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The Mysterious World of Light – Light Definition In English » English SciTech SciTech

Light is an electromagnetic wave. Which converts from an object and makes its image on our retina. By which we see the object.

What is light in science – Light meaning in hindi

It is a difficult task to describe it accurately because light is also one of the great mysterious wonders of nature. Light is a wonder of nature. It can be understood only by its properties and functions and not in its original form.

Like other powers. There is a unique power which is known only by its speed, frequency, wave length, spectral color difference etc. Secrets of Light (Light definition Many experiments have been done from time to time to understand According to Newton, fine particles of light arise in the form of tiny bullets from the light source, while according to other concepts, the particles of light the universe They produce the same type of waves as those produced by throwing a stone into a reservoir.

The particle and wave nature of light has been proved by many tests, yet the search is on for complete information about the mysterious nature of light. Many facts have been fixed regarding the distance and speed of light.

What is light year – Light year definition

The unit of distance covered by a light ray in zero in one year is called a light-year. This distance is about 58.8 trillion miles or 96.46 trillion km. m. Is.

What is the speed of light about speed of light definition

Light definition is difficult to explain, yet it can be clearly measured accurately. Measuring the speed of light in this context can be called a real discovery. There are many experiments and evidence available to measure the speed of light.

Only a few decades ago, Albert Pichelson proved that the speed of light is 1,86,284 miles per second (3 lakh kilometers per second), which is considered almost correct today. Light travels 58.8 trillion miles in a year, which is called a light-year. This calculation is calculated by multiplying the speed of light per second by the total number of seconds in a year.

What is the nature of light – what is the nature of light definition in hindi

Although the light appears white, but the rainbow is a combination of seven colors. In all these processes, the light rays break down and get distributed in their fundamental color elements and get reflected in the form of parallel lines in the seven colors.

These colors are arranged according to their individual wave length and are visible from one end to the other and are presented in the shape of a string, which is called an English word. VIBGYOR (violet, indigo, blue, green, yellow, orange, red) can also be referred to. These colors are purple, indigo, dark blue, greenish yellow, orange and red respectively. In these, only three colors i.e. blue, green and red are of primary order and all other colors are formed by mixing them.

Red color has the longest wavelength and at the other end blue and related colors like violet have the shortest wavelength respectively. As a result of the difference in these wave-lengths, the rising sun in the morning and setting in the evening, spreading its red long waves of light far and wide, appears to be red in color itself and an incomplete one with pleasant redness around it. generates the scene. This form of light is made by seeing it.

Similarly, the view of the Saptarangi rainbow is also very beautiful. It can be said that the wavelength of light is determined only by its color.
Distribution – Each color of light is distributed in different amounts due to refraction according to its wave-length, presents its different colors. If there is no refraction of light, then it appears to be white in color, but when there is refraction, it appears multicolored.

Color is a property of the nature of light. The color of which the object appears is reflected from it, while all other colors are absorbed or absorbed in it. Hence color is the form of light and not of any object.

Light especially always remains in white color whether its source is the sun or any other object. It consists of seven colours, of which only three are major and the remaining four are sub-prime colours. These colors are contained in the light in such a way that normally their individual color is not seen separately in any way. Glimpses of these colors mix with each other in this way
It remains that their personal nature is not visible in the light.

The colors contained in light can be seen separately only when the light is diffused by refraction. The device used to spread the colors of light separately is called spectrum or spectrum. By refraction, these colors are dissolved and become clearly visible.

Since the amount and intensity of the colors of light depend on the wavelength of the light, the red wavelengths are the longest and the violet wavelengths are the shortest. Waves of other colors also remain within these boundaries. The wavelengths of light are so small that they are measured only in millionths of a micrometer.

What is the dual nature of light – Dual Nature of light meaning in hindi

Both wave-theory and quantum-theory are essential for the explanation of all phenomena related to light. Therefore, it is assumed that the light dual nature), that is, in the light particle (photon) And wave Both qualities are present. Light behaves like a wave in some phenomena and like particles in some events.

In view of this dual nature of light, the French Scientist Louis de Broglie In 1924, propounded the theory that dual nature exists not only in light, but also in matter-particles (particles).material particles) also occurs. According to him, when a particle of matter such as an electron or a proton is in motion, it behaves like a wave, i.e. waves are associated with the moving matter particles. These waves are called matter waves or de Broglie waves.

How light works – some special fact’s about light definition in hindi

When white light falls on an object, only a few wavelengths of light are reflected while most are absorbed by that object itself. The color layer which keeps the body safe from the effects of more light. On which not only the color of the body depends, but the color of the hair of the head also remains accordingly. This substance is located in the roots of hair cells

And the color of the hair depends on the amount of this substance. If this substance is more then the hair color will be darker and if its amount is less then the hair color will be lighter.

With increasing age, the amount of this substance decreases due to the discoloration of the hair.
Eventually it turns white.

Sunlight acts as a kind of anti-disease medicine. Its ultraviolet rays produce vitamin ‘D’ by causing a chemical change in the body, apart from this, this light also prevents infectious diseases by activating the body’s anti-infection cells. Not only this. Due to sunlight, the muscles of the body also become strong and healthy and the nervous system gets excited.

There is no doubt that sunlight acts as a medicine. But it is also true that excessive or excessive use of any medicine is more harmful than beneficial. The same is true of sunlight. It is beneficial to be safe from its extreme and intensity.

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