Double-Slit Diffraction

A double slit produces a diffraction pattern that is a combination of single- and double-slit interference. Find the ratio of the width of the slits to the separation between them, if the first minimum of the single-slit pattern falls on the fifth maximum of the double-slit pattern. (This will greatly reduce the intensity of the fifth maximum.)

NO NOTES FOR 8/22 __________________________________________________________________________ 8/24 SIZE AND SCALE -- The Earth is 15,000 km in diameter -- The sun is 1,500,000 km in diameter - 100x bigger than Earth -- Light year = the distance light travels in one year -- Distance formula: D = V x T - V = speed - T - time -- 1 light year = c - c = 300,000 km/s - 3 x 10^5 km/s - 3 x 10^8 m/s CONSTELLATIONS -- Used to use constellations to find stars of interest by using their position relative to well-known constellations -- Coordinate systems - both for the Earth and for the sky - Earth: longitude (0-360 degrees), latitude (-90 degrees - 90 degrees) - Celestial: right ascension (0-24 hours), declination ( -- Constellations = coordinate system for the sky - Celestial sphere - mental construct attached to the existing coordinate system - Cultures connect dots of constellations in different ways (e.g. Orion vs an hourglass) - Constellations look different from different vantage points, places on Earth, etc.