Se afișează postările cu eticheta glass. Afișați toate postările
Se afișează postările cu eticheta glass. Afișați toate postările

6/22/2011

history of mirrors


The history of mirrors starts in the III Century B.C. Most ancient mirrors were made from metal and had a round shape. The back side of the ancient mirrors was beautifully embellished with ornamentation. Mirrors were made from highly polished bronze and silver. The first glass mirrors were invented in I Century by Romans.
From ancient times special qualities had been given to mirrors, that no other object had. The Greek philosopher Socrates gave advice to young men to look at themselves in the mirror, and those who were handsome should focus their life on keeping their souls clean and stay away from the temptations of life that could take them on the wrong path. If a young man would find that he is not handsome, he should compensate for his look from his heart, and get known for doing a lot of good things.
In Medieval period glass mirrors completely disappeared, because during those times religious confessions stated that devil is looking and watching the world from the opposite side of a glass mirrors. Poor fashionable ladies had to use a polished metal mirrors or special water bowls instead of glass mirrors.
Glass mirrors came back only in 13th century. This time they were bended slightly outward. The method of attaching tin to the flat surface of the glass wasn't invented yet. Using available technology master glaziers poured hot tin into glass tubs, and then, after the tin was cold, they would brake it into separate pieces. Only three centuries later Venetian masters invented a "flat mirror technique". They figured out how to attach tin to a flat glass surface. Venetian masters invented another trick. They created a special reflective mixture in which gold and bronze was added. Because of this "magical" mixture all objects reflecting in the mirrors looked much more beautiful than in reality. The cost of one Venetian mirror then was comparable to the cost of the large naval ship.
In a city of Nuremberg (Germany) in 1373 the first mirror manufacturing plant was open. Mirrors were then aggressively integrated in all aspects of life. In the 16th century mirrors become a part of mysterious rituals and witchcraft. Also, for 200 years mirrors were used by Spanish and French spies for coding and decoding secret messages. This secret coding system was introduced in 15th century by Leonardo da Vinci. The scriptures were coded in "mirror reflection" and without the mirror it was impossible to read the message. Mirrors were part of another big invention of the time - the periscope. The opportunity to discreetly spy on ones enemy by using a system of interactive mirrors saved a lot of lives during wars. During the famous Thirty Year war, mirrors were used by all sides to blind the enemy during military actions with bright reflection of sun light. It was very hard to take aim when your eyes are blinded by thousands of tiny mirrors.
Starting with 12th century no respectful lady left her house without a small mirror. Handheld mirrors and pears mirrors became a must have items for every woman. Ladies wore gold embellished mirrors on a chain around their neck or waist, inserted mirrors in to the fens. Mirrors were treated just like precious jewelry, and were incased in specially crafted exotic materials like turtle shell or elephant bone frames. Some of the mirror's frames were made from gold or silver with an elegant miniature engravings.
In the 15th century the Venetian Island of Murano become the center of glass making and was known as the "Isle of Glass". They officially created the "Council of Ten" with a special mission of vigorously protecting the secrets of there glass making techniques. Masters glassmakers were secretly transported to the island of Murano undercover as a firefighters. The "Council of Ten" generously supported glassmakers and at the same time kept them isolated from the rest of the world. The profits from the mirror making monopoly were too large to take any risks. European monarchs at whatever it cost tried to find out the Venetian glassmaking secrets. They accomplish this goal in 17th century, when Colbert (the minister of Ludwig XIV) bribed with gold three Murano masters and transported them in to France.
The French happened to be a good students, and very quickly they not only mastered Murano glass making techniques, but invented they're own. While mirror making techniques used by Venetian masters was based on a glassblowing, French masters started manufacturing mirrors using casting techniques based on pouring glass into the cast molds. The glass was poured directly from the dome into perfectly smooth surface of the cast mold, and then, as the glass was cooling, it was rolled with the special rollers achieving a perfect consistency and smoothness of material. Immediately after this invention, in Versailles the construction of the Mirrors Gallery began. The Mirrors Gallery was 220 feet (73 meters) long and embellished with 306 huge mirrors.
