Sun vs Dolo

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The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy mainly as light and infrared radiation. It is by far the most important source of energy for life on Earth. Its diameter is about 1.39 million kilometres (864,000 miles), or 109 times that of Earth, and its mass is about 330,000 times that of Earth. It accounts for about 99.86% of the total mass of the Solar System. Roughly three quarters of the Sun's mass consists of hydrogen (~73%); the rest is mostly helium (~25%), with much smaller quantities of heavier elements, including oxygen, carbon, neon, and iron.The Sun is a G-type main-sequence star (G2V) based on its spectral class. As such, it is informally and not completely accurately referred to as a yellow dwarf (its light is closer to white than yellow). It formed approximately 4.6 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud. Most of this matter gathered in the center, whereas the rest flattened into an orbiting disk that became the Solar System. The central mass became so hot and dense that it eventually initiated nuclear fusion in its core. It is thought that almost all stars form by this process.

In its core the Sun currently fuses about 600 million tons of hydrogen into helium every second, converting 4 million tons of matter into energy every second as a result. This energy, which can take between 10,000 and 170,000 years to escape the core, is the source of the Sun's light and heat. When hydrogen fusion in its core has diminished to the point at which the Sun is no longer in hydrostatic equilibrium, its core will undergo a marked increase in density and temperature while its outer layers expand, eventually transforming the Sun into a red giant. It is calculated that the Sun will become sufficiently large to engulf the current orbits of Mercury and Venus, and render Earth uninhabitable – but not for about five billion years. After this, it will shed its outer layers and become a dense type of cooling star known as a white dwarf, and no longer produce energy by fusion, but still glow and give off heat from its previous fusion. The enormous effect of the Sun on Earth has been recognized since prehistoric times. The Sun has been regarded by some cultures as a deity. The synodic rotation of Earth and its orbit around the Sun are the basis of solar calendars, one of which is the predominant calendar in use today.

Source: Wikipedia

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Dolo is a town and comune in the Metropolitan City of Venice, Veneto, Italy. It is connected by the SP26 provincial road and is one of the towns of the Riviera del Brenta. The growth of the town of Dolo is due to the gradual downsizing of the maritime power of Venice which was historically oriented towards Dalmatia, the Aegean Sea and the Middle East, occurred concurrently with the fall of the Byzantine Empire, the Islamic expansion and the new opening of navigation routes to the Americas. As a consequence Venice had to address inland its new commercial interests. At the beginning of the fifteenth century, documents testify to the existence of a village which, developing, gave rise to the economic importance of Dolo, always linked to the presence of its water mills collecting wheat from the nearby agricultural lands and then grinding the flour and embarking some into cargo boats pulled by horses along the banks of the Brenta Canal to the lagoon, from where they continued directly up to the Venice island settlement. Drinking water, too, was carried from Dolo to the center of Venice by cargo boats with big barrels filled directly from springs of the little river Seriola. The territory was affected by massive hydraulic works that led to the diversion of the main bed of the river Brenta through an artificial canal with new mouths along the southern sea approaches of the port of Chioggia, while just one part of the old Brenta still flows into the lagoon near the location of Fusina. The purpose of these megalithic hydraulic works was primarily to prevent the progressive flooding of the lagoon by the fresh water of the rivers and thus maintaining a high degree of salinity necessary to make possible the navigation and the very existence of Venice.

Until 1405 the jurisdiction of Dolo was under Padua, and then passed definitely under the dominion of Venice. A boat called the Burchiello transported Venetian noblemen directly to the Riviera sailing along the river Brenta, which was considered a natural extension of the Grand Canal, to spend summer in their sumptuous villas. The water level of the navigable river ways were controlled by a system of locks which are nowadays still visible in the center of Dolo, even if the evolution basin is now ground filled. An old marble table is still on display nearby to show toll tariffs for the transit in the locks for each type of boats coming from or going to Padua. Close to basin, there is a small shipyard, now dismissed, which was anciently used to repair and shelter the boats prior or after transiting the locks, while laboratories of caulk were housed all around. The origin of the name of Dolo is quite uncertain and controversial. One hypothesis asserts the name comes from the contraction of "Dandolo", surname of a noble Venetian family who gave a doge to the city of Venice and had properties here. From old maps it appears that the town’s name was sometimes reported as Dollo, which in archaic Italian language could also mean a tower which was probably demolished thereafter, unless it refers to the church’s belfry which is the highest in the region of Veneto, second only to St. Mark’s belfry in Venice. A lovely picture of the ancient locks of Dolo by the Venetian painter Canaletto can be seen in a London museum.

Source: Wikipedia