How do disk stars orbit the center of the galaxy? how do disk stars orbit the center of the galaxy? they follow orbits that move up and down through the disk, typically taking them about 50,000 light-years above and below the disk on each orbit. they have orbits randomly inclined and in different directions relative to the galactic center. they all orbit in roughly the same plane and in the same direction. they follow spiral paths along the spiral arms.

Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.