In the U.S., chocolate decadence cakes were popular in the 1980s; in the 1990s, single-serve chocolate cakes with liquid chocolate centers were popular.
Ten Who Dared
Ten Who Dared is a movie made by Disney in 1960. It tells the real story of an officer of the United States Army called John Wesley Powell who was the first to travel up the Colorado river with other nine men to make a map of the region, and the dangers they had to face in their trip.
Some people say it is one of the worst movies made by Disney.
Imaginary unit
In math, imaginary unit or formula_1, is a number value that only exists outside of real numbers and is used in algebra. Though imaginary numbers can be used to solve a lot of mathematical problems, they cannot be represented by an amount of real life objects.
Imaginary units were invented to answer the polynomial equation formula_2, which normally has no solution (see below). The term "imaginary" comes from by René Descartes and was meant to be insulting as, like zero and negative numbers at other times in history, imaginary numbers were thought to be useless as they are not natural. It wasn't until later centuries that the work of mathematicians like Leonhard Euler, Augustin-Louis Cauchy and Carl Friedrich Gauss would prove that imaginary numbers were very important for some areas of algebra.
A common rule for multiplying and dividing numbers is that if the signs are different then the result is negative (e.g. formula_3), but if both numbers have the same sign then the result will be positive (e.g. formula_4 and formula_5). However, this leads to problems with square root numbers of negatives, as two negative numbers will always make a positive number:
To fill in this value gap the imaginary unit was made, which is defined as formula_10 and formula_11. Using imaginary numbers we can solve our last example:
It is sometimes assumed that one must create another number to show the square roots of formula_1, but that is not needed. The square roots of formula_1 can be written as: formula_18, a result which can be shown as follows:
The powers of formula_1 or formula_1 follow a regular and predictable pattern:
As shown, each time we multiply by another formula_1 the values are formula_34 and then repeat.
Phycology
Phycology (or algology), a part of botany, is the study of algae. Algae are important as primary producers in aquatic ecosystems. Most algae are eukaryotic, photosynthetic organisms that live in a wet environment. They are different from the higher plants by a lack of "normal" roots, stems or leaves. Many types have one cell and are very small or microscopic (including plankton and other microalgae); many others have many cells; some of these are very big, like seaweeds such as kelp and "Sargassum".
Phycology includes the study of prokaryotic forms known as blue-green algae or cyanobacteria. Some microscopic algae are also in lichens.
A phycologist is a person who studies phycology...
Snorkeling
Snorkeling is swimming while using a tube to breathe underwater. Snorkeling is a very popular activity, particularly in places with clear, calm, warm oceans. It allows people to see underwater life in a natural setting, without the complicated equipment and training required for scuba diving.
Generally, people snorkel in shallow reefs ranging from sea level to 4 meters (13 feet) deep. Snorkelers can also explore deep water reefs. However, to see deeper reefs, a snorkeler has to hold their breath and dive down to the reef to see it. This kind of snorkeling takes more skill and fitness than shallow water snorkeling. It is also more dangerous than shallow water snorkeling.
Snorkelers use masks so they can see underwater. This allows them to see fish, coral reefs, and other kinds of sea life.
Man has always been interested by what is under the ocean. Evidence shows that people have been free diving for at least 5,000 years. The earliest known free divers were sponge farmers in Crete, who lived around 3000 B.C.E. These farmers used free diving to collect underwater sponges. They used hollow reeds like modern snorkels, to allow them to breathe while underwater.
Snorkelers use three basic pieces of equipment:
Snorkeling is swimming on the surface of the water, with the head and nose under the water, using a diving mask, snorkel, and diving fins. Scuba diving is swimming with the whole body underwater. Scuba divers breathe through an oxygen tank, which allows them to breathe underwater for long periods at a time. Scuba divers also wear a tight diving suit, a diving mask, and diving fins.
Before a person can scuba dive, they have to get training how to use the breathing equipment and dive to deep waters. Snorkeling does not require any training. People who cannot swim can still snorkel if they use a life jacket to keep them floating on the water.
Kelly Tarlton's Antarctic Encounter and Underwater World
Kelly Tarlton's Antarctic Encounter and Underwater World is an aquarium in Auckland, New Zealand. It is all underground and within the walls of Auckland City's sewage holding tanks, unused since 1961. It opened on January 25 1985.
Kelly Tarlton, an avid diver, treasure hunter and undersea explorer, was responsible for the Underwater World concept and construction.
Construction took 10 months and cost $3 million. Kelly Tarlton died suddenly of a heart attack on March 17, 1985, seven weeks after the Underwater World opened.
Large sharks, stingrays and 1500 fish of forty different species may be viewed through a 114 metre-long underwater plexiglass tunnel in a figure-of-eight shape. The plexiglass is 7 centimetres thick.
List of cat breeds
This page lists breeds of domestic cats. The list includes breeds that are old traditional breeds, and also rare breeds or new breeds that are still being developed. Please see individual articles for more information.
Grave (mass)
Grave was the word that was used to describe mass before the word "kilogram" was introduced. "Grave" comes from the word "gravity" and was first used in 1793 in France. The name "kilogram" was introduced in 1795 but was not the official word for mass until 1875.
In order to have full consistency in the International System of Units (SI), many people think that the kilogram should be called something different. Using the word "kilogram" creates a problem because it is a base unit that has the prefix "kilo" already in its name. To fix the problem, some people have suggested using the word "grave" again.
The Smiths
The Smiths were an English rock band from Manchester. They formed in 1982 and split up in 1987. They released four studio albums. The band consisted of Morrissey (singing), Johnny Marr (guitar), Andy Rourke (bass) and Mike Joyce (drums). Critics have called them the most important alternative rock band to emerge from the British independent music scene of the 1980s. "Q" magazine writer Simon Goddard wrote that The Smiths were the one truly important group of the 1980s, "the most influential British guitar group of the decade" and the first independent group to become successful in the main music scene.
The band was based on the songwriting partnership of Morrissey and Marr. They signed to the independent record label Rough Trade Records. On this, they released four studio albums: "The Smiths (1984), "Meat Is Murder" (1985), "The Queen Is Dead" (1986) and "Strangeways, Here We Come" (1987). They have also released several compilations, and many singles that were not released on any of their studio albums.
The Smiths had several singles reach the UK top twenty. All four of their albums reached the UK top five, including one which topped the charts. They won a large following of fans. The band had limited commercial success outside the UK while they were still together. The band broke up in 1987 and have refused several offers to reunite.