What is refractive index in Michelson interferometer?
Then, since the insertion of the glass plate increased the optical path length by 2(n–1)t, and the mirror motion decreased it by 2d, 2d must equal 2(n–1)t, so the refractive index n of the plate can be calculated from Nλ = 2d = 2(n–1)t.
How a Michelson interferometer can be used to measure the index of refraction of a gas?
The Michelson interferometer can be used to measure the index of refraction of a gas by placing an evacuated transparent tube in the light path along one arm of the device. Fringe shifts occur as the gas is slowly added to the tube.
What is the refractive index for air?
1.0003
Some typical refractive indices for yellow light (wavelength equal to 589 nanometres [10−9 metre]) are the following: air, 1.0003; water, 1.333; crown glass, 1.517; dense flint glass, 1.655; and diamond, 2.417.
How a Michelson interferometer can be used for measuring distances?
The slits can be used as simple interferometer. If the distance between the slits is known, the wavelength of the light can be determined by measuring the distance of the maxima and minima. If the wavelength is known, the distance of the slits can be determined.
What is the working principle of Michelson interferometer?
State the principle and describe the construction and working of Michelson Interferometer. Principle: It works on the principle of interference of light by the division of amplitude in light from an extended source is divided into two parts of equal intensity by partial reflection and refraction.
How does Michelson interferometer work?
The Michelson interferometer works by splitting a beam of monochromatic light into two equal amplitude beams. One beam hits a fixed mirror and the other hits a movable mirror giving different beam lengths which converge on a detector screen giving an interference pattern.
What is refractive index of air why the refractive index of other medium is taken with respect to air?
Explanation: Refractive index of others medium is generally taken as with respect to air because. Air or vaccum is rarer medium this means that they will have fastest light traveling in medium to the other which will have less density than air.
What is refractive index of air by the refractive index of other medium is taken with respect to air?
The vacuum has a refractive index of 1….Refractive Index Formula.
| Material | Refractive Index |
|---|---|
| Air | 1.0003 |
| Water | 1.333 |
| Diamond | 2.417 |
| Ice | 1.31 |
How can Michelson interferometer be used to determine wavelength of light?
The Michelson interferometer uses the wave-like properties of light to cause interference patterns. In this experiment, we use a monochromatic co- herent light source, a red laser, with the Michelson interferometer to observe interference patterns in order to determine the wavelength of the light source.
What are interferometer explain Michelson interferometer and measure the wave length by this device?
The Michelson interferometer is the best example of what is called an amplitude-splitting interferometer. With an optical interferometer, one can measure distances directly in terms of wavelength of light used, by counting the interference fringes that move when one or the other of two mirrors are moved.