On the end of 16th century, following the high fusion style, French queen Maria De Medici decided to create for herself a Mirrored office. For this matter, 119 mirrors was purchased from Venice. Maybe because her purchase was so large, or for some other reason, Venetian masters created a special gift for the queen of France - a unique large mirror generously incrusted with precious stones. Till this day this mirror is preserved and kept in the Louvre in Paris.
Mirrors become a popular valuable collectibles among royals. English King Hendry VIII and the King of France Francis I were the most known mirrors collectors of there time. Trying to catch up with kings, nobles in France had to have an extravagant mirrors in any cost. There is a knowing facts that some of them had to sell one of they residents in order to purchase a single beautiful mirror. Mirrors were extremely costly. For example one mirror cost more than an Rafael's painting of the same size.
In 17th century Russia, mirrors were considered a sin. In 1666 the Orthodox Church in prohibited the possession of mirrors by its priests. From this time on a lot of superstitions surrounded mirrors. Those superstitions seems to us funny and naive, but back than people took it very seriously. Breaking a mirror, for example, was sign of bad lack for seven years. That is why when a mirror was broken the person who broke it should apologies to the mirror for clumsiness, and had to carefully and respectfully bury it. Solders took mirrors-talismans to reflect away death.
Mirrors have had a long and colorful journey throughout history. In our days there is no home without a mirror. Mirrors have become part of our everyday routine, often unappreciated. We always should remember "reflect" and respect the historical aspects of mirrors and appreciate more not only mirror's functionality, but incredible esthetical value of the mirrors

history of glass


The discovery of glass
Natural glass has existed since the beginnings of time, formed when certain types of rocks melt as a result of high-temperature phenomena such as volcanic eruptions, lightning strikes or the impact of meteorites, and then cool and solidify rapidly. Stone-age man is believed to have used cutting tools made of obsidian (a natural glass of volcanic origin also known as hyalopsite, Iceland agate, or mountain mahogany) and tektites (naturally-formed glasses of extraterrestrial or other origin, also referred to as obsidianites).
According to the ancient-Roman historian Pliny (AD 23-79), Phoenician merchants transporting stone actually discovered glass (or rather became aware of its existence accidentally) in the region of Syria around 5000 BC. Pliny tells how the merchants, after landing, rested cooking pots on blocks of nitrate placed by their fire. With the intense heat of the fire, the blocks eventually melted and mixed with the sand of the beach to form an opaque liquid.
This brief history looks, however, at the origins and evolution of man-made glass.
A craft is born
The earliest man-made glass objects, mainly non-transparent glass beads, are thought to date back to around 3500 BC, with finds in Egypt and Eastern Mesopotamia. In the third millennium, in central Mesopotamia, the basic raw materials of glass were being used principally to produce glazes on pots and vases. The discovery may have been coincidental, with calciferous sand finding its way into an overheated kiln and combining with soda to form a coloured glaze on the ceramics. It was then, above all, Phoenician merchants and sailors who spread this new art along the coasts of the Mediterranean.
The oldest fragments of glass vases (evidence of the origins of the hollow glass industry), however, date back to the 16th century BC and were found in Mesopotamia. Hollow glass production was also evolving around this time in Egypt, and there is evidence of other ancient glassmaking activities emerging independently in Mycenae (Greece), China and North Tyrol.
Early hollow glass production
After 1500 BC, Egyptian craftsmen are known to have begun developing a method for producing glass pots by dipping a core mould of compacted sand into molten glass and then turning the mould so that molten glass adhered to it. While still soft, the glass-covered mould could then be rolled on a slab of stone in order to smooth or decorate it. The earliest examples of Egyptian glassware are three vases bearing the name of the Pharaoh Thoutmosis III (1504-1450 BC), who brought glassmakers to Egypt as prisoners following a successful military campaign in Asia.
