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THIS was our first look at the realm of the invisible. In 1665, Robert Hooke’s Micrographia brought microscopic observations out of his laboratory to a wider world. Hooke believed that, through the ...

A picture may be worth a thousand words, but the inverse is also true: A word is worth a thousand pictures. If I say “bear,” you might picture a grizzly or a black bear, a polar bear, a panda bear, a ...

While the microscope as we know it today emerged in the 17th century, the concept of magnifying objects using lenses dates back to ancient times. The ancient Egyptians and Romans used simple lenses ...

Robert Hooke (1635-1703) is best known for his depiction of a flea as seen through his microscope, made scary through magnification: almost all body and little head, a giant apparatus for storing ...

The earliest microscopes shed light on a once-invisible world. But, Patricia Fara explains, microscopists were uncertain about how well the images reflected reality — just as they are today. In ...