of one of these instruments is shown in figure 1. The serial number, which is stamped onto the bottom of the case, is The microscope is constructed largely of brass and measures about 17 inches tall as shown in the photograph. Rising from the novel and oddly shaped base are two turned pillars that support the body of the microscope.

Tension for the inclination of the microscope can be adjusted using brass knobs located on either side of the axis of inclination.

Microscope Tutorial by Rachel Chagniot