You sell t-shirts in the street corner in order to support some of your tuition costs. Around the middle of the semester, your friend Carlos gives you the following advice: "if you increase the price of each t-shirt you sell you will be able to make a lot more money selling your t-shirts". For Carlos to be right, the price elasticity of t-shirts must be price:

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?