There is little evidence of further evolution until the 9th century BC, when glassmaking revived in Mesopotamia. Over the following 500 years, glass production centred on Alessandria, from where it is thought to have spread to Italy.
The first glassmaking "manual" dates back to around 650 BC. Instructions on how to make glass are contained in tablets from the library of the Assyrian king Ashurbanipal (669-626 BC).
Starting to blow
A major breakthrough in glassmaking was the discovery of glassblowing some time between 27 BC and AD 14, attributed to Syrian craftsmen from the Sidon-Babylon area. The long thin metal tube used in the blowing process has changed very little since then. In the last century BC, the ancient Romans then began blowing glass inside moulds, greatly increasing the variety of shapes possible for hollow glass items.
The Roman connection
The Romans also did much to spread glassmaking technology. With its conquests, trade relations, road building, and effective political and economical administration, the Roman Empire created the conditions for the flourishing of glassworks across western Europe and the Mediterranean. During the reign of the emperor Augustus, glass objects began to appear throughout Italy, in France, Germany and Switzerland. Roman glass has even been found as far afield as China, shipped there along the silk routes.
It was the Romans who began to use glass for architectural purposes, with the discovery of clear glass (through the introduction of manganese oxide) in Alexandria around AD 100. Cast glass windows, albeit with poor optical qualities, thus began to appear in the most important buildings in Rome and the most luxurious villas of Herculaneum and Pompeii.
With the geographical division of the empires, glass craftsmen began to migrate less, and eastern and western glassware gradually acquired more distinct characteristics. Alexandria remained the most important glassmaking area in the East, producing luxury glass items mainly for export. The world famous Portland Vase is perhaps the finest known example of Alexandrian skills. In Rome's Western empire, the city of Köln in the Rhineland developed as the hub of the glassmaking industry, adopting, however, mainly eastern techniques. Then, the decline of the Roman Empire and culture slowed progress in the field of glassmaking techniques, particularly through the 5th century. Germanic glassware became less ornate, with craftsmen abandoning or not developing the decorating skills they had acquired.
The early Middle Ages
Archaeological excavations on the island of Torcello near Venice, Italy, have unearthed objects from the late 7th and early 8th centuries which bear witness to the transition from ancient to early Middle Ages production of glass.
Towards the year 1000, a significant change in European glassmaking techniques took place. Given the difficulties in importing raw materials, soda glass was gradually replaced by glass made using the potash obtained from the burning of trees. At this point, glass made north of the Alps began to differ from glass made in the Mediterranean area, with Italy, for example, sticking to soda ash as its dominant raw material.
Sheet glass skills
The 11th century also saw the development by German glass craftsmen of a technique - then further developed by Venetian craftsmen in the 13th century - for the production of glass sheets. By blowing a hollow glass sphere and swinging it vertically, gravity would pull the glass into a cylindrical "pod" measuring as much as 3 metres long, with a width of up to 45 cm. While still hot, the ends of the pod were cut off and the resulting cylinder cut lengthways and laid flat. Other types of sheet glass included crown glass (also known as "bullions"), relatively common across western Europe. With this technique, a glass ball was blown and then opened outwards on the opposite side to the pipe. Spinning the semi-molten ball then caused it to flatten and increase in size, but only up to a limited diameter. The panes thus created would then be joined with lead strips and pieced together to create windows. Glazing remained, however, a great luxury up to the late Middle Ages, with royal palaces and churches the most likely buildings to have glass windows. Stained glass windows reached their peak as the Middle Ages drew to a close, with an increasing number of public buildings, inns and the homes of the wealthy fitted with clear or coloured glass decorated with historical scenes and coats of arms.
