Analytical chemistry is a branch of chemistry. It tries to analyze chemicals in things. A simple job would be to see how much zinc is in a piece of brass. There are several methods, like chromatography and mass spectrometry to do this. Flame tests can be used for a basic analysis.
More formally: it is the study of the chemical components of natural and artificial materials.
Qualitative analysis finds what chemical species are in the sample. Quantitative analysis finds out how much of a substance there are in a sample. Substances in a sample are often separated from each other using chromatography before the analysis. This is because a sample can contain many different substances.
Mussaurus
Mussaurus (meaning "mouse lizard") was an early, plant-eating prosauropod dinosaur from the Upper Triassic, about 215 million years ago. It was found in southern Argentina. It gets its name from the small size of the skeletons first discovered.
They were large-eyed hatchlings (babies), only 9-16 inches long (18-37 cm); these are the smallest dinosaur skeletons yet found.
However, "Mussaurus" is now known from adult specimens. the name is something of a misnomer; adults possibly reached 3 m (10 ft) in length, and weighed . "Mussaurus" possesses anatomical features suggesting a close, possibly transitional evolutionary relationship with true sauropods.
Afrovenator
Afrovenator was a theropod dinosaur from the Middle Jurassic of northern Africa. It was a bipedal meat-eating predator with long bladelike teeth. Fossils have been found in Abaka, Niger in the southern Sahara desert. A nearly complete "Afrovenator" was found in 1993. It is one of the most complete dinosaurs found in Africa so far.
The rocks where it was found were redescribed as "mid-Jurassic" after the discovery had been announced.
It is in a group of theropods which are known as the Megalosaurs.
Superman (video game)
Superman (also incorrectly known as Superman 64) is a 1999 video game for the Nintendo 64, where the player controls Superman, a fictional superhero. Superman must save his friends from Lex Luthor, his archenemy. Most of the game is spent flying through rings. The game has received very negative reviews from critics and has been stated as "one of the worst games of all time" for "lame" weapons in the non-ring levels, overcomplicated controls, and bad graphics.
The player assumes the role of Superman who is challenged to complete many tasks and puzzles throughout the 14 levels in the game. Most of the levels in the game are restricted to two types of gameplay; in some levels, referred to as "Ride Levels" in the game's instruction manual, Superman is instructed to fly through a series of hoops by Lex Luthor; in between, he is also tasked to perform certain feats such as battling Luthor's minions, the Dark Shadows, and rescuing civilians from natural or artificial disasters, firstly stopping two cars from trapping civilians.
In other levels, referred to as "Maze Levels" in the game's instruction manual, Superman has found one of his friends from within one of Luthor's outposts, and must escape with them and defeat a boss. These levels are generally more rooted in action-adventure, and make great use of puzzle-solving. The game's "virtual Metropolis" in which these stages take place is filled with what the developers called "Kryptonite fog" in an apparent effort by Lex Luthor to diminish Superman's abilities (which is actually distance fog and is used as a technique to mask the game's poor draw distance).
The game also includes two multi-player modes (a racing mode and a battle mode) that can be played with up to four people. In the battle mode, players must defeat their opponents by throwing various weapons and items at them. In the racing mode, players control a spaceship and rings shoot from the backside of one opponent.
"Superman" was originally shown at the E3 in 1997. In interview before the game was released, Eric Caen, co-founder of Titus Software, stated they were attempting to create the first "super hero" based video game where players really behave as a super hero. After the N64 version's negative response, Titus decided to completely redesign "Superman" for the PlayStation. Unfortunately, Titus lost the rights from the Warner Bros. for the Superman License, resulting in its cancellation in 1999. Given an exclusive look at the game, playstationmuseum.com stated that they had expected the worst, but they were pleasantly surprised by the "high quality graphics and animation" and awarded the game a rating of 90%.
Superman has received very negative reviews from critics. On GameSpot, the game is rated a 1.3/10. On GameRankings Agreggation, it is "one of the worst games of all time" for "lame" weapons in the non-ring levels, overcomplicated controls, and bad graphics.
Æsir–Vanir War
In Norse mythology, the Æsir–Vanir War was a war that occurred between the Æsir and the Vanir, two groups of gods. The war ultimately resulted in the unification of the two tribes into a single tribe of gods. The war is an important event in Norse mythology. The two side eventually came to a truce by spitting into a bowl; the spit was mixed, and the god Kvasir was born. Kvasir was killed by dwarves for his blood.
Delisle scale
The Delisle scale is a scale to measure temperature. It was introduced by French astronomer Joseph-Nicolas Delisle in 1732. Delisle used a thermometer that worked with Mercury. The unit is abbreviated "De" or "D". 0°De is equal to the boiling point of water under normal pressure. Delisle then measured the volume change of the mercury. At the start, the Delisle scale had 2400 degrees. Josias Weitbrecht recalibrated the theromometer in 1738, so that the melting point of ice was taken into account. Ice melts at 150°De.
The Deslile scale counts downwards, from the boiling point to the melting point. It was widely used in Russia in the 19th century.
Wandering albatross
The wandering albatross is a large seabird of the family Diomedeidae. It is also called the snowy albatross or white-winged albatross. It is the largest member of the genus "Diomedea" (the great albatrosses) and has the largest wingspan of any living bird. It can have a wing-span of up to 11.5 feet (3.50 m). The IUCN says it is a vulnerable species.
Wandering albatross live together when breeding, which they do once every two years. They are monogamous, and usually mate for life. They can live for over 50 years, and adult mortality is only 5 to 7% a year (this is very low for birds).
They make many kinds of noises, such as screams, whistles, grunts and bill clapping. When they are looking for a mate, they spread their wings, wave their heads and tap their bills together. They feed at night on cephalopods, small fish, and crustaceans
Roman Kingdom
The Roman Kingdom () was the monarchical government of the city of Rome and its territories. No written records from that time survive. The histories about it were written during the Republic and Empire and are largely based on legend. Therefore, not much is certain about the history of the Roman Kingdom.
However, the history of the Roman Kingdom began with the city's founding, traditionally dated to 753 BC, and ended with the overthrow of the kings and the establishment of the Republic in about 509 BC.
What eventually became the Roman Empire began as settlements around the Palatine Hill along the river Tiber in central Italy. The river was navigable up to that place. The site also had a ford where the Tiber could be crossed. The Palatine Hill and hills surrounding it presented easily defensible positions in the wide fertile plain surrounding them. All these features contributed to the success of the city.