What is the speed of light in water, what is its speed in vacuum and what are the properties of light? Light is one of the things that occupy the mind of many scientists, because of the real miracles in its composition and properties, because seeing it is closely related to the theory of relativity advanced by the great scientist Einstein, therefore this by citing the speed of light in water plus some information about light in the article.
The speed of light in water
Water is one of the means through which light passes and each medium through which light passes has a different speed, so that each time light passes through transparent media such as air or glass, its speed decreases by 0.67 relative to its speed in vacuum, and the ratio of the speed of light in vacuum is noteworthy. Its speed during the pointer varies greatly because the refractive index varies from one substance to another.
The speed of light in vacuum is also very large, because there is no medium through which light passes, and 300,000 kilometers per second, which equals 186,282 miles per second, which equals 300 million meters per second.
It is worth noting that scientifically nothing can travel faster than light, the speed of light is greater than 670,616,629 miles per hour and if you could travel at the speed of light, that would allow you to circle the Earth seven times per second.
Read also: Investigation of light, the concept and its nature
Facts about the speed of light
The Greek philosopher Aristotle, who first spoke of the speed of light and opposed the world of Empedocles, objected: “The journey must take time because light moves”. However, Aristotle objected that the light moves for a moment and does not need time.
The Danish scientist who was the first to develop a rough measure of the speed of light by observing and observing a lunar eclipse in Jupiter’s orbit was “Romer I”. The Italian scientist Galileo made some attempts before the Romer world to prove the speed of light, but this and it should be noted that he could not. to do it.
But after the scientist Romer discovered the value of the speed of light, many astronomers led by the director of the Astronomical Observatory Giovanni Cassin opposed it, and on the other hand many scientists were convinced of the point that Romer, led by Isaac Newton, had reached.
Astronomers define a light year as the distance that light travels as 9.5 trillion kilometers in a year.
In 1905, the great scientist Einstein put forward the theory that nothing with mass can move faster than light or at the same speed, and that the vast majority of experiments in the hadron collider or Tevatron are only close to light.
If something moves faster than light, it produces a sonic vacuum and anything that exceeds the speed of light scientifically produces what is called a luminal boom, and this explosion basically happens and happens every day in structures around the world called Cherenkov radiation. . Blue glow inside the nuclear reactors named after the scientist Pavel Cherenkov.
definition of light
Scientists have defined light as electromagnetic radiation consisting of electromagnetic waves visible to the naked eye, and the wavelength of light ranges from 400 to 700 nanometers under the shorter wavelengths of infrared and ultraviolet radiation.
Light has many sources such as lamps, fire and other things which are an important light source for us and the sun is the main light source on Earth and it should be noted that visible light is emitted in the form of electromagnetic waves and the energy carried by the waves is absorbed in different places. .
The energy that absorbs magnetic waves is also known as photons, so a photon represents the amount of light that is considered to be small packets that are studied as particles or waves, this property is also called wave duality of particles.
Read also: What is a light year and who invented this term? How is a light year calculated?
properties of light
Light is one of the forms of energy that allows living organisms to see different things on the earth we live in and at the same time allows these organisms to interact with the environment, and the properties of light have been defined as the behavior followed by the movement of light in space or space. We will show you the characteristics of the light in different sizes and in the following lines, so stay tuned.
Refraction of light
If the refraction of light causes a change in the direction of the rays that pass through transparent media such as air and glass and encounter a transparent medium during the transmission of light, then it should be noted that part of the light is reflected and the second part is refracted in another medium and refraction of light occurs. Because the speed of light in each medium is different from the other, because the speed of light in a vacuum is different from the speed of light in glass and the speed of light in water and others.
absorption of light
When light hits a transparent medium, it is absorbed because some of it is dispersed in the form of thermal energy, and when light energy of different wavelengths is absorbed, the light travels through the material and only the lengths of light are detected. wave not absorbed, so the transmitted wavelengths are seen. As an absorbent.
light reflection
Light reflection is defined as light reflected on the surface where the angle of the reflected ray is equal to the angle of the incident ray, and the light reflection property is used to interpret images reflected by flat and curved mirrors, hence the Diffuse reflection is responsible for allowing objects to see illuminated surfaces everywhere. Light rays are reflected in the eye as they fall over the entire surface.
scattering of light
Scientists have interpreted the property of light scattering as the process by which white light is divided into all the other colors (the colors of the spectrum) that make it up, and each of the colors that make up white has a different index of refraction compared to other colors and the light scattering function is not limited to these colors. On a glass prism that separates only white light, but all transparent objects separate white in their color, but at a slower speed than a prism.
Read also: What is the speed of light and how is it measured?
Definition of a light year
A light year is defined as the distance light travels in a year, a light year is the used measure of time and distance, and while it sounds a bit complicated, it’s not that hard to figure out.
Light passes from the moon to the naked eye in no more than a second, indicating that the moon is a second light away and that sunlight needs eight minutes to reach our eyes, indicating that the sun is eight. light minutes away.
At the end of our article we talked about the speed of light in water and some facts about light and other information you might be interested in about light.