Venice
In the Middle Ages, the Italian city of Venice assumed its role as the glassmaking centre of the western world. The Venetian merchant fleet ruled the Mediterranean waves and helped supply Venice's glass craftsmen with the technical know-how of their counterparts in Syria, and with the artistic influence of Islam. The importance of the glass industry in Venice can be seen not only in the number of craftsmen at work there (more than 8,000 at one point). A 1271 ordinance, a type of glass sector statute, laid down certain protectionist measures such as a ban on imports of foreign glass and a ban on foreign glassmakers who wished to work in Venice: non-Venetian craftsmen were themselves clearly sufficiently skilled to pose a threat.
Until the end of the 13th century, most glassmaking in Venice took place in the city itself. However, the frequent fires caused by the furnaces led the city authorities, in 1291, to order the transfer of glassmaking to the island of Murano. The measure also made it easier for the city to keep an eye on what was one of its main assets, ensuring that no glassmaking skills or secrets were exported.
In the 14th century, another important Italian glassmaking industry developed at Altare, near Genoa. Its importance lies largely in the fact that it was not subject to the strict statutes of Venice as regards the exporting of glass working skills. Thus, during the 16th century, craftsmen from Altare helped extend the new styles and techniques of Italian glass to other parts of Europe, particularly France.
In the second half of the 15th century, the craftsmen of Murano started using quartz sand and potash made from sea plants to produce particularly pure crystal. By the end of the 16th century, 3,000 of the island's 7,000 inhabitants were involved in some way in the glassmaking industry.
Lead crystal
The development of lead crystal has been attributed to the English glassmaker George Ravenscroft (1618-1681), who patented his new glass in 1674. He had been commissioned to find a substitute for the Venetian crystal produced in Murano and based on pure quartz sand and potash. By using higher proportions of lead oxide instead of potash, he succeeded in producing a brilliant glass with a high refractive index which was very well suited for deep cutting and engraving.
Advances from France
In 1688, in France, a new process was developed for the production of plate glass, principally for use in mirrors, whose optical qualities had, until then, left much to be desired. The molten glass was poured onto a special table and rolled out flat. After cooling, the plate glass was ground on large round tables by means of rotating cast iron discs and increasingly fine abrasive sands, and then polished using felt disks. The result of this "plate pouring" process was flat glass with good optical transmission qualities. When coated on one side with a reflective, low melting metal, high-quality mirrors could be produced.
France also took steps to promote its own glass industry and attract glass experts from Venice; not an easy move for Venetians keen on exporting their abilities and know-how, given the history of discouragement of such behaviour (at one point, Venetian glass craftsmen faced death threats if they disclosed glassmaking secrets or took their skills abroad). The French court, for its part, placed heavy duties on glass imports and offered Venetian glassmakers a number of incentives: French nationality after eight years and total exemption from taxes, to name just two.
From craft to industry
It was not until the latter stages of the Industrial Revolution, however, that mechanical technology for mass production and in-depth scientific research into the relationship between the composition of glass and its physical qualities began to appear in the industry.
A key figure and one of the forefathers of modern glass research was the German scientist Otto Schott (1851-1935), who used scientific methods to study the effects of numerous chemical elements on the optical and thermal properties of glass. In the field of optical glass, Schott teamed up with Ernst Abbe (1840-1905), a professor at the University of Jena and joint owner of the Carl Zeiss firm, to make significant technological advances. Another major contributor in the evolution towards mass production was Friedrich Siemens, who invented the tank furnace. This rapidly replaced the old pot furnace and allowed the continuous production of far greater quantities of molten glass.
Increasing automation
Towards the end of the 19th century, the American engineer Michael Owens (1859-1923) invented an automatic bottle blowing machine which only arrived in Europe after the turn of the century. Owens was backed financially by E.D.L. Libbey, owner of the Libbey Glass Co. of Toledo, Ohio. By the year 1920, in the United States, there were around 200 automatic Owens Libbey Suction Blow machines operating. In Europe, smaller, more versatile machines from companies like O'Neill, Miller and Lynch were also popular.
