SSC Physics Note Chapter 13: Modern Physics and Electronics. At the beginning of the 20th century, a new era has been introduced in the field of physics. During this time, the theory of relativity and quantum theory have been invented. To explain the motion of high-speed particles and the various phenomena of nuclear and atomic physics these two theories were needed. Besides, electronics has reached a more developed stage through the process of evolution, as a result of which we become able to construct and use various developed devices of information and communication. Thus, modern physics has been evolved. In this chapter, we shall discuss radioactivity, radioactive particles, and rays, the gradual development of electronics, semiconductor, and the integrated circuit, different electronic devices, microphone, speaker, radio, television, phone, fax machine, internet, and e-mail.
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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