An astronaut in orbit can just resolve two point sources on the earth that are 73.0 firm m} apart. Assume that the resolution is diffraction-limited and use Rayleigh's criterion. What is the astronaut's altitude above the earth? Treat her eye as a circular aperture with a diameter of 4.00 \ m mm (the diameter of her pupil), and take the wavelength of the light to be 500 firm nm} . AEQ FOE ? h= Arm kmCoherent light with wavelength 470 nm falls on a pair of slits. On a screen 1.84 m away, the distance between dark fringes is 3.94 mm. What is the slit separation? Express your answer to three significant figures and include the appropriate units. HA ? d = Value mm