L4
Encyclopedia
L4 or L-4 may refer to :
Transportation
Science
Other uses
Transportation
- SP&S Class L-4SP&S Class L-4The Class L-4 Steam Locomotives were originally used by the Astoria & Columbia River Railroad. They became SP&S locomotives when the SP&S acquired the A&CR.- Background :...
, an 1884 steam locomotives class - USS L-4 (SS-43)USS L-4 (SS-43)USS L-4 was an L-class submarine of the United States Navy. Her keel was laid down on 23 March 1914 by Fore River Shipbuilding Company in Quincy, Massachusetts. She was launched on 3 April 1915 sponsored by Mrs. Stephen A...
, a 1915 United States Navy L-class submarine - HMS L4HMS L4HMS L4 was a British L class submarine built by Vickers, Barrow. She was laid down on 21 June 1916 and was commissioned on 26 December 1918....
, a 1918 British L class submarine - Lawson L-4, a 1924 American unflown biplane airliner
- Liberty L-4Liberty L-4The Liberty L-4 was a four-cylinder, water-cooled, inline engine for aircraft developed in the United States during World War I. The Liberty L-4 was an experimental engine of 102 hp, built by the Hudson Motor Co. and intended primarily for use in training airplanes. Only two were produced since...
, a World War I four-cylinder, water-cooled, inline, aero-engine - L-4, one of the U.S. military designations for the Piper Cub in World War II
- L4, an inline-four engine
- L4, IATA code for Lynx Aviation (United States)Lynx Aviation (United States)Lynx Aviation, Inc. was a regional airline based in Denver, Colorado, USA. The airline was a subsidiary of Republic Airways Holdings and operated feeder service for Frontier Airlines. The Lynx name plays off of the tail pictures of its planes, specifically Larry the Lynx, and the fact that it...
Science
- L4 microkernel familyL4 microkernel familyL4 is a family of second-generation microkernels, generally used to implement Unix-like operating systems, but also used in a variety of other systems.L4 was a response to the poor performance of earlier microkernel-base operating systems...
, a family of operating system kernels - Haplogroup L4 (mtDNA)Haplogroup L4 (mtDNA)In human mitochondrial genetics, Haplogroup L4 is a human mitochondrial DNA haplogroup.It is a small African haplogroup.-Distribution:L4 is important in East Africa and Horn of Africa...
, a human mitochondrial DNA haplogroup - Ribosomal protein L4, a human gene
- L4, the fourth Lagrange Point in an astronomical orbital configuration
- L4, a lumbar vertebraLumbar vertebraeThe lumbar vertebrae are the largest segments of the movable part of the vertebral column, and are characterized by the absence of the foramen transversarium within the transverse process, and by the absence of facets on the sides of the body...
of the vertebral column, in human anatomy - L-4, the fourth iteration of L-carrierL-carrierSystemYearFrequencyCoax per cableDistance between repeatersVoice circuits per coax tubeL-119413 MHz48 miles600L-21942840 kHz416 miles360L-319508 MHz84 miles1,860L-4196717 MHz202 miles3,600L-5197257 MHz221 mile10,800L-5E197566 MHz221 mile13,200...
, high capacity frequency division multiplex over coaxial cable used by the Bell System - The Lp spaceLp spaceIn mathematics, the Lp spaces are function spaces defined using a natural generalization of the p-norm for finite-dimensional vector spaces...
for p=4
Other uses
- L4, a modern version of the Bren light machine gun in the British Army
- Leprechaun 4: In SpaceLeprechaun 4: In SpaceLeprechaun 4: In Space is a 1997 direct-to-video horror science fiction comedy film directed by Brian Trenchard-Smith. It is the fourth film in the series, which began with the 1993 film Leprechaun about an evil leprechaun...
, a film