Dmitri Ivanovich Mendeleev (born 8 February (O.S. 27 January) 1834 near Tobolsk – 2 February (O.S. 20 January 20) 1907 in Saint Petersburg) was a Russian chemist who created the periodic table of elements. Many of the predictions made in his periodic table (such as the properties of elements undiscovered at the time) were later proved correct by experiments. Chemical element 101 was named Mendelevium.
Mendeleev was born in village of Verkhnie Aremzyani, near Tobolsk, to Ivan Pavlovich Mendeleev and Maria Dmitrievna Mendeleeva (née Kornilieva). His grandfather was Pavel Maximovich Sokolov, a priest of Russian Orthodox Church from the Tver region. Ivan, with his brothers and sisters, got new family names while attending theological seminary. Later in life, he invented the periodic table of elements.
Mendeleev is thought to be the youngest of 14 siblings, but the exact number differs between sources. At the age of 13, after the death of his father and the destruction of his mother's factory by fire, Mendeleev attended the Gymnasium in Tobolsk.
In 1849, the now poor Mendeleev family went to Saint Petersburg, where he entered the Main Pedagogical Institute in 1850. After graduation, tuberculosis caused him to move to the Crimean Peninsula on the northern coast of the Black Sea in 1855. While there he became a science master of the Simferopol gymnasium №1. He returned with fully restored health to Saint Petersburg in 1857.
Others in the 1860s suggested that elements group together. For example, John Newlands, published his Law of Octaves in 1865. The lack of spaces for undiscovered elements and the placing of two elements in one box were criticized and his ideas were not accepted. Another was Lothar Meyer, who published a work in 1864, describing 28 elements. Neither attempted to predict new elements. In 1863 there were 56 known elements with a new element being discovered at a rate of approximately one each year.
Mendeleev made other important contributions to chemistry. The Russian chemist and science historian L.A. Tchugayev called him "a chemist of genius, first-class physicist, a fruitful researcher in the fields of hydrodynamics, meteorology, geology, certain branches of chemical technology (explosives, petroleum, and fuels, for example) and other disciplines adjacent to chemistry and physics, a thorough expert of chemical industry and industry in general, and an original thinker in the field of economy". Mendeleev was one of the founders, in 1869, of the Russian Chemical Society. He worked on the theory and practice of protectionist trade and on agriculture.
Wakizashi
The wakizashi is a traditional Japanese sword. It is shorter than the katana, which was well known in the beginning of the 17th century as a "kodachi" sword. The two swords were always carried together: the wakizashi finished off the work of the katana sword. Such a sword could be from 30cm to 60cm (12 to 24 inches) long. A small version was called a "ko-wakizashi", a longer one was called an "o-wakizashi". The wakizashi has a handle made of stingray skin and the blade is made from the finest metal and stone.
A wakizashi had a slightly curved blade with a square-shaped hilt (handle). The hilt and the scabbard (the case in which the sword is kept) of a wakizashi was richly decorated with traditional motifs. A wakizashi was more decorated than a katana because it was not used as much as a katana, but still carried everywhere. Another distinctive feature is the scabbard (called a "saya"). The sayas were made to be like the katana but they could have extra pockets for smaller knives, a hair arranger, etc.
The katana and the wakizashi together are called a daishō, which is translated as "large and small". The first part of the word ("dai") means "big" and stands for the katana sword; the second ("sho") stands for wakizashi. Wakizashi was more decorated than a katana and it was thinner, this is why it was designed to cut through softer targets. So it was a sword to make dangerous cuts in weak points of the human body. The use of a daishō on the battlefield gave its user a big advantage. With the two swords the samurai could keep the enemies within a radius of action ranging from 2 to 7 feet (1 to 3 1/2 meters). Miyamoto Musashi, a famous Japanese samurai, was especially skilful at using the daishō.
A wakizashi sword was an irreplaceable weapon for a samurai. The tradition says that when entering a house or any other building, the samurai has to leave his katana with a servant, but the wakizashi could be worn at all times and places. This is why the wakizashi is often called the samurai's "side arm". The wakizashi followed his master even when he went to sleep, because it was always near the bed.
The wakizashi was carried along the thigh and was usually used with one hand; the other hand was used for the katana. The wakizashi proved to be very effective when the katana's length and weight made it hard to use. The wakizashi needs less force to use and it is more maneuverable.
The wakizashi was also the sword used by merchants and artisans (types of traders) who were forbidden from wearing a katana. This fact explains a greater number wakizashi swords were found than katanas. There are even more wakizashi swords than katana swords, although the katana swords had greater meaning for Japanese society.
The wakizashi sword was much used in the ritual of seppuku (suicide because of lost honor). In this ritual it was used along with the shortest Japanese sword - Tanto. The wakizashi was thrust into the torso (body), cutting open vertically. This kind of death was considered honorable for a samurai. When a female samurai committed seppuku she would only cut her own throat.
Albert Camus
Albert Camus (7 November 1913 – 4 January 1960) was a French philosopher and writer. Camus wrote novels and plays. Camus was born in Algeria, a country in North Africa. He had French parents. Camus was an existentialist philosopher. Existentialism is a philosophy that is very different from other ways of thinking. Camus won the Nobel Prize in Literature in 1957.
He was the second-youngest recipient of the Nobel Prize in Literature, after Rudyard Kipling, and the first African-born writer to receive the award. He is the shortest-lived of any Nobel literature laureate to date, having died in an automobile accident just over two years after receiving the award.
Albert Camus was born in Algeria to a poor working-class family. His mother was Spanish and his father was French. His father died in battle and he was left to live with his grandmother. When he was 17 he was diagnosed with tuberculosis, which was very impactful on him at that point in his life. It limited him greatly in his athletics as well as in his career opportunities, due to the fact that tuberculosis is quite contagious. For this reason he claimed that his disease “set him free” because he would have done something else with his life had he seen the opportunity. He went to the University of Algiers, where he graduated with a degree in 1935. In the 1930s, Camus became interested in politics. In 1935, Camus joined the French Communist Party, a political group. In the late 1930s, Camus was a writer for the socialist newspaper, the "Alger-Republicain".
In 1941, Camus wrote his first novel, which was called "The Stranger". During World War II, Camus joined the French Resistance to fight against the Nazi army. After World War II, Camus became friends with another writer named Jean-Paul Sartre. Camus and Sartre often talked about philosophy and politics in small restaurants called cafés.
Camus wrote books about philosophy (ways of thinking) which said that life was "absurd" (makes no sense, or has no meaning). In the 1950s Camus tried to improve human rights. In 1960, Camus died in a car crash. He had two children, Catherine and Jean.
Angevin Empire