- In physics, the n-body problem is the problem of predicting the individual motions of a group of celestial objects interacting with each other gravitationally. Solving this problem has been motivated by the desire to understand the motions of the Sun, Moon, planets, and visible stars. In the 20th century, understanding the dynamics of globular cluster star systems became an important n-body problem. The n-body problem in general relativity is considerably more difficult to solve due to additional factors like time and space distortions.
- Washington State Route 272 (Wikipedia)
State Route 272 (SR 272) is a 19.22-mile (30.93 km) long state highway serving Whitman County in the U.S. state of Washington. The highway travels from U.S. Route 195 (US 195) in Colfax to a short concurrency with parent route SR 27 in Palouse before ending at the Idaho state line and becoming Idaho State Highway 6 (SH-6). Prior to 1964, the highway was split between Secondary State Highway 3F (SSH 3F) from Colfax to Palouse and a branch of Primary State Highway 3 (PSH 3) from Palouse to the Idaho state line.