How Does Light Travel:
How light travel through space is one of the perennial mysteries of physics. In the modern world, scientist explains that it is a wave phenomenon that does not need a medium to propagate. Quantum theory tells us that it also behaves as a collection of particles under certain circumstances. For the purpose of the macroscopic world, you can describe its behavior by treating it as a wave. Also applying the principles of waves mechanics to describe its motion. Here I will tell you how does light travel.
Here are some details and theories that how light travel.
Here I will tell you to step by step.
There was a Scottish physicist James clerk maxwell in the mid-1800s. He establishes that light is a form of electromagnetic energy that travels in the form of waves. There is a question that how it manages to do so in absence of a medium explained by the nature of electromagnetic vibrations. Electrical vibration is produced when a charged particle vibrates which also includes magnetic waves. The physicist tells that this vibration occurs in the perpendicular plane. Oscillations propagate in the form of pairs outward from the source without any medium. The electromagnetic field is an exception to the permeates the universe is required to conduct them.
A ray of light:
As electromagnetic generate light then light travels outward as a series of concentric spheres. These spheres are spaced in accordance with the vibration of the source of light. Light takes the shortest path between a source and its destination. If you draw a line between source and destination with perpendicular way then we will call it a ray. Spherical wavefront generates from the source into a series of parallel lines. These lines move in the direction of the ray. This method defines the wavelength of light. The number of lines that pass through a given point at a given time is frequency.
Speed of light:
Frequency and wavelength directly affect the energy of wave packets. This happens according to the relationship established by the physicist Max Planck in the early 1900s. If the light is visible then frequency does not affect the energy of wave packets. But in a vacuum, it is always 299,792kilometrs per second. It is according to the theory of the einstien of relativity.
Refraction and rainbows:
The speed of light is proportional to the density of the medium. Light travels faster in a vacuum than in any medium. Refraction is a change in the direction of a wave pass one medium to another which causes a change in its speed. Desperation is the spreading of white light in the full spectrum of wavelengths. So when reflection, refraction, and dispersion combine with water droplets which result in a spectrum of light on the sky.
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