Determine the expected diffraction angle for the first-order reflection from the (111) set of planes for fcc nickel (ni) when monochromatic radiation of wavelength 0. 1937 nm is used.

thats a little if u want the answer just look it up on google thats what i do haha : )

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.