A Rayleigh interferometer (as shown in the figure below) can be used to measure the index of refraction of air. Two transparent tubes (T₁ and T₂) are placed behind two slits. One of the tubes (T₂) was filled with air already, while the other tube (T₁) was in vacuum at the beginning. Then air was gradually filled into T₁ until reaching the same pressure as T₂.  During this process, it was observed that the intensity at P changed 98.5 times. The tube length was 20 cm, wavelength of light was 589.3 nm. Please calculate the index of refraction of air (to the accuracy of 0.00001).

Hint: the path length of light in a medium equals to the index of refraction times actual length.

Posted Date: 2/15/2013 2:54:48 AM | Location : United States

Ask an Expert

Related Discussions:- Calculate the index of refraction of air, Assignment Help, Ask Question on Calculate the index of refraction of air, Get Answer, Expert's Help, Calculate the index of refraction of air Discussions

Write discussion on Calculate the index of refraction of air
Your posts are moderated

Write your message here..

Related Questions

Diffrence between isobaric process and isochoric process, Diffrence between... Diffrence between isobaric process and isochoric process   A process in which the pressure is kept constant is known as isobaric process. (i.e.  ΔP=0) A process in which

Find the speed of the bullet before impact, A 30g bullet strikes a .650kg b... A 30g bullet strikes a .650kg block attached to a fixed horizontal spring whose spring constant is 5.90x10 3 N/m and sets it into vibration with an amplitude of 20.0cm. What was th

Radioactivity, A radioactive substance has a half life of 1 min. If one nuc... A radioactive substance has a half life of 1 min. If one nuclei decays now , when will be next decay????

What is flux, The rate of flow of energy or particles across a given surfac... The rate of flow of energy or particles across a given surface.

Explain retina, Retina It is inner most and sensitive layer. It receive... Retina It is inner most and sensitive layer. It receives images of near and far objects.

Heat transfer, what condition is necessary for heat transfer occur what condition is necessary for heat transfer occur

Draw a circuit diagram of a common emitter amplifier, Draw a circuit diagra... Draw a circuit diagram of a common emitter amplifier by using n-p-n transistor. Show input and output voltages graphically. The current gain for common emitter amplifier is 59.

Coulombs law, anyone guide me about the explanation of coulombs law anyone guide me about the explanation of coulombs law

Polytetrafluoroethylene capacitors, A highly polished metal surface is coat... A highly polished metal surface is coated with a colloidal aqueous dispersion of P.T.F.E. it is force dried and sintered, until a continuous film is formed. These capacitors can wi

Ski saga problem, Q. Ski Saga Problem? James Bond is skiing down a snow... Q. Ski Saga Problem? James Bond is skiing down a snowy slope in an attempt to run off a hostile pursuer. Unfortunately the pursuer has a speed advantage since James is only abl