The human foot has two longitudinal arches and a transverse arch maintained by the interlocking shapes of the foot bones, strong ligaments, and pulling muscles during activity.

Following the " Youngest Toba tuff eruption ", a typical resurgent dome formed within the new caldera, joining two half-domes separated by a longitudinal graben .< ref name = chesner1991 >

However, longitudinal waves by necessity have only one form for a given propagation direction, rather than two polarizations as in a transverse wave, and thus they were unable to explain the phenomenon of birefringence, where two polarizations of light are refracted differently by a crystal.

The labia majora ( singular: labium majus ) are two prominent longitudinal cutaneous folds that extend downward and backward from the mons pubis to the perineum.

Multihulls include: Proas, which have two differently shaped or sized hulls with lateral symmetry ; catamarans, which have two hulls with longitudinal symmetry ; and trimarans, which have a main hull in the center and symmetric stabilizing hulls on either side.

Arrangement of two pairs of scanning electron micrographs of natural objects of less than 1 mm in size ( Ostracoda ) produced by tilting along the longitudinal axis.

In June 1986, Marc Tartaglia, Marc Tartaglia Jr. and Michael Tartaglia created a silk screening device which is defined in its US Patent Document as, " Multi-colored designs are applied on a plurality of textile fabric or sheet materials with a silk screen printer having seven platens arranged in two horizontal rows below a longitudinal heater which is movable across either row.

Orthothecids fall into two groups: one, the orcothecida sensu stricto, is kidney or heart shaped in cross-section due to a longitudinal groove on its ventral surface, and its opercula bear cardinal processes ; the other has a rounded cross-section and often lacks cardinal processes, making them difficult to distinguish from other cornet-shaped calcareous organisms.

Aerodynamic research by NASA found that it is necessary for the two wings to be different in either chord or span, otherwise longitudinal oscillation would occur.

A marked characteristic of the leaf is an areolated portion bounded by two longitudinal curved lines, one line on each side of the midrib, and more conspicuous on the under face of the leaf.

There are two types of chromatic aberration, axial ( longitudinal ), and transverse ( lateral ).

Each phonon mode can be split into one longitudinal and two transverse polarization branches.

Usually, they possess two flagellae: one which extends towards the posterior, called the longitudinal flagellum, and the other forming a lateral circle, called the transverse flagellum.

In human anatomy, the carpal bones can be classified as belonging to two transverse rows or three longitudinal columns.

The two ailerons are typically interconnected so that one goes down when the other goes up: the down-going aileron increases the lift on its wing while the up-going aileron reduces the lift on its wing, producing a rolling moment about the aircraft's longitudinal axis.

A sled, sledge, or sleigh is a land vehicle with a smooth underside or possessing a separate body supported by two or more smooth, relatively narrow, longitudinal runners that travels by sliding across a surface.

The ATTESA-ETS system uses two G-Sensors mounted underneath the center console, which feed lateral and longitudinal inputs to the ECU.

Rather, the engine was made up of two flat plane V8s, mounted transversely, with gearing between the two providing a single output from the center of the engine assembly to the longitudinal transmission.

They bear two longitudinal rows of three or four cusps and transverse crests and furrows.

A single example each of the second lower ( mf2 ) and first upper molariform ( MF1 ) show that these teeth also had longitudinal cusp rows and transverse furrows and crests, but the mf2 had only two or perhaps three cusps per row and the MF1 had three longitudinal rows.

Amphibians also retain the fifth connecting vessel, so that the aorta has two parallel arches.

It is to be observed, that there are two of these arches, that is one at either end of the alley.

It also appears in the design of certain types of arches and as a cross section of the catenoid -- the shape assumed by a soap film bounded by two parallel circular rings.

A spandrel, less often spandril or splaundrel, is the space between two arches or between an arch and a rectangular enclosure.

The left and right upper-corners of the shield are formed by two italic lines, whereas the bottom sides are rounded arches that end with a peak in the middle at the bottom.

An original bend in the river can be traced by observing the angles of two of the arches of the railway viaduct alongside UMIST.

On the two sides of the entrance gate there are magnificent tile-works and arches.

It is made by two squared parts surmounted by two crossing arches supporting the statue of St. Gavino.

The coronet of the heir-apparent bears four-crosses pattée alternating with four fleurs-de-lis, surmounted by a single arch ( the Sovereign's crowns are of the same design, but use two arches ).

The structure of the arsenal consists of two large stone-built halls with vaulting supported by repeated pointed arches.

The chief monuments, of which the ruins are still extant within the circuit of the walls, are: the theatre, of which the remains are in imperfect condition, but sufficient to show that it was not of large size, and apparently of Roman construction, or at least, like that of Tauromenium, rebuilt in Roman times upon the Greek foundations ; a large edifice with two handsome stone arches, commonly called a Gymnasium, but the real purpose of which is very difficult to determine ; several other edifices of Roman times, but of wholly uncertain character, a mosaic pavement, and some Roman tombs.

