Where is the birthplace of the prime meridian

Tips. Greenwich, the birthplace of the prime meridian, is on the south bank of the River Thames southeast of London, England, and there is a tourist attraction - Greenwich. It is the birthplace of the Earth's meridian as the prime meridian.

The Royal Greenwich Observatory was founded in 1675. In 1884, international astronomers made a decision at the International Longitude Conference in Washington to use the meridian passing through Greenwich as the prime meridian and Greenwich Mean Time as the international standard time. Since then, Greenwich has been famous all over the world.

After the Second World War, the work of the Observatory was affected by the increased intensity of lights in London, coupled with the turbidity of the air. Since 1948, the original observatory has been relocated to Herstmunsu, Sussex, southeast London, but there is still a lot of people visiting the observatory.

The original Greenwich Observatory is now home to Greenwich Park. The original site of the observatory is on the high ground of the park** and has been converted into part of the National Maritime Museum.

When you enter the park, you will see an elegant courtyard on the left side of the path, which is the observatory. On the wall to the right of the gate of the courtyard is a large bell that looks like a silver plate. Installed in 1851, the clock is surrounded by Roman numerals for 24 hours and has a small disc on the upper left indicating the number of seconds.

The time displayed on the clock is the International Standard Time (Greenwich Mean Time).

In the Meridian Pavilion, the most striking thing is a straight copper wire inlaid on the marble floor, which is the world-famous prime meridian. Both sides of the copper wire, marked separately"East longitude"with"West longitude"

Words. People who visit here always like to straddle this copper line, step on the east and west hemispheres with their feet respectively, and take a precious **. One end of the prime meridian reaches the foot of an old two-story building.

The bronze plaque inlaid on the wall** is also engraved with a line that reads:"The prime meridian of the world, latitude 51 degrees 28 minutes 38 seconds 2, longitude 0 degrees 0 minutes 0 seconds 0 seconds. "

The primordial meridian refers to the meridian that connects the north and south poles on the earth.

The prime meridian, also known as the first meridian, 0° meridian, and zero meridian, is a standard reference meridian used to determine the longitude of the earth and the global time. Internationally, the meridian that passes through the original site of the Greenwich Observatory in London, England is called the prime meridian.

Expansion: The prime meridian, or 0 degree meridian, also known as the Greenwich meridian or Greenwich meridian, is a meridian (also known as a meridian) located at the Greenwich Observatory in the United Kingdom. The east and west sides of the prime meridian are set as east and west longitudes, respectively, and meet at 180 degrees.

The prime meridian is not the division of the eastern and western hemispheres.

The zero degree longitude (prime meridian) on Earth is artificially assumed, it is not like latitude, it has a natural beginning and end (equator and both ends). In this way, the choice of the zero meridian was determined after a fierce debate. In 1884, at the International Longitude Academic Model Conference held in Washington, D.C., it was officially determined that the meridian passing through the former site of the Greenwich Observatory in London, England should be used as the global zero degree longitude, which was recognized as the starting line for calculating longitude in the world.

The arc that passes through the Earth's poles and is directly orthogonal to the equator is called the meridian, also known as the meridian. With the prime meridian as zero degrees, the east and west hemispheres are divided into east and west, and the meridians are each 180 degrees. But the eastern and western hemispheres are divided into 20 degrees west longitude and 160 degrees east longitude.

Categories: Science & Engineering.

Analysis: The prime meridian, also known as the zero degree meridian, is a standard reference meridian established to determine the measurement of geographic longitude and coordination time. The earth has a natural zero-degree latitude - the equator, but there is no natural zero-degree longitude, so the prime meridian can only be artificially selected from an infinite number of meridians.

The original prime meridian was set by various countries in response to the need to determine their position.

With the development of the maritime industry, this situation of "separate affairs" gradually changed. In 1767, Mascalin, director of the Greenwich Observatory in the United Kingdom, compiled the British Nautical Astronomical Calendar, which uses the Greenwich meridian as the zero meridian of the earth and the celestial sphere. Soon after the publication of the book, it was adopted by many young people.

In 1871, the first International Geographical Society was held in Antwerp, Belgium, and it was decided that "the Greenwich meridian should be used as the zero meridian in all countries, and it should be implemented within 15 years".

