lower distance lock
21River Nene — River The River Nene at Kislingbury Watermill, Northamptonshir …
22Ohio and Erie Canal — Historic District U.S. National Register of Historic Places U.S. National Historic Landmark District …
23Lockheed Have Blue — infobox Aircraft name=Have Blue type=Stealth demonstrator manufacturer=Lockheed caption=HAVE BLUE on a ground test stand designer=Lockheed Skunk Works first flight=December 1st, 1977 introduced=1976 retired=1979 produced= number built=2… …
24Mississippi River — For the river in Canada, see Mississippi River (Ontario). Coordinates: 29°09′04″N 89°15′12″W / 29.15111°N 89.25333°W / …
25Internal ballistics — Internal ballistics, a subfield of ballistics, is the study of a projectile s behavior from the time its propellant s igniter is initiated until it exits the gun barrel. The study of internal ballistics is important to designers and users of… …
26MythBusters (2009 season) — Country of origin Australia United States No. of episodes 23 (includes 3 specials) Broadcast Original channel …
27River Thames — Thames redirects here. For other uses, see Thames (disambiguation). Coordinates: 51°29′56″N 0°36′31″E / 51.4989°N 0.6087°E / 5 …
28MythBusters (2006 season) — Country of origin Australia United States No. of episodes 28 (includes 2 specials) Broadcast Original channel Discovery Channel …
29Toyota Prius — Infobox Automobile name=Toyota Prius manufacturer=Toyota Motor Corporation similar=Honda Civic Hybrid class=Hybrid car layout=FF layout production=1997–presentThe Toyota Prius [ˈpri.əs] is a hybrid electric mid size car developed and manufactured …
30Phase-locked loop — PLL redirects here. For other uses, see PLL (disambiguation). A phase locked loop or phase lock loop (PLL) is a control system that generates an output signal whose phase is related to the phase of an input reference signal. It is an electronic… …