Added impetus was given to automatic production processes in 1923 with the development of the gob feeder, which ensured the rapid supply of more consistently sized gobs in bottle production. Soon afterwards, in 1925, IS (individual section) machines were developed. Used in conjunction with the gob feeders, IS machines allowed the simultaneous production of a number of bottles from one piece of equipment. The gob feeder-IS machine combination remains the basis of most automatic glass container production today.
Modern flat glass technology
In the production of flat glass (where, as explained earlier, molten glass had previously been poured onto large tables then rolled flat into "plates", cooled, ground and polished before being turned over and given the same treatment on the other surface), the first real innovation came in 1905 when a Belgian named Fourcault managed to vertically draw a continuous sheet of glass of a consistent width from the tank. Commercial production of sheet glass using the Fourcault process eventually got under way in 1914.
Around the end of the First World War, another Belgian engineer Emil Bicheroux developed a process whereby the molten glass was poured from a pot directly through two rollers. Like the Fourcault method, this resulted in glass with a more even thickness, and made grinding and polishing easier and more economical.
An off-shoot of evolution in flat glass production was the strengthening of glass by means of lamination (inserting a celluloid material layer between two sheets of glass). The process was invented and developed by the French scientist Edouard Benedictus, who patented his new safety glass under the name "Triplex" in 1910.
In America, Colburn developed another method for drawing sheet glass. The process was further improved with the support of the US firm Libbey-Owens and was first used for commercial production in 1917.
The Pittsburgh process, developed by the American Pennvernon and the Pittsburgh Plate Glass Company (PPG), combined and enhanced the main features of the Fourcault and Libbey-Owens processes, and has been in use since 1928.
The float process developed after the Second World War by Britain's Pilkington Brothers Ltd., and introduced in 1959, combined the brilliant finish of sheet glass with the optical qualities of plate glass. Molten glass, when poured across the surface of a bath of molten tin, spreads and flattens before being drawn horizontally in a continuous ribbon into the annealing lehr.
Conclusion
Although this brief history comes to a close nearly 40 years ago, technological evolution naturally continues. Not yet ready to be "relegated" to a history of glass are areas such as computerized control systems, coating techniques, solar control technology and "smart matter", the integration of micro-electronic and mechanical know-how to create glass which is able to "react" to external forces.

history of the eyeglasses


Apparently no visual instruments existed at the time of the ancient Egyptians, Greeks, or Romans. At least this view is supported by a letter written by a prominent Roman about 100 B.C . in which he stressed his resignation to old age and his complaint that he could no longer read for himself, having instead to rely on his slaves. The Roman tragedian Seneca, born in about 4 B.C., is alleged to have read "all the books in Rome" by peering at them through a glass globe of water to produce magnification. Nero used an emerald held up to his eye while he watched gladiators fight. This is not proof that the Romans had any idea about lenses, since it is likely that Nero used the emerald because of its green color, which filtered the sunlight. Ptolemy mentions the general principle of magnification; but the lenses then available were unsuitable for use in precise magnification.
The oldest known lens was found in the ruins of ancient Nineveh and was made of polished rock crystal, an inch and one-half in diameter. Aristophanes in "The Clouds" refers to a glass for burning holes in parchment and also mentions the use of burning glasses for erasing writing from wax tablets. According to Pliny, physicians used them for cauterizing wounds.
Around1000 A. D. the reading stone, what we know as a magnifying glass, was developed. It was a segment of a glass sphere that could be laid against reading material to magnify the letters. It enabled presbyopic monks to read and was probably the first reading aid. The Venetians learned how to produce glass for reading stones, and later they constructed lenses that could be held in a frame in front of the eyes instead of directly on the reading material.
