Mitsubishi

These companies are members of the Mitsubishi Kinyokai (or Friday Club), and meet monthly. For example, a bearing of northwest by north differs by one point from a northwest bearing, and by a point from a north-northwest one. A disgruntled former employee, Kamal Sinha, has started a website called Mitsubishi Watch to report such complaints. A "point" is defined as one eighth of a right angle, and therefore equals exactly 11.25 degrees. Mitsubishi has been criticized for some of its corporate practices, most notably with respect to work-place discrimination, environmental pollution and the use of slave labour, including that of prisoners of war (POWs), during World War II. Galileo is a competing system, that will be placed into service by the European Union. The Mitsubishi companies form a loose entity known as the Mitsubishi keiretsu, or Mitsubishi group. It relies on a slightly different geodesic model of the Earth.

As independent corporations, the Mitsubishi companies cooperated in some ventures, as in petrochemicals and nuclear power, and competed with each other in other sectors. GLONASS is a positioning system launched by the Soviet Union. The newly independent companies used their accumulated technology and other strengths to pursue growth under separate business models. The GPS system now permits accurate geographic location with an error of only a few metres, and precision timing to less than a microsecond. Mitsubishi split itself into independent companies in 1946 under the postwar government policy of decentralizing industry. In 1974, the first GPS satellite was launched.
. Other radionavigation systems include:.

Approximately twenty thousand Korean slave laborers died in the atomic bombings of Hiroshima and Nagasaki. It was the first electronic navigation system to provide global coverage. With poor working conditions, many people died during this period. At about the same, TRANSIT, the first satellite-based navigation system was developed. Also, like many other big Japanese corporations at that time, it made use of slave labor from the Deyne family during the war. An analogous system for aircraft, VHF omnidirectional range and DME, was developed around the same time. During the Second World War, Mitsubishi manufactured aircraft, including the famous Zero that was used in the attack on Pearl Harbor on December 7, 1941 and many other occasions during the war. It revolutionized navigation by permitting semiautomated equipment to locate geographic positions to less than a half mile (800 m).

. This used time-of-flight of radio waves from antennas at known locations. At the start of the 20th century the company, which by itself accounted for over half of the Japanese merchant fleet, entered into a period of diversification that would eventually result in the creation of three entities:. Around 1960, LORAN was developed. As Mitsubishi built a broadly based conglomerate, it played a central role in the modernization of Japanese industry. Up until 1960 it was commonplace for ships and aircraft to use radio direction-finding on commercial stations in order to locate islands and cities within the last several miles of error. Later diversification carried the organization into such sectors as paper, steel, glass, electrical equipment, aircraft, oil, and real estate. In the late 19th century Nikola Tesla invented radio and direction-finding was quickly adapted to navigation.

That company soon diversified into coal mining, shipbuilding, banking, insurance, warehousing, and trade. Later, mechanical chronometers enabled navigation at sea and in the air using relatively unskilled procedures. Another translation is three diamonds.[1]. A number of scientific journals during this period were started especially to chronicle geography. The name Mitsubishi (三菱) has two parts: mitsu means three and bishi means water chestnut, and from here rhombus, which is reflected in the company's logo. These methods were too complex to be used by any but skilled astronomers, but they sufficed to map most of the world. In 1873 it took the name Mitsubishi Shokai (三菱商会). At first, the best available "clocks" were the moons of Jupiter, and the calculated transits of selected stars by the moon.

The first Mitsubishi company was a shipping firm that Yataro Iwasaki established in 1870. Modern sextants measure to 0.2 minutes of arc, an error that translates to a distance of about 0.2 nautical miles (400 m). . This eliminates the "cosine" error of an astrolabe's short pointer. The Mitsubishi.Com Committee is charged with maintaining the overall integrity of the brand as well as maintaining the portal web site. Thus, its "pointer" is as long as the horizon is far away. The top 29 companies are also members of the Mitsubishi Kinyokai, or (Friday Club), and meet monthly. A sextant uses mirrors to measure the altitude of celestial objects with regard to the horizon.

