GPS is known as the acronym “Global Positioning System” which in abbreviationfinder.org means “global positioning system”. The GPS is a navigation system based on 24 satellites (21 operational and 3 backup), in orbit on the planet earth that sends information about the position of a person or object at any time and weather conditions.

The GPS was created, installed and used in 1973 by the Department of Defense of the United States, at the beginning it was of unique and exclusive use for military operations but from the 80s the United States government allowed society civil enjoy this navigation system. GPS can be used on ships, trucks, airplanes, cars, among others. On the other hand, the GPS was designed with the objective that the user obtains knowledge about his position, information of the direction to which he is going, speed, approximate time of arrival, among other data. Some offer voice guidance, to instruct the driver on the movements he must perform to follow the correct direction, alternative routes, speed limitations, among others.

Now, to determine the position of an object, person or address, the GPS calculates the value of longitude, in reference to the Greenwich Meridian, the value of latitude and, finally, the value of altitude. To locate a point, at least four satellites are essential, and the GPS receiver receives the signals and time of each of them, and through the triangulation calculates the position where it is located. There are currently two types of satellite navigation systems: American GPS and the GLONASS controlled by the Russian Government. Also, the European Union tries to launch a satellite navigation system called Galileo.

A compass is an orientation instrument, which allows the traveler to be spatially located relative to the magnetic north by means of a magnetized needle. It is a fundamental instrument for sailors, hikers, pilots, hunters, explorers, etc. The first compass arose in China. It was used primarily as a navigation instrument that allowed overseas travelers to orient themselves in space and define the path to follow, but it was not infallible. Over time, other compass systems were developed.

Parts of a compass

There are different types of compasses. All of them share basically three fundamental elements: a base with a ruler and a reference arrow; a limbo or graduated disc that rotates on its own axis and a magnetized needle pointing north.

Compass Types

Today there are many varieties of compass available, as the systems have been perfected with the advancement of technology. Within the basic range of compasses, the following can be mentioned:

Magnetic compass

The magnetic compass, the oldest of all, allows orientation through the magnetized needle system that points towards the magnetic north pole of the earth, that is, from the identification of the Earth’s magnetic field.

Gyroscopic compass

The gyroscopic compass or gyro always looks to the geographical north and not to the magnetic one, since it uses a set of rings and a disk aligned according to a rotation axis, the inner and outer axis, which are perpendicular to each other. Other types of compasses can be the limbo compass, lentistic compass, cartographic compass, electronic compass and mobile phone compass. The latter depends on the availability of the network at the site of the scan, so it may be unsafe.

  • Andros, Bahamas Andros, Bahamas - The wildest and thus attractive island of the Bahamas is Andros. Mangrove shady forests, centuries-old pines with a dizzying coniferous aroma of resin steamed in the hot sun, palm trees with glossy emerald leaves, white sand and the expanse of the sea – and above all this blessed silence and stunning peace… There are fewer […]
  • Princes' Islands, Turkey Princes’ Islands, Turkey - According to wholevehicles, the Princes’ Islands is an archipelago of nine islands that are administratively one of the districts of the province of Istanbul. They got their name due to the purpose for which they were used by the rulers of the first Byzantine and then the Ottoman empires. All representatives of the most august […]
  • Knoxville, Tennessee Knoxville, Tennessee - The skyline of Knoxville. According to Mcat-test-centers, Knoxville is a city and metropolitan area in the US state of Tennessee. The city has 193,000 inhabitants, with an agglomeration of 893,000 inhabitants (2021). Introduction Knoxville is the main center in eastern Tennessee. The city is located about 160 kilometers northeast of Chattanooga, 250 kilometers north of […]
  • Haikou, China Haikou, China - Haikou is the capital of the southern Chinese province of Hainan (located in the north of the island of the same name with the province). It is a large coastal city located in the tropics. Despite its size, life in Haikou is measured and unhurried. Cars drive slowly, and locals prefer to walk around in […]
  • Heviz, Hungary 2 Heviz, Hungary - Heviz is a dream come true for everyone who wants to escape from the hustle and bustle and plunge into a measured, comfortable and carefree life at least for a while, improve their health, enjoy the moment. This is a charming European town with all the attributes of it: neat streets, flower beds, cozy cafes. […]
  • Pain What is the Definition of Pain? - Pain is a term that comes from Latin and indicates an annoying, afflictive and generally unpleasant sensation in the body or spirit. It can be, therefore, a sensory and objective experience (physical pain) or emotional and subjective (psychic pain). Within colloquial language, it must be stated that we make use of a multitude of expressions […]
  • Dinosaur What is the Definition of Dinosaur? - Dinosaur is a term that comes from a Greek word that can be translated as “terrible lizard”. The concept is used to name the sauropsid vertebrates that dominated the Earth for about 160 million years until, for reasons not yet confirmed, they became extinct. The clade the Dinosauria (its scientific name) included bipedal and quadrupedal […]
  • Hartford, Connecticut Hartford, Connecticut - According to Ehuacom, Hartford is the capital of the state of Connecticut, in the United States. The city has 121,000 inhabitants but is part of the urbanized center and west of the state and has an agglomeration of 1,212,000 inhabitants (2021). Introduction According to mcat-test-centers, Hartford is located on the Connecticut River and is not […]
  • Portland, Oregon Portland, Oregon -   Portland City in the United States Location State Oregon County Multnomah County Coordinates 45°31’N, 122°40’WL General Surface 376 km² – country 346 km² – water 30 km² Residents (April 1, 2020) 652,503 (1886 inhabitant/km²) – agglomeration 2,226,009 (2010) Politics Mayor Ted Wheeler (D) Website portland.gov According to ehuacom, Portland is a major city in […]
  • Museum of Modern Art, New York Museum of Modern Art, New York - Every good tourist should come to New York not only for the sights, but also for the culture. A great choice to enrich your cultural horizons is a visit to the Museum of Modern Art, which was founded in 1929 and is thus one of the oldest museums of its kind in the world. Abby […]