The Chinese are sometimes given credit for developing spectacles about 2000 years ago--but apparently they only used them to protect their eyes from an evil force . In the year 1268, Roger Bacon, the English philosopher, wrote in his Opus Majus: "If anyone examine letters or other minute objects through the medium of crystal or glass or other transparent substance, if it be shaped like the lesser segment of a sphere, with the convex side toward the eye, he will see the letters far better and they will seem larger to him. For this reason such an instrument is useful to all persons and to those with weak eyes for they can see any letter, however small, if magnifier enough". In 1289 in a manuscript entitled Traite de con uite de la famille, di Popozo wrote: "I am so debilita-ted-by age that without the glasses known as spectacles, I would no longer be able to read or write. These have recently been invented for the benefit of poor old people whose sight has become weak". Thus it appears that the first spectacles were made between 1268 and 1289. In 1306 a monk of Pisa delivered a sermon in which he stated: "It is not yet twenty years since the art of making spectacles, one of the most useful arts on earth, was discovered. 1, myself, have seen and conversed with the man who made them first". The name of the true inventor of eyeglasses remains lost in obscurity.
The first known artistic representation of eyeglasses was painted by Tommaso da Modena in 1352. He did a series of frescoes of brothers busily reading or copying manuscripts. one holds a magnifying glass but another has glasses perched on his nose. Once Tommaso had established the precedent, other painters placed spectacles on the noses of all sorts of subjects, probably as a symbol of wisdom and respect. (See Crivelli's painting of St. Peter) From the 14th century, painters also presented portraits of St. Lucy, often carrying her own eyes--they even appeared as lorgnette-like glasses on a stem.
One of the most significant developments in spectacle making in the 16th century was the introduction of concave lenses for the nearsighted. Pope Leo X, who was very shortsighted, wore concave spectacles when hunting and claimed they enabled him to see better than his companions.
The first spectacles had quartz lenses because optical glass had not been developed. The lenses were set into bone, metal or even leather mountings, often shaped like two small magnifying glasses with handles riveted together typically in an inverted V shape that could be balanced on the bridge of the nose. The use of spectacles spread from Italy to the Low Countries, Germany, Spain, and France. In England a Spectacle Makers Company was formed in 1629; its coat of arms showed three pairs of spectacles and a motto: "A blessing to the aged".
From the moment they were invented, glasses posed a problem that wasn't solved for almost 350 years: how to keep them on! For all its developmental changes over the years, the spectacle frame is one of technology's best examples of poor engineering design. It virtually teems with defects. The center of gravity and center of rotation are too far forward to keep the lenses in optimal position. Frames depend far too much upon noses, which vary in size, shape and firmness, and upon ears, which vary in symmetry, in contour of cartilagenous support, and in the amount of hair interposed between frame and ear. They require that the lens plane be perpendicular to the visual axis, yet this is geometrically possible for only one direction of gaze--all other directions will induce changes in spherical and cylindrical power.
They require that the optical center of each lens be supported directly in front of the center of each pupil, but this is manifestly impossible since the eyes are constantly moving, altering in version and vergence.
Spanish spectacle makers of the 17th century experimented with ribbons of silk that could be attached to the frames and then looped over the ears. Spanish and Italian missionaries carried the new models to spectacle wearers in China. The Chinese attached little ceramic or metal weights to the strings instead of making loops. In 1730 a London optician named Edward Scarlett perfected the use of rigid sidepieces that rested atop the ears. This perfection rapidly spread to the continent.
In 1752 James Ayscough advertised his latest invention--spectacles with double hinged side pieces. These became extremely popular and appear more often than any other kind in paintings, prints, and caricatures of the period. Lenses were made of tinted glass as well as clear.Ayscough felt that white glass ligives an offensive glaringlight, very prejudicial to the eyes, and on that account, green and blue glasses have been advised...". In Spain in 1763 Pablo Minguet recommended turquoise, green, or yellow lenses but not amber or red.
European men and women, particularly the French, were self-conscious about wearing glasses. Parisian aristocrats used reading aids only in private. The gentry of England and France used a "perspective glassig or monocular which could be hidden from view easily. In Spain, however, spectacles were popular among all classes because people thought glasses made them look more important and dignified.
