√ Definition of Light, Types, Properties and Examples (Discuss Completely)
Definition of Light, Types, Properties & Examples (Discuss Completely) – On this occasion we will discuss Light. The discussion includes the meaning of light, the various types of light, the nature of light, and examples of light which will be explained in full.
Definition of Light, Types, Properties & Examples (Discuss Completely)
Let's discuss the definition of light first in detail.
Definition of Light
Here are some definitions of light.
- WikipediaThe definition of light according to Wikipedia is energy in the form of visible electromagnetic waves with a wavelength of about 380-750 nm. In physics, light is electromagnetic radiation with both visible and invisible wavelengths.
- KBBI (Big Indonesian Dictionary)The definition of light according to KBBI is light or light (from something that shines such as the sun, moon, lamp) that allows the eye to catch the shadows of the objects around it.
Kinds of Light
Based on the source of light is divided into two kinds, namely as follows:
- The light that comes from the object itself. Like light from the sun, flashlights, lamps, candles.
- The light that emanates from an object due to the reflection of light on the surface of the object from the light source. For example, if we see a red object, it means that the object reflects red light.
Nature of Light
Light has several properties such as penetrating, can be reflected, propagate, and can be refracted. In order to understand more and clearly, the following is the nature of light.
Straight Creeping Light
The nature of light that propagates straight will occur if it passes through an intermediary medium. This incident can be seen clearly in the flashlight that propagates straight. Apart from that, we can also see the light spreading straight on the beam of sunlight that breaks through the precarious gaps or ventilation in our house which will look like straight lines. This proves that light travels in a straight line. The nature of light that propagates straight by humans is used in making flashlights and motor vehicle lights.
Example: The light of the flashlight forms a straight line, the light of a lighthouse on the outskirts of the sea forms a straight line
Reflected Light
Reflected light or called mirroring is a process of light returning from the surface of an object that is exposed to light. The nature of this reflection can be divided into two, namely regular reflection and diffuse reflection. In regular reflection, the reflected light rays are parallel. This occurs when light hits an object that has a flat, shiny or smooth surface. As in the mirror, which is an object that can reflect the most perfect light.
This is because the mirror has a smooth and shiny surface that can reflect light very well. Whereas in diffuse reflection occurs when light hits an object with an uneven surface. Like on uneven ground or on wavy water. With diffuse reflection, places that are not directly exposed to light will also become bright.
Example: perioscope tool, the image when standing in front of the mirror, the image of clear water
Light can be refracted
Refraction is the process of deflecting the direction of propagation of light when it passes through two mediums of different densities. This refraction of light by humans is used in various optical devices. For examplein everyday life we can see some events like
- Clear water when exposed to light will appear shallower than it actually is.
- A pencil or object that has a straight shape will appear to be bent when it is placed in a glass filled with water.
- A mirage event that occurs when a beam of light traveling from cold air to hot air is refracted horizontally, so that an object appears to appear above its actual position.
- Coins in clear water will appear closer to the surface.
- Fish that are put in the aquarium will look bigger than they actually are.
Light Can Be Described
The decomposition of light or light dispersion occurs naturally. An example is when there is a rainbow. A rainbow will appear after it rains. The rainbow consists of several colors such as red, orange, yellow, green, blue, indigo and purple. In fact, these colors come from only one color, namely the white color of the sun. But because the white color is refracted by raindrops, causing white light to be broken down into several colors, so the beautiful colors of the rainbow are formed.
Example: the occurrence of a rainbow, soapy water bubbles exposed to sunlight will appear to have various colors.
Light Can Penetrate Clear Objects
Transparent objects are objects that light can penetrate. Examples include glass, mica, clear plastic, clear water, and clear bottles. So when light hits a clear object, light can penetrate the object.
Example: Light penetrates clear glass, clear glass.
Light Can Experience Interference
Interference is a combination of two or more waves.
Light Can Experience Diffraction (Bending)
In a narrow field, light experiences wave flexion, namely the event or event of deflection of the direction of propagation of light waves because it passes through a narrow gap.
Light Can Experience Polarization
Polarization is an event in which some of the vibrations of light are absorbed so that the light loses most of its vibrations.
Thus has been explained above about Definition of Light, Types, Properties & Examples (Discuss Completely), hopefully can add to your insight and knowledge. Thank you for visiting
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