The downtown core situated on a peninsula between two narrow inlets, South Bay and Artillery Bay, features mostly Mediterranean-style, three-story residential buildings with columned balconies and Venetian-style arches, with retail and commercial spaces occupying the ground level.

The Cross has given its name to a railway station, a hotel, a hospital, a police station ; and two places of entertainment, the Charing Cross Theatre and the Charing Cross Music Hall ( which lay beneath the arches of the station ).

Windows of complex design and of three or more lights or vertical sections, are often designed by overlapping two or more equilateral arches.

Its structure is achieved by drafting two arcs which rise steeply from each springing point on a small radius and then turn into two arches with a wide radius and much lower springing point.

In 1853, at the height of British rule, a certain Col. Thompson of the Royal Engineers designed and erected a new gate consisting of two central arches with two smaller ones.

It is in length, and the loftiest arches, of which there are two tiers, are high.

On the southern face are the Hulda Gates — the triple gate ( which has three arches ) and the double gate ( which has two arches, and is partly obscured by a Crusader building ); these were the entrance and exit ( respectively ) to the Temple Mount from Ophel ( the oldest part of Jerusalem ), and the main access to the Mount for ordinary Jews.

It had 52 stops spread over four manuals and pedals, and stood divided on two steel beams in the North and South crossing arches, with the console standing on the floor next to the north-west pier of the crossing.

At one extreme are the systems of upper New York State, where libraries in two or more counties combine to serve a large, sparsely populated area.

The city is governed by a " strong " mayor system who appoints two council members and / or city residents to serve at the mayor's pleasure on the board of public works and safety.

* In tennis, the server is allowed two attempts to make a correct serve ; in badminton, the server is allowed only one attempt.

In the simplest competition, singles, one of the two opponents flips a coin to see who wins the " mat " and begins a segment of the competition ( in bowling parlance, an " end "), by placing the mat and rolling the jack to the other end of the green to serve as a target.

Pilots serve two to three years, and position assignments are made according to team needs, pilot experience levels, and career considerations for members.

The chief executive could serve two consecutive five-year terms and then pick a successor.

Then the reservists have to serve up to three weeks a year and can be called up to serve two weeks during a non-military crisis.

* 2008 Ottawa radio licences: On November 21, 2008, federal Minister of Canadian Heritage and Official Languages James Moore issued a statement calling on the CRTC to review its approval of two new radio stations, Frank Torres ' CIDG-FM and Astral Media's CJOT-FM, which it had licensed in August 2008 to serve the Ottawa-Gatineau radio market.

The first two serve international routes, as the main gateways to the island for travellers.

For example, if a player's " home " or destination corner is empty ( not an opponent's starting corner ), the player can freely arrange his / her pieces to serve as a ' ladder ' or ' bridge ' between the two opposite ends.

Each enrollee volunteered and, upon passing a physical exam and / or a period of conditioning, was required to serve a minimum six month period with the option to serve as many as four periods, or up to two years if employment outside the Corps was not possible.

He firmly declined all of the offers and many believed he was foregoing his only opportunity to be president ; Thomas E. Dewey was considered the other probable winner, would presumably serve two terms, and Eisenhower, at age 66 in 1956, would then be too old.

These two " Official Declarations " are not revelations, but they serve as the formal announcements that a revelation was received.

* The or vowel points serve two purposes:

The Irish Free State government took over the two wings of the building to serve as a temporary home for some ministries, while the central building became the College of Technology until 1989.

Four interstates and two major United States Highways serve the city.

Conscripts with a General Secondary School Degree serve two years as enlisted personnel.

For example, in the United Methodist Church, bishops are elected for life, can serve up to two terms in a specific conference ( three if special permission is given ), are responsible for ordaining and appointing clergy to pastor churches, perform many administrative duties, preside at the annual sessions of the regional Conferences and at the quadrennial meeting of the worldwide General Conference, have authority for teaching and leading the church on matters of social and doctrinal import, and serve to represent the denomination in ecumenical gatherings.

Cleveland is the only president to serve two non-consecutive terms ( 1885 – 1889 and 1893 – 1897 ) and therefore is the only individual to be counted twice in the numbering of the presidents.

Many in Hong Kong saw this as an adverse impact on one country, two systems, as the Central People's Government interpret the Basic Law to serve its need, that is, a two-year probation for Tsang, instead of a five-year term.

Though of course hotels have always been built in popular destinations, the defining characteristic of a resort hotel is that it exists purely to serve another attraction, the two having the same owners.