Far-sighted or aging colonial Americans imported spectacles from Europe. Spectacles were mainly for the affluent and literate colonists, who required a valuable and treasured appliance. Glasses cost as much as $200 in the early 1700's. The Boston Evening Post of 1756 carried an advertisement: "Just imported in the Scow Two Brothers, Cpt Marsden, from London and to be sold by Hannah Breintnall at the Sign of the Spectacles, in Second-Street near Black-Horse-Alley". Francis McAllister opened his store in Philadelphia in 1783 with "a bushel basketfull" of spectacles, through which presumably his customers could pick and choose.
Benjamen Franklin in the 1780's developed the bifocal. Later he wrote, "I therefore had formerly two pairs of spectacles, which I shifted occasionally, as in traveling I sometimes read, and often wanted to regard the prospects. Finding this change troublesome, and not always suffficiently ready, I had the glasses cut and a half of each kind associated in the same circle. By this means, as I wear my own spectacles constantly, I have only to move my eyes up or down, as I want to see distinctly far or near, the proper glasses being always ready." Evidently the idea of bifocals had already been experimented with in London as early as 1760 (possibly by Franklin himself, who was there at the time) though never used extensively.
Bifocals progressed little in the first half of the 19th century. The terms bifocal and trifocal were introduced in London by John Isaac Hawkins, whose trifocals were patented in 1827. In 1884 B. M. Hanna was granted patents on two forms of bifocals which become commercially standardized as the "cemented" and "perfection" bifocals. Both had the serious faults of ugly appearance, fragility, and dirt-collection at the dividing line. At the end of the 19th century the two sections of the lens were fused instead of cemented, an idea originated by de Wecker in Paris and patented in 1908 by Borsch. At the turn of the 20th century, there was a considerable increase in the use of bifocals.
Between 1781 and 1789 silver spectacles with sliding extension temples were being made in France; a pair owned by Franklin is dated 1788. But it was not until the nineteenth century that they gained widespread popularity. John McAllister of Philadelphia began manufacturing spectacles with sliding temples containing looped ends which afforded much easier manipulation with the then-popular wigs. The loop supplemented the inadequacy of stability by affording a means for the addition of a cord or ribbon which could be tied behind the head, thus holding the spectacles more firmly in place.
In 1826, William Beecher came to Southbridge, Massachusetts from Connecticut to establish a jewelry-optical manufacturing shop. The first ophthalmic articles he produced were silver spectacles which were later followed by blue steel. In 1869 the American optical Company was incorporated and absorbed the holding of William Beecher. In 1849 J. J. Bausch emigrated to the United States from Germany. He had already served an apprenticeship as an optician in his native land and had found work in Berne. His compensation for the labor on a complete pair of spectacles was equal to six cents. Mr. Bausch encountered difficult times in America from 1849 until 1861, at which time war broke out. When the war prevented importation of frames, demand for his hard rubber frames zoomed. Continuous expansion followed and the large Bausch and Lomb Company was formed.
The monocle, which was first called an "eye ring", was introduced in England about 1800; although it had been developed by a German during the 1700's. A young Austrian named J. F. Voigtlander (same family as the camera people) studied optics in London and took the monocle idea home with him. He started making monocles in Vienna about 1814 and the fashion spread and took particularly vigorous root in Germany and in Russia. The first monocle wearers were men in society's upper classes, which may account for the aura of arrogance the monocle seemed to confer on the wearer. After World War I, the monocle fell into into disrepute, its demise hastened no doubt, by its association with the German military.
The lorgnette, two lenses in a frame the user held with a lateral handle, was another 18th century development (by Englishman George Adams). The lorgnette probably developed from the scissors-glass, which was a double eyeglass on a handle.Since the two branches of the handle came together under the nose and looked as if they were about to cut it off, they were known as binocles-ciseaux or scissors glasses. The English changed the size and form of the scissors-glasses and produced the lorgnette. The frame and handle were frequently artistically embellished, since they were used mostly by women and more often as a piece of jewelry than as a visual aid. The lorgnette maintained its popularity with ladies of fashion, who would not wear spectacles. The lorgnette was still popular at the end of the 19th century.
