A Short Note on Huygens Wave Theory

The principle of the Huygens wave theory depends on the secondary waves and the formation of the new wave depends on the result of disturbances in the luminous. As per the theory, every point of the wave front is converted to the source of the secondary wavelength that spreads in every direction. The speed of the new wavelength is equal to the length of the propagation of the wave. The wave principle depends on the assumption that every point of the luminosity is converted to the source of the spherical wave itself.

What Is Ether?

Ether is the medium of transmission in electromagnetic waves and it is a weightless, frictionless and transparent matter. Ether helps to understand the nature of light and the structure of wave matter. Ether was discovered in the early 18th century to determine the motion of the earth. Einstein’s theory states that the speed of light and electromagnetic waves are constant. The extreme difficulties of the nature of the wavelength and the relativity of the wave motion can be determined by the use of luminiferous ether.

What Is Interference?

Interference is defined as the total effect of the combination of the two or more wave trains intersecting or moving in the path. Interference is the combination of two or more waveforms to form a resultant wave that has a frequency equal to the total wave frequency of the refracted light on the surface. Interference refers to the addition of the amplitude of each wave at the point of intersection. In the interference, the frequency of the wavelength as well as phase must be the same for both light sources. Further, if the wave of the same amplitudes is reinforced together then it is called constructive interference. If one wavelength is lower than the other then it produces destructive interference.

 Types of Interference

• Constructive interference: Constructive interference occurs when the amplitude of the wavelength increases due to the reinforcement of two wavelengths in the same amplitude
• In the constructive interference, the amplitude of the newly formed wave is equal to the sum of the wave reinforcing together.
• Constructive interference occurs if the phase difference of the waves is even multiple of 180°
• Destructive interference: In destructive interference, the amplitude of the wavelength reduces due to the reduction of frequency and amplitude. Reduction in the wave amplitude occurs due to light opposing each other.

Effects of Interference

In the interference, the light is reflected from the inner and outer surfaces combined to display the colour of the matter. The combination of the wavelength helps to remove or reinforce some parts of the white lights by destructive and constructive interference. The wavelength of the inner light is equal to the outer wavelength in the constructive interference giving extra brightness to the luminosity of the matter. Interference of light makes the propagation of waves that is useful for focusing light in photography.

Explain the Diffraction of Light

It refers to the bending of the wavelength to the corner for spreading out the light and illuminating areas of the expected shadow. Single diffraction of light refers to the constant pattern of the light reflected from the source of wavelength. Diffraction occurs when the wave encounters the obstacles of surface matter. Diffraction is the collection of spherical wave fronts from the point of intersection of light. The addition of the wave front depends on the wavelength of the light reflected on the surface.

Types of Diffraction

There are two types of diffraction of light such as Fresnel diffraction and Fraunhofer’s diffraction. Fresnel diffraction refers to the spherical wavelength diffracted from the surface caused by light from a point of source. In this case, the incident beam would be a divergent beam and the diffraction beam will be a convergent beam. Fraunhofer’s diffraction refers to the process of illumination where diffracted and incident wave fronts are planes. Beams are parallel in the process of diffraction due to the infinite distance of travelling light.

Conclusion

The above study indicates that the total wavelength of the resultant wave is equal to the sum of the wavelength of the source light on the surface. In the case of interference, the source of light must be monochromatic. Interference of light depends on the phase and wavelength of the source light to increase the amplitude of the restaurant wave. It is essential to bend out the surface light for increasing the brightness of light reflected from the inner surface. The diffraction of light occurs if the light is bending out to the corners.