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ANSWER: Don’t feel bad. Most people probably haven’t heard of a magic lantern projector. It was the forerunner of slide projectors used until around the turn of the 21st century. But its history goes far back to the 17th century.
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The magic lantern, also known by its Latin name laterna magica, projected images painted, printed, or produced photographically on transparent glass plates. People commonly used these devices for entertainment purposes. By the 19th century, magic lanterns began to be used for educational purposes.
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Originally, artists hand painted the images on glass slides. They initially rendered figures with black paint but soon used transparent colors. Sometimes they first did the painting on oiled paper. Usually they used black paint as a background to block superfluous light, so they could project figures without distracting borders or frames. Artists finished any slides with a layer of transparent lacquer, but later on they used cover glasses to protect the painted layer. Finally, they mounted the slides in wooden frames with a round or square opening for the picture.
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During the 1790s, Thomas Rasmussen Walgensten, a mathematician from Gotland, who historians believe met Christiaan Huygens and from him learned about the magic lantern. In 1670 Walgensten projected an image of Death at the court of King Frederick III of Denmark. This scared some courtiers, but the king dismissed their cowardice and requested to repeat the figure three times. The king died a few days later. After Walgensten died, his widow sold his lanterns to the Danish Royal collection, but they have not been preserved.[9] Walgensten is credited with coining the term "Laterna Magica", assuming he communicated this name to Claude Dechales who in 1674 published about the machine of the "erudite Dane" that he had seen in 1665 in Lyon.
According to legend, Athanasius Kircher secretly used the lantern at night to project the image of Death on windows of apostates to scare them back into church. He hid his magic lantern in a separate room so his audience would be more astonished by the sudden appearance of images.
The earliest reports and illustrations of lantern projections suggest that they were all intended to scare the audience. Pierre Petit called the apparatus lanterne de peur, or lantern of fear, in his 1664 letter to Huygens. Surviving lantern plates and descriptions from the next decades prove that people used these early projectors not just for horror shows, but for projecting all sorts of subjects.
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By the 1730s the use of magic lanterns started to become more widespread when traveling showmen, conjurers, and storytellers added them to their repertoire. The traveling lanternists, called Savoyards because they supposedly came from the Savoy region in France, became a common sight in many European cities.
Thomas Walgensten was the first person to use the term Laterna Magica. He not only realized the technical and artistic possibilities of the magic lantern, but also its economic potential, traveling round Europe demonstrating and selling them.
In the early years of the 19th Century, showmen with lanterns traveled around the country giving shows wherever they stopped. These were known as 'Galantee' showmen, and they would give shows by projecting on walls or white sheets. The subjects probably related to Biblical, moral and current events, and the showman would create stories for the children watching.
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The Galantee showmen gave way to the “Professors,” showmen who had access to more elaborate equipment and wonderful, but expensive, animated slides. The development of oxy-hydrogen limelight and arc light made it possible for these projectionists to create huge images and elaborate effects in front of large audiences. The peak of the magic lantern trade occurred in the 1870s and 1880s.
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