Superposition is a fundamental principle in physics. It states that if there are multiple waves in the same space at the same time, then the resultant wave at each location is equal to the sum of the amplitudes of the individual waves at that point.
< br >
In other words, the coincidence principle states that when multiple waves pass through a space at the same time, they will superposition each other according to the magnitude of their amplitudes to form a composite wave. This principle has been widely used in many fields of physics, such as sound waves, light waves, electromagnetic waves and so on.
< br >
Taking sound waves as an example, sound waves from multiple sound sources exist in a space at the same time, and they will interfere with each other and superimpose, producing a new sound effect, the so-called reverberation effect. According to the impact principle, the sound pressure change at each position is the sum of the amplitudes of all sound sources corresponding to the sound waves it is subjected to, thus forming a composite sound wave. This synthesis effect can be calculated and simulated by mathematical methods, so as to help people better understand and grasp these phenomena, and realize the application in engineering.
Collision, astronomical phenomenon. When two objects have the same apparent longitude or right ascension, they are called conjunction, and when they differ by 180 degrees, they are called collision.
When two objects have the same apparent longitude or right ascension, they are called conjunction, and when they differ by 180 degrees, they are called collision. When the planets and the Sun's apparent longitude are the same, it is called conjunction, and when the difference is 180°, it is called opposition. Synopsis of the inner planets (Mercury and Venus) is divided into upper synopsis, which occurs when the sun is between the inner planet and Earth, and lower synopsis, which occurs when the planet is between the Sun and Earth. The inner planets do not oppose the sun because they orbit inside the Earth.