Fabry-perot cavity: consider two optical cavities, one with diamond and the other with sio2, inside. mirror separation is 500 μm and the mirror reflectivity are r=95%. use the refractive indices calculated in problem 1, (a) plot the intensity spectrum of fabry-perot cavity from 1500 nm to 1530 nm (b) repeat for r=80%. explain what changed and why. for the mode nearest to 1510 nm, calculate: (c) the mode wavelength (d) the cavity finesse (e) the free-spectral range (f) and spectral width

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k

What is the major difference between thermoplastics and thermosetting plastics from the polymerization structure point of view?