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Microscope

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Microscope
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This solar projection microscope dates from the late 18th century. It is unsigned. The mirror side is placed outside, while the shutter plate is wedged into a window frame, and the projection part is placed inside a darkened room.

The microscope has a fixed microscope tube and a movable mirror which reflects the sunlight. The projection lens in the tube is a screw-barrel simple microscope. The accessories include six eyepieces, eight slides and an ivory box of cover plates.

The solar microscope acts like a camera obscura, projecting an enlarged image onto the opposite wall from the window in which it is fixed. The lens enlarges the object. First described in this form in 1742, it was popular until the mid 19th century.

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