![]() It is also known as an opaque projector, because instead of focusing a beam of light through a translucent medium, it illuminated the surface on which it sat. This, in turn, inspired Swiss Astronomer Leonhard Euler’s Episcope in the mid-18th century. Since the color separation that occurred with the glass optics of his telescope interfered with his astronomical experiments, he constructed a telescope made of mirrors instead. ![]() Newton’s experiments with prisms also demonstrated one of the inherent challenges of producing a clear optical image with glass lenses, chromatic aberration. The two opposing schools of thought went back and forth for centuries, but the mystery persisted. Newton observed the way a prism of glass separated a beam of light into a distinct spectrum of colors and concluded that this separation could only occur if light was made of incredibly tiny particles, or corpuscules. Huygens and others observed the reflections, diffractions, and refractions of light and proposed that light was a wave, a luminiferous ether that spread out from its source in all directions.įamed English Physicist Isaac Newton disagreed, believing that if light traveled in a straight line, then it could not be a wave. More than just the inventor of one of the most popular projection systems of all time, Christaan Huygens was a Natural Philosopher who, with his 17th-century contemporaries, sought to explain the inner workings of the world. New glass-making techniques using lead resulted in optically clear, low-dispersion lenses and prisms. New optical technology wasn’t just accelerating humans’ ability to create a spectacle, it was advancing our knowledge of the inner workings of the universe. What is considered a short throw projector?.How far do you put a projector from the screen?. ![]()
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