Liang jing jing magnifying glass11/1/2023 ![]() ![]() In addition, Mozi in the Spring and Autumn Period and the Warring States Period studied the principle of small hole imaging, and the Northern Song Dynasty scientist Shen Kuo, who also analyzed the principle of convex and concave lenses in the "Mengxi Pen Talk", so according to the theoretical conditions at that time, it was possible to make a magnifying glass. For example, in the Yin Ruins oracle bones unearthed in Anyang, some of the oracle bones are as fine as gossamer, and it is obviously difficult to carve without the help of a magnifying glass. ![]() Not only the crystal-embedded gold circle excavated from the tomb of Liu Jing, the king of Guangling, can be directly proved, but also some archaeological findings can also be indirectly proved. Later, when museum experts cleaned this gold circle, they found that it actually had the function of enlarging.įor a long time, we may think that glasses are "imported products" and also named "dioramas", but in fact, glasses were first invented by our ancient ancestors. HD digital Industrial maintenance magnifying glass electron microscope. The experts could not say what it was for a while, so they recorded it and waited for it to be cleaned and studied after returning to the museum. Electronics repairing Microscope 7X-45X Magnification Mobile Phone Repairing. In the upper right of the bottom of the coffin, an expert used a small shovel to pick out a gold ring that looked like a ring, but there was a transparent crystal stone in the middle. Through the magnifying glass: an analysis of regional innovation models based on co-word and meta-synthesis methods. In addition, Liu Jing's tomb also unearthed a large number of gold and silver ware and silk fabrics, but the most surprising thing is a treasure that was almost missed by experts - the inlaid crystal gold circle.Īt that time, Liu Jing's coffin contained hundreds of various burial items, and experts recorded them while counting, afraid of missing any cultural relics. A sheet magnifier consists of many very narrow concentric. A magnifying glass can be used to focus light, such as to concentrate the sun's radiation to create a hot spot at the focus for fire starting. The lens is usually mounted in a frame with a handle. For example, a gold seal was found in Liu Jing's museum, about 2.3 centimeters long and about 0.9 centimeters thick, and the four words "Guangling King Seal" were engraved at the bottom, which not only corroborated the identity of Liu Jing, the king of Guangling, but also added a new treasure to the Nanjing Museum. A magnifying glass is a convex lens that is used to produce a magnified image of an object. In the tomb of Liu Jing, the King of Guangling, a gold circle embedded with crystals was unearthed, which was the first glasses in historyĪlthough Liu Jing's historical evaluation is not high, his tomb has made great contributions to archaeological research. ![]()
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