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A logarithmic scale is a nonlinear scale used for a large range of positive multiples of some quantity. Common uses include earthquake strength, sound loudness, light intensity, and pH of solutions.
Mare Marginis is a lunar mare that lies on the very edge of the lunar nearside. The selenographic coordinates of this feature are 13.3° N, 86.1° E, and the diameter is 358 km. The name is Latin for "Sea of the Edge".
Mare Smythii is a lunar mare located along the equator on the easternmost edge of the lunar near side. The Smythii basin where the mare is located is of the Pre-Nectarian epoch, while the surrounding features are of the Nectarian system. The mare material, which make up the floor of the mare, is a high aluminous basalt, and consists of Upper Imbrian basalt covered by Eratosthenian basalt.
This is a list of logarithm topics, by Wikipedia page. See also the list of exponential topics.
Mount Tongariro is a compound volcano in the Taupo Volcanic Zone of the North Island of New Zealand. It is located 20 kilometres (12 mi) to the southwest of Lake Taupo, and is the northernmost of the three active volcanoes that dominate the landscape of the central North Island.
Goddard is a lunar impact crater that is located along the eastern limb of the Moon, and so is visible from the edge from Earth. It is best viewed during favorable librations when the orientation of the Moon brings it further into sight. The crater is located in the Mare Marginis, to the northeast of the prominent crater Neper. Ibn Yunus, a crater remnant, is attached to the southeastern rim, and is partly overlaid by Goddard. To the northeast is Al-Biruni.
Peek is a small lunar impact crater that is located in the northern part of the Mare Smythii near the eastern limb of the Moon. This part of the lunar surface is subject to the effects of libration, and the crater can be hidden from sight during an unfavorable libration. Even when visible, however, the crater is seen almost edge-on, making it difficult to see much detail from the Earth. Due to foreshortening the crater appears close to Schubert, even though the two are about 60 km apart. It lies to the south-southeast of the large crater Neper.
Banachiewicz is a largely degraded lunar impact crater that is located near the eastern limb of the Moon. It was named after Polish astronomer Tadeusz Banachiewicz. Due to its location, this crater appears very foreshortened, the visibility is also more than partly affected by libration, which can completely conceal this formation from view.
Sabatier is a small lunar impact crater that is located near the eastern limb of the Moon, at the southwestern fringes of the Mare Marginis.
Schubert is a lunar impact crater that lies near the eastern limb of the Moon's near side. The crater is located to the northwest of the Mare Smythii, and southwest of the prominent crater Neper. Nearly attached to the southern rim is the crater Back.
Virchow is a small lunar impact crater that is located on the northwestern interior floor of the prominent crater Neper. The latter formation lies near the eastern limb of the Moon, along the southern edge of the Mare Marginis. Observation of this area is hindered due to foreshortening, as well as libration effects. It was named after German physician Rudolf Virchow in 1979. Before, this crater had the designation Neper G.
Jansky is a lunar impact crater that lies along the eastern limb of the Moon. It was named after American physicist Karl Jansky. It lies due east of the larger walled plain Neper, along the southern edge of the Mare Marginis. Due to its location, this crater is viewed from the side from Earth, limiting the amount of detail that can be observed. The visibility is also affected by libration, which can completely conceal this formation from view.
Tacchini is a lunar impact crater on the northwestern edge of the Mare Smythii, near the eastern limb of the Moon. It was named after Italian astronomer Pietro Tacchini. It lies just to the south of the prominent crater Neper, and was designated Neper K before being given its current name by the IAU. To the west-southwest of Tacchini is the crater pair of Schubert and Back.
Renard series are a system of preferred numbers dividing an interval from 1 to 10 into 5, 10, 20, or 40 steps. This set of preferred numbers was proposed in the 1877 by French army engineer Colonel Charles Renard. His system was adopted by the ISO in 1949 to form the ISO Recommendation R3, first published in 1953 or 1954, which evolved into the international standard ISO 3.
Renard's system of preferred numbers divides the interval from 1 to 10 into 5, 10, 20, or 40 steps. The factor between two consecutive numbers in a Renard series is approximately constant, namely the 5th, 10th, 20th, or 40th root of 10, which leads to a geometric sequence. This way, the maximum relative error is minimized if an arbitrary number is replaced by the nearest Renard number multiplied by the appropriate power of 10. One application of the Renard series of numbers is to current rating of electric fuses.
John Craig M.D. was a Scottish physician, known also as an astronomer. He was physician to James VI of Scotland, and accompanied him to England. He also corresponded with Tycho Brahe, and associated with John Napier.
