OPTICS AND REALISM IN RENAISSANCE ART: a much publicized assertion holds that 15th-century painters achieved a new level of realism with the help of lenses and mirrors. But recent findings cast doubt on that idea

Article Abstract:

Researchers have suggested that painters from the Renaissance era may have used a concave-mirror projector to place images onto their canvases, far earlier than previous dating to the 18th century. This hypothesis is critiqued, positing that linear perspective instead produced the realism in Renaissance art.

Optical Instrument and Lens Manufacturing, Optical instruments and lenses, Optical Reflectors, Methods, Usage, Optical mirrors, Realism in art, Realism (Art), Painting, Renaissance, Renaissance painting

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Volcanic accomplice

Article Abstract:

Massive eruptions from the impact of a meterorite may have led to the extinction of dinosaurs 65 million years ago with help from volcanic activities called superplumes. Plumes are strengthened by the impact of the meteors.

Discovery and exploration, Dinosaurs, Craters, Mass extinction, Volcanoes, Geophysics, Impact craters

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The hard and the soft: contact lenses

Article Abstract:

The differences between hard (rigid gas-permeable) and soft (hydrogel) lenses is described and depicted, along with details about their manufacture and physiological qualities.

Diseases, Design and construction, Eye, Contact lenses

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