1. Introduction1.1 General Overview of Resonance and Related Fields Resonance is a phenomenon that occurs in many areas of the physical world such as mechanics, electricity, acoustics, optics, astrophysics, and nuclear physics. It is generally defined as the broad response of a system to an externally applied oscillatory force at a given frequency (called the "natural frequency" or "resonant frequency"). Mechanical resonance in particular occurs during simple harmonic motion. This specific type of movement is defined by two main criteria: when the movement displacement is proportional to the acceleration and when it has the opposite direction. This can be easily illustrated by the general equation, where is acceleration, is a constant, and x is displacement (Tsokos 195-196). Since a system undergoes simple harmonic motion without a constant external force, its amplitude and energy will naturally decrease over time. This could be due to forces such as friction. This decrease is called damping. Damping also affects resonance: with damping, a system will have only a fraction of its amplitude at its resonant frequency. As the damping gradually increases, the amplitude gradually decreases. There are several subcategories of damping. The first is underdamping, where the oscillatory motion continues but the amplitude of the motion slowly decreases. The second category is excessive damping, where the amplitude of the motion decreases to zero without oscillating. The damping explored in this article will be active, meaning the system's response to different frequencies will be hindered intentionally rather than naturally using different means, resistances, and degrees of damping ("Damping"; Tsokos 207-209). life......middle of paper......interaction between planets and asteroids. It is the phenomenon that explains the stable orbits between Neptune and Pluto, and between Jupiter and its moons. It is also an explanation for abnormally higher tides in some bodies of water. Finally, nuclear magnetic resonance is often applied in MRI scanners to excite atoms in the human body and produce biological images. Resonance and damping are incredible phenomena found in a wide variety of scientific fields ranging from the pragmatic to the obscure. Resonance is the prevalent concept in structural failures, radios, musical instruments, and planetary orbits. Damping is useful in the use of vehicle suspensions, tuned mass dampers and soundproofing. The number of applications for resonance and damping will undoubtedly increase in the near future to meet society's needs.