The light is one electromagnetic wave, the is a type of power that deserve to travel freely across space, where the irradiate rays travel through the vacuum current in the type of a wave once traveling in the transparent medium current in the form of particles.

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The irradiate waves

The light travels much more slowly v the transparent products than through a vacuum, so, the light bends as it beginning or pipeline the glass.


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Light behaviour through different media


The light transmits through different media through variable degrees, So, Media have the right to be classified according to their capability to enable the irradiate to happen through, right into transparent medium, translucent (semi-transparent) medium, and opaque medium.

The transparent medium

The transparent medium is the tool which permits many light to pass through, the objects deserve to be seen clearly through a transparent medium, the materials like the air, the pure water, the glass cup and also the clean glass in a home window are referred to as transparent.

The transparent medium transmits all visible light, the color of a transparent object relies on the color of light that transmits, therefore if red irradiate passes v a transparent object, the arising light is red.

Although the water is a transparent medium, we have the right to not view fish in ~ the bottom that the sea as the thickness the the water at that point ( the bottom ) is huge enough to stop the light to happen through, By increasing the thickness that the transparent medium, the quantity of light that passes v it decreases.

The translucent medium

The translucent medium is the tool which permits only a component of the light to happen through and also absorbs the remaining part, the objects have the right to be seen v translucent medium less clearly than the transparent one.

The materials like frosted glass and some plastics, flint glass and tissue record are called translucent objects, as soon as the light transmits the materials, just some that the irradiate passes through them.


The light does not pass straight through the materials, It transforms the direction many times and it is scattered together it overcome through, so, we cannot see clearly through them.


The objects ~ above the various other side of a translucent object appear fuzzy and also unclear, as the translucent objects are semi-transparent, part ultraviolet rays deserve to go with them, this is why a person behind a translucent thing can get a sunburn on a sunny day.

The opaque medium

The opaque medium is the tool that does not permit the light to pass through, and the objects can not it is in seen v the opaque medium.

Most products are opaque, as soon as the light strikes an opaque thing none that it overcome through, most of the light is either reflected by the thing or took in and converted to heat.

The products such together the wood, the stone, the metals, the plant leaves, the silver paper paper, the milk, the book, the cartoon, the human skin, and the black honey (molasses) space opaque to clearly shows light.

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The cartoon is an opaque medium because it does no permit the light to happen through and also the objects have the right to not be viewed behind it.

The nature of irradiate waves and analysis of white light

Dispersion the White light analysis, regular prism and also thin prism

Applications ~ above the full reflection of irradiate (Optical fibers, showing prism & Mirage)

Light waves properties, analysis of white light, Spectrum color & light intensity