Pince-nez are believed to have appeared in the 1840's, but in the latter part of the century there was a great upsurge in the popularity of the pince-nez for both men and women.There was an enormous variety of styles available. Gentlemenwore any style which suited them--heavy or delicate,round, or oval, straight, or drooping--usually on a ribbon,cord, or chain about the neck or attached to the lapel.Ladies more often than not wore the oval rimless style on a fine gold chain which could be reeled automatically into a button-size eyeglass holder pinned to the dress. Whatever the disadvantages of the pince-nez, it was convenient.
In the 19th century the responsibility of choosing the correct lens lay, as it always had, with the customer. Even when the optician was asked to choose, it was often on a rather casual basis. Spectacles were still available from travelling salesmen. J. C. Bloom, writing in 1940, described the method of fitting glasses in the Western part of the United States in 1889, when he first went into practice: "When a person came in to get a pair of glasses, you would look him over, ask his age, and then reach into one of the boxes that had the mounted goods and you would-reach from box to box until the patient said he could see. He would ask what the price was, and it was anywhere from $150 to $5." A short paragraph in the "Optical Journal" of 1901 warned that itinerant peddlers were as troublesome as ever: "If you value your eyesight, you will place no confidence in the statements of tramps who go from house to house selling spectacles. They will tell you your eyes are diseased and nothing but their electric or magnetised glasseswill save you from blindness. Such talk is an insultto your intelligence." Insulting or not the peddlers evidently succeeded in selling their wares, as they had for centuries.
At the beginning of the 20th century, Dr. Norburne Jenkins wrote in the "Optical Journal": "Wearing spectacles or eyeglasses out of doors in always a necessity .... Glasses are very disfiguring to women and girls. Most tolerate them because they are told that wearing them all the time is the only way to keep from having serious eye trouble. If glasses are all right, they will seldom or never have to be worn in public". Despite this statement, a variety of glasses and optical aids were available and were worn in public. Spectacles with large round lenses and tortoise shell frames became the fashion around 1914. The time had now come when "the average human disfigurement, often an injury, seldom a person, instead of being ashamed that his eyes are on the blink, actually seems to be proud of it". The enormous round spectacles and the pince-nez continued to be worn in the twenties. In the thirties there was increased emphasis on style in glasses with a variety of spectacles available. Meta Rosenthal wrote in 1938 that the pince-nez was still being worn by dowagers, headwaiters, old men, and a few others. The monocle was worn by only a minority in the United States. Sunglasses, however, became very popular in the late 30's.
Contact Lenses
As early as 1845 Sir John Herschel suggested the idea of contact lenses, though he evidently did nothing about it. The practical application of a lens to the eyeball did not occur until late in the century, when F. E. Muller, a German maker of glass eyes, blew a protective lens to place over the eyeball of a man whose lid had been destroyed by cancer. The patient wore the lens until his death, twenty years later, without losing his vision. The term contact lens originated with Dr. A. Eugen Fick, a Swiss physician, who in 1887 published the results of independent experiments with contact lenses. In 1889 August Muller, a German medical student, described his own experimentation with contact lenses. Although his attempts to use ground lenses were not successful, he did help lay the groundwork for further experimentation. In 1892 other doctors and optical firms in Europe cooperated in developing practical contact lenses; before long several firms began specializing in manufacturing them. By the early 40's a variety of contact lenses was available: blown glass, ground glass, molded glass, plastic and glass, and all plastic. All were still comparatively large and could not normally be tolerated for long periods of time. Improvements in manufacturing, material, and fitting of contact lenses lead to increased numbers of Americans wearing them. By 1964 over 6 million people in the United States were wearing contact lenses, 65% of them female.