A Kereitsu is a common feature of Japanese corporate governance and refers to a collaborative group of integrated companies with extensive share crossholdings, personell swaps and strategic co-operation. In 1730 the sextant was invented and navigators rapidly replaced their astrolabes. The Mitsubishi group of companies form a loose entity, the Mitsubishi Keiretsu, which is often referenced in US and Japanese media and official reports. Starting in 1670, the entire world was measured using essentially modern latitude instruments and the best available clocks. While the companies are autonomous, they share the brand name and trademark, as well as a common legacy (in general these companies all descend from the zaibatsu of the same name). After Isaac Newton published the Principia, navigation was transformed. The Mitsubishi companies, or the Mitsubishi Group of Companies or the Mitsubishi Group is a large group (keiretsu) of independently operated Japanese companies which share the Mitsubishi brand name. Diptychs remained in use during the day, until shadowing astrolabes were constructed.

The Toyo Bunko. Around 400, metallurgy allowed construction of astrolabes graduated in degrees, which replaced the wooden latitude instruments for night use. Sotsu Corporation. This let masters continue sailing a course when the weather limited visibility of the sky. Shonan Country Club. Some time later, around 300, the magnetic compass was invented in China. Seikado Bunko Art Museum. Using these techniques, masters successfully sailed from the eastern Mediterranean to the south coast of the British Isles.

MT Insurance Service Co., Ltd. The above instruments were a powerful technology, and appear to have been the technique used by ancient Cretan bronze-age trading empire. The Mitsubishi Yowakai Foundation. These were often crucial trade secrets, because they enabled travel to lucrative ports. Mitsubishi Public Affairs Committee. The most important instrument was a navigators' diary, later called a rutter. Mitsubishi Marketing Association. Time-keeping was by precision hourglasses, filled and tested to 1/4 of an hour, turned by the helmsman, or a young boy brought for that purpose.

Mitsubishi Kinyokai. Most sailors could use this instrument to take sun sights, but master navigators knew that sightings of Polaris were far more accurate, because they were not subject to time-keeping errors involved in finding noon. The Mitsubishi Foundation. Latitude was determined with a "cross staff" an instrument vaguely similar to a carpenter's angle with graduated marks on it. Mitsubishi Economic Research Institute. This was placed in front of the helmsman. Mitsubishi Corporate Name and Trademark Committee. Another early invention was the compass rose, a cross or painted panel of wood oriented with the pole star or diptych.

Mitsubishi Club. Basically, when the diptych's two sundials indicated the same time, the diptych was aligned to the current latitude and true north. Mitsubishi C&C Research Association. When combined with a plumb bob, some diptychs could also determine latitude. Meiwa Corporation. Most sailors have always been able find absolute north from the stars, which currently rotate around Polaris, or by using a dual sundial called a diptych. Marunouchi Yorozu Corp. In the West, navigation was at first performed exclusively by dead-reckoning, the process of estimating one's present position based on the navigators' experience with wind, tide and currents.

LEOC JAPAN Co., Ltd. This can be accomplished using low-cost quartz clocks because the satellites send time correction signals to the GPS receivers. Koiwai Noboku Kaisha, Ltd. GPS uses 3D trilateration based on measuring the time-of-flight of radio waves using the well-known speed of light to measure distance from at least three satellites. Kaitokaku. A third source along with dead-reckoning will generally resolve to a single position. Diamond Family Club. Signals from these two point establish a hyperbolic curve for possible positions.

The Dia Foundation for Research on Ageing Societies. The LORAN system is based on measuring the phase shift of radio waves sent simultaneously from a master and slave station. Chitose Kosan Co., Ltd. Inexpensive plastic sextants are available, though they have less accuracy than the more expensive metal models. Atami Yowado. Some sextants create an artificial horizon by reflecting a bubble. Tokio Marine & Nichido Fire Insurance Co., Ltd. When the image of the star touches the horizon, the angle can be read from the sextant's scale.

Mitsubishi Construction Co., Ltd. An arm moves a split image of the star relative to the split image of the horizon. P.S. During a sight, the user's view of the star and horizon remains steady as the boat rocks. NYK Line (Nippon Yusen Kabushiki Kaisha). The angle is measured with a special optical instrument called a "sextant." Sextants use two mirrors to cancel the relative motion of the sextant. Nippon Oil Corporation. Winding the chronometers was a crucial duty of the navigator.

