WaveLength

Uv Wavelength

A wave can be simply defined as a form of energy that is able to travel from one point to other. A wave travels in a particular pattern. Wavelength is measurement of wave size. Let’s suppose that a wave is travelling from one point to other. Now if we measure the distance between two consecutive high points of that wave, the result is wave-length. Similarly, distance between two consecutive troughs of a wave also defines wave-length (WL).

I like to share this frequency to wavelength equation with you all through my article.

Waves that arise as a result of oscillating magnetic and electric fields are known as electromagnetic waves. Example includes UV waves. If we talk about electromagnetic spectrum, UV waves falls between visible light and X-rays. This is due to the fact that WL of UV waves ranges from 380 nm to 10 nm. UV waves that have WL between 380 nm to 200 nm are known as near UV waves. On the other hand, UV waves having WL of 200 to 10 nm are known as extreme UV rays.

Longest Wavelength

WL is defined as distance between two consecutive wave crests. Electromagnetic spectrum includes electromagnetic waves arranged in accordance to their WL. Among these gamma rays have the shortest WL while the radio waves have the longest one. Radio waves have WL ranging from few mm to 20 meters.
Since radio waves have longest WL, they have most poor resolution. This is the reason that radio telescopes are made up of large metallic dishes or even several metallic dishes arranged in a row to serve as large telescope. These dishes reflect the radio waves to a point that is known as focus point.

Microwave Wavelength

Microwave WL falls in a range between that of radio waves and infrared rays. Microwave rays have WL ranging from 1 mm to 25 μm. Hence some longer microwaves can easily enter the earth’s atmosphere while the other shorter microwaves cannot.
Since these waves have better resolution as compared to radio waves, microwave telescopes are not as large as the radio telescopes.

Units of Wavelength

WL is measured in meters. To measure relatively smaller WLs of some electromagnetic radiations (UV rays, X-rays etc), other units are used. These are namely micrometer (μm), millimetre (mm), nano-meter (nm) etc. Angstrom is also used to measure WL. One angstrom is equals to 10-10 m.

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Wavelength to Energy

Energy of a wave is given by following formula:
E= hv
Here E= energy of wave
h=Plank constant
v= frequency of wave

Since v= c/ λ
Where v= frequency of wave
c=speed of light
λ= WL of wave
Hence
E= hc/ λ
Hence WL of a wave is inversely proportional to its energy. Shorter waves have higher energy content as compared to those with longer WL.