SSC Physics Note Chapter 9: Refraction of Light. A straight stick appears to be bent when it is obliquely immersed partly in the water. If we look directly to the bottom of a jug full of transparent water its bottom seems to be raised up. Of course, we observe these phenomena in our everyday life. These events result from a special property of light called refraction. A special event of refraction is a total internal reflection. Mirage is formed in the desert, the diamond looks bright and information signals are sent through optical fiber because of total internal reflection of light. Many of us use spectacles to remove the defects of the eyes. The glass of the spectacle is a lens. We will discuss all these phenomena in this chapter.
The physics is one of the oldest academic disciplines, perhaps the oldest through the inclusion of astronomy. In the last two millennia, physics was a part of natural philosophy, chemistry, certain branches of mathematics and biology, but during the scientific revolution in the 17th century, the natural sciences emerged as unique in its own right research programs. Physics intersects with many interdisciplinary areas of research, such as Biophysics and quantum chemistry, and physics limits are not rigidly defined. New ideas in physics often explain the fundamentals of other sciences mechanisms, to open new avenues of research in areas such as mathematics and philosophy.
Physics is one of the oldest academic disciplines and, through its inclusion of astronomy, perhaps the oldest. Over the last two millennia, physics, chemistry, biology, and certain branches of mathematics were a part of natural philosophy, but during the scientific revolution in the 17th century, these natural sciences emerged as unique research endeavors in their own right. Physics intersects with many interdisciplinary areas of research, such as biophysics and quantum chemistry, and the boundaries of physics are not rigidly defined. New ideas in physics often explain the fundamental mechanisms studied by other sciences and suggest new avenues of research in academic disciplines such as mathematics and philosophy.
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