At the 7th International Geodesy Conference held in Rome in October 1883, it was decided that "the prime meridian must be the meridian through a first-class observatory, and in view of the fact that 90 percent of the seafarers engaged in overseas ** have used the Greenwich meridian as the reference to calculate the position (longitude) of the ship, the Greenwich meridian shall be used as the prime meridian by all countries." On the question of timing, it was considered that:

This would be of great convenience when a unified world should be adopted in international interactions.

On October 1, 1881, the International Meridian Conference was held in Washington, D.C., USA. In the end, the General Assembly adopted seven resolutions, among which:

Resolution 2: States present at the meeting ** shall adopt the prime meridian through the center of the meridian ring of the Greenwich Observatory.

Resolution 4: Advocate the use of universal time, and local time or standard time can also be used if needed.

Resolution 5: World Day begins at midnight on the prime meridian, and civil days begin at midnight.

By this time, the prime meridian and universal time were finally established and recognized by most countries.

The prime meridian refers to the meridian that connects the north and south poles on the earth. The prime meridian, the zero degree meridian on the earth, the meridian indicates the north-south direction, all the meridians are equal in length, and the degree marked by the meridian is the longitude.

The prime meridian measures the geographical longitude from the prime meridian to the east and west, respectively, from 0 to 180 degrees. In 1884, the International Meridian Conference held in Washington, D.C., decided to adopt the meridian of the Eri Middle Star Instrument through the Royal Observatory Greenwich (former site) in London, England, as the standard reference meridian for time and longitude measurement, called the prime meridian.

The meaning of the prime meridian: The prime meridian is the zero degree longitude on the earth, it is the standard reference meridian used to determine the longitude of the earth and the global time, and it does not have a natural starting point like the latitude - the equator.

Starting at the North Pole, the prime meridian passes through eight countries, including the United Kingdom, France, Spain, Algeria, Mali, Burkina Faso, Togo and Ghana, and then reaches the South Pole. More than two-thirds of the ships have used this line as a reference meridian.

In addition to defining longitude, the Greenwich meridian was also used as a standard of time. Theoretically, noon in GMT refers to the time when the Sun crosses the Greenwich meridian. However, because the Earth's rotation speed is irregular, standard time has been replaced by Coordinated Universal Time.

The prime meridian is: the meridian of zero degrees, passing through the meridian center of the Greenwich Observatory in the United Kingdom, and is the starting point for calculating the east-west longitude.

The starting longitude that measures longitude on Earth. Also known as the zero meridian. From the prime meridian, the geographical longitude is measured east and west, respectively, from 0° to 180°.

In 1884, the International Meridian Conference held in Washington, D.C., decided to adopt the meridian of the Eri Middle Star Instrument through the Royal Observatory (former site) of Greenwich (Greenwich) in London, England, as the standard reference meridian for time and longitude measurement, called the prime meridian. or royal.

After 1957, when the Greenwich Observatory was relocated, the International Time Bureau defined the origin of the mean observatory longitude on the equator by using the Observatory to dry the observatory, which was derived from the longitude values of these observatories and the time measurement data. Since 1968, the meridian passing through the origin of international customary origin and the origin of longitude of the average observatory has been used as the prime meridian. The longitude zeros of the earth coordinate system determined by various new technologies are as consistent as possible with the prime meridian, but there is often a difference of less than 1 minute between the zero points.

The role of the prime meridian

The site of the former Greenwich Observatory later became the British Ministry of Navigation and the National Maritime Museum astronomical station. The astronomical instruments used in the early days are on display, especially the copper wires inlaid in the ground in the Meridian Hall, the 0° meridian, which attracts visitors from all over the world. Visitors here like to take photos with their feet on both sides of the 0° longitude, symbolizing that they are stepping on both east and west longitudes at the same time.

After the Royal Observatory moved to a new site in 1950, the observatory was transferred to the National Maritime Museum, which houses an astronomical station and an astronomical instrument hall, mainly for exhibitions. Among the astronomical historical materials on display are early astronomical telescopes, clocks, globes, and armillary spheres designed by various countries (many of which were made in China at that time, and many celestial phenomena (such as Halley's Comet)).

The above content refers to the Encyclopedia - Primordial Dust Annihilation Meridian.