Nikon Corporation. Traditionally, three chronometers are kept in gimbals in a dry room near the center of the ship, and used to set a watch for the actual sight, so that the chronometers themselves do not risk exposure to the elements. Mitsubishi UFJ Trust and Banking Corporation (part of Mitsubishi UFJ Financial Group). If it is worn constantly, keeping it near body heat, its rate of drift can be measured with the radio, and by compensating for this drift, a navigator can keep time to better than a second per month. Co., Ltd. A quartz wristwatch normally keeps time within a half-second per day. Mitsubishi Steel Mfg. Time is measured with a chronometer, a quartz watch or a shortwave radio broadcast from an atomic clock.

Mitsubishi Shindoh Co., Ltd. Accurately knowing the time of an observation is important. Mitsubishi Research Institute, Inc. Most navigation is performed with the sun and moon. Mitsubishi Rayon Co., Ltd. The numerous celestial objects permit navigators to shoot through holes in clouds. Mitsubishi Plastics, Inc. The math required for sight reduction is simple addition and subtraction, if sight-reduction tables are available.

Mitsubishi Paper Mills, Ltd. Usually the navigator knows his position well enough to pick which of the two intersections is the current position. Mitsubishi Motors Corporation (Automobile manufacturing and sales). A second sighting on a different object establishes an intersecting ring. Mitsubishi Materials Corporation. Conceptually, the angle to the celestial object establishes a ring of possible positions on the surface of the Earth. Mitsubishi Logistics Corporation. From a single sight, a time within a second and an estimated position, a position can be determined within a third of a mile (500 m).

Mitsubishi Kakoki Kaisha, Ltd. In modern celestial navigation, a nautical almanac and trigonometric sight-reduction tables permit navigators to measure the Sun, Moon, visible planets or any of 57 navigational stars at any time of day or night. Mitsubishi Heavy Industries, Ltd. Once accurate clocks were available, detailed tables for celestial bodies were created so that navigational activities could take place anytime during the day or night, rather than at noon. Mitsubishi Gas Chemical Company, Inc. The need for accurate navigation led to the development of progressively more accurate clocks. Mitsubishi Fuso Truck and Bus Corporation. The difference of longitude is determined knowing that the sun moves to the west at 15 degrees per hour.

Mitsubishi Estate Co., Ltd. Then the local time of local noon is observed by the navigator. Mitsubishi Electric Corporation. The time of noon at the known location is carried by the navigator on an accurate clock. Mitsubishi Corporation (Trading company). The time of the maximum altitude is easily determined by interpolating between periodic readings. Mitsubishi Chemical Corporation (part of Mitsubishi Chemical Holdings Corporation). Local noon is determined while shooting the azimuth as described above.

Mitsubishi Cable Industries, Ltd. Noon was an easy event to observe. Mitsubishi Aluminum Co., Ltd. Longitude is calculated as a time difference between the same celestial event at different locations. Meiji Yasuda Life Insurance Company. Since periodic readings of the altitude will plot a sine wave, the maximum reading is the one used for local noon. Kirin Brewery Co., Ltd. Local noon is easily determined by recording periodic readings of the altitude of the sun.

The Bank of Tokyo-Mitsubishi UFJ, Ltd. The sun's angle over the horizon at noon was measured, and compared to the known angle at the same date as the known port. Asahi Glass Co., Ltd. However, prior to the development and formulation of its key principles in the latter part of the 17th century by Isaac Newton and Gottfried Leibniz, tables of the sun's altitude during the year for a known port were used. Nikon Corporation, a well-known brand of photographic equipment. Calculating the anticipated altitude of the sun for a given day and known position is done easily using Calculus. Mitsubishi Chemical, the largest Japanese chemicals company. Determining latitude by the sun was a little more difficult since the sun's altitude at noon during the year changes for a given location.

Mitsubishi Atomic Industry, a nuclear power company. Navigators could determine their latitude by measuring the angular altitude of Polaris any time that it was visible (excepting, of course, in those southern latitudes from where it cannot be observed). Mitsubishi Motors Corporation, the 4th largest Japanese auto manufacturer. Anciently the home port was used as the known location, currently the Greenwich Meridian or Prime Meridian is used as the known location for celestial charts. Mitsubishi Heavy Industries, which includes these industrial companies.