Interferometry is nothing but optical interference to carry out precise measurements of very small linear dimensions. NPL Flatness Interferometer is developed by the National Physical Laboratory of the United Kingdom. We will discuss this NPL Flatness Interferometer construction and working principle with help of a schematic diagram. Construction of NPL Flatness Interferometer The NPL Flatness […]
What is Optical Interference?
Optical Interference is an effect that can occur when two or more light beams are superimposed. We knew that a ray of light is composed of an infinite number of waves of equal wavelength. the value of the wavelength determines the colour of light. For the sake of simplicity, let us consider two waves, having […]
