Interferometry is nothing but optical interference to carry out precise measurements of very small linear dimensions. Pitter–NPL Gauge Interferometer is one of the interferometers in metrology used for determining actual lengths of slip gauges. We will discuss this Pitter–NPL Gauge Interferometer construction and working principle with help of a schematic diagram in this article. As we mentioned above, […]
How to use NPL Flatness Interferometer?
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 an Optical flat in Interferometry?
An Optical Flat is a glass claimed to be extremely flat on one or both sides. it will be used with monochromatic light to determine the flatness of other objects with the help of optical interference. The optical flat is the popular choice for measurement using the interferometry technique, a host of other instruments, popularly […]
What is Interferometry in Metrology?
In the previous article, we have discussed what is Optical Interference, in this article we are going to discuss Interferometry in metrology. In simple words, Interferometry is nothing but the use of optical interference to carrying out precise measurements of very small linear dimensions. Interferometry in Metrology Due to the Optical interference of two or […]
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 […]