The Michelson–Morley experiment was a scientific experiment to test for the presence and properties of a substance called aether. This was thought hypothetically to fill empty space. The experiment showed the substance did not exist.
The experiment was done by Albert A. Michelson and Edward Morley in 1887.
Since waves in water need something to move in (water) and sound waves do as well (air), it was believed that light also needed something to move in. Scientists in the 18th century named this substance "aether", after the Greek god of light. They believed that aether was all around us and that it also filled the vacuum of space. Michelson and Morley created this experiment to try and prove the theory that aether existed. They did this with a device called an interferometer. This experiment is a test of Einstein's special relativity theory.
The Earth travels very quickly (more than 100,000 km per hour) around the Sun. If aether exists, the Earth moving through it would cause a "wind" in the same way that there seems to be a wind outside a moving car. To a person in the car, the air outside the car would seem like a moving substance. In the same way, aether should seem like a moving substance to things on Earth.
The interferometer was designed to measure the speed and direction of the "aether wind" by measuring the difference between the speed of light traveling in different directions. It measured this difference by shining a beam of light into a mirror that was only partially coated in silver. Part of the beam would be reflected one way, and the rest would go the other. Those two parts would then be reflected back to where they were split apart, and recombined. By looking at interference patterns in the recombined beam of light, any changes in speed because of the aether wind could be seen.
They found that there was, in fact, no substantial difference in the measurements. This was puzzling to the scientific community at the time, and led to the creation of various new theories to explain the result. The most important was the Lorentz factor, which is used in Albert Einstein's special theory of relativity.
Hydrogen sulfide
Hydrogen sulfide (British English: "hydrogen sulphide") is the chemical compound with the formula , is a colorless, toxic, flammable gas that is responsible for the foul smell of rotten eggs and flatulence. It often results when bacteria break down organic matter if there is no oxygen. This happens in swamps, and sewers (alongside the process of anaerobic digestion). It also happens in volcanic gases, natural gas and some well waters. This is the smell that people often think to be that of sulfur. But sulfur itself does not smell.
Hydrogen sulfide is also known as sulfane, sulfur hydride, sour gas, sulfurated hydrogen, hydrosulfuric acid, sewer gas and stink damp. IUPAC accepts the names "hydrogen sulfide" and "sulfane". When people speak of more complicated compounds they always use the term "sulfane".
Small amounts of hydrogen sulfide can be found in crude petroleum. Sour natural gas can contain up to 28%. But, sour natural gas must be cleaned before it can enter a long distance pipeline. Pipelines limit hydrogen sulfide to 3 grains per thousand cubic feet of natural gas. Volcanoes and hot springs give off some HS, where it probably is made by the hydrolysis of sulfide minerals, i.e. MS + HO to give MO + HS.
Normal average concentration in clean air is about 0.0001-0.0002 ppm.
Hydrogen sulfide is a highly toxic and flammable gas. Because it is heavier than air it tends to accumulate at the bottom of poorly ventilated spaces.
Hydrogen sulfide is considered a broad-spectrum poison, meaning that it can poison several different systems in the body, although the nervous system is most affected. The toxicity of HS is comparable with that of hydrogen cyanide.
William Petty, 2nd Earl of Shelburne
William Petty, 1st Marquess of Lansdowne, KG, PC (2 May 1737–7 May 1805) was a British Whig statesman and Prime Minister of Great Britain. He was born William FitzMaurice in Dublin in Ireland. Petty was known historically as The Earl of Shelburne.
William Cavendish-Bentinck, 3rd Duke of Portland
William Henry Cavendish Cavendish-Bentinck, 3rd Duke of Portland, (14 April 1738 – 30 October 1809) was a British Whig and Tory statesman and twice Prime Minister of the United Kingdom of Great Britain. After his first time as prime minister, the kingdom of Ireland joined Great Britain to form the United Kingdom of Great Britain and Ireland. In the new Parliament of the United Kingdom, he again became prime minister in 1807.
Newbie
Newbie is a slang term for a new person in a community, group, or video game, and especially on the internet. "Newb" is short for newbie and another slang term that comes from the word "new". A noob usually means a bad player in a game, or someone who does not know the rules of a community yet. Being called a noob is usually not a good thing especially if its by an "Epic Gamer".
The use of the word "newbie" originated in World War II. It was a word veterans used to describe new recruits.
In recent years, however, the term has been used more often in Massively Multiplayer Online Role-Playing Game (MMORPG)s or other internet based games. It can also mean someone who has a high level in a game, but is not a skilled player. A person new to a game or a younger player can be referred to as a newbie.
Many places, such as internet forums or online communities, use the word "noob" differently than the word "newbie". A newbie is simply someone who is new to the forum or game. But a noob or n00b is someone who has been around long enough to know better, but doesn't. A noob is thought of as having no respect for the rules and does not seem to want to do anything for himself. So noob has become an offensive term on the internet. To behave like a noob can mean getting disrespect and a lack of interest from other players.
Noobs are usually referred to by the 1337 (pronounced "leet") or skilled players, who have marginally higher experience in the game. When a leet soundly defeats a noob, he is said to be "pawning noobs". Recently "noob" is used mainly just as a name to refer to other players in various online games. It's usually a derogatory term, but can be exchanged as a friendly greeting. A noob is sometimes confused with a "choob" (a low skilled person in a game, but having acquired nice things as a result of playing).
Bodhisattva
A bodhisattva is a Buddhist who is on their way to become a Buddha. They have attained a certain level of enlightenment, but decide not to enter Nirvana so that they can continue helping living beings in the world.
The word Bodhisattva can also refer to certain specific bodhisattvas such as Avalokiteshvara, Manjushri and Vajrapani.
Many bodhisattvas made a special vow that defines their personality or method of helping people. For example, Kshitigarbha vowed not to attain enlightenment until there were no more beings in hell. Some Buddhas, such as Amitabha, made certain vows when they were bodhisattvas. He became a Buddha when these vows were fulfilled.
Tackey and Tsubasa
Tackey & Tsubasa (タッキー&翼) is a Japanese pop duo from Johnny & Associates. Its two members are Hideaki Takizawa (Japanese: 滝沢秀明, "Takizawa Hideaki") and Tsubasa Imai (今井翼, "Imai Tsubasa"). They are known for their Japanese television dramas and they have been successful with numerous hit singles, especially "Kamen" and "Venus". Their records are produced by Avex Trax.
Fruits Basket
Fruits Basket(フルーツバスケット) is a Japanese manga and anime series about an eponymous student. The manga series ran from 1999 to 2006. An anime television series adaptation aired in 2001.