J
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J-aerial
A J-aerial is a dipole type aerial consisting of a three-quarter wavelength
vertical portion and a quarter-wavelength portion parallel to it, the feeding
points being equidistant from the junction.
Jacobins
The Jacobins were a radical French political group. They were originally called
the Club Breton when they were formed in Versailles, but on moving to Paris in
1789 were renamed the Jacobins. After successive purges they became the
instrument of the Reign of Terror under Robespierre's dictatorship.
Jah
Jah is the Jamaican, and more especially the Rastafarian, name for god.
Jansky
The Jansky is the unit of radiation received from outer space, used in radio
astronomy. It is equal to 10-26 watts per square meter per hertz, and is named
after the USA engineer Karl Jansky.
January
January derives its name from Janus, an early Roman god. January was added to
the Roman calendar by Numar in 713 BC, he placed it about the winter solstice
and made it the first month because Janus was supposed to preside over the
beginnings of all business. In 1751 the legal year in England was ordered to
begin on January 1st instead of 25th March.
Jass
Jass is a collection of Swiss card games. Many of the most popular card games
in Switzerland, especially in the German speaking cantons, belong to the Jass
group, and are played with characteristic Swiss cards, which have come to be
known as Jass cards. All Jass games are played counter-clockwise. The cards are
played in tricks. As usual each trick is won by the highest trump in it, or if
no trump is played, by the highest card of the suit led. The winner of each
trick leads to the next. In many games the player to the right of the dealer
leads to the first trick, but in some games with bidding the declarer leads
first.
JavaScript
JavaScript is an interpreted computer language supported by some client Web
browsers. It was first introduced by Netscape in their Navigator Web browser.
It allows embed commands in an HTML page which are loaded by the client Web
browser as a part of the HTML document. These commands can be triggered when
the user clicks on page items, manipulates gadgets and fields in an HTML form,
or moves through the page history list.
Javelin Plus
Javelin Plus is a financial modelling tool designed for the development and
analysis of business planning models. Because Javelin Plus is faster and, in
many ways, easier to use than a spreadsheet, it appeals to a broad base of
business analysts and financial planning professionals. Javelin Plus's
understanding of time periods such as weeks, months, quarters, and years makes
it helpful in creating time-series models. It automatically calculates monthly
figures from input data. Javelin Plus minimises errors that are difficult to
spot in complicated financial models by using formula-name references rather
than cell references. Javelin Plus allows you to construct a model by defining
relationships rather than by tediously defining a series of cells. Data is
stored in an information base instead of a spreadsheet, so you can create the
relationships between the different values and show them in several views
rather than in a simple, flat matrix (although that is one of the options).
Javelin Plus makes it easy to do forecasting because you can actually draw a
graph in the quick graph view, and the product will insert the respective
numbers into that variable's data table (another view). For example, if you
create a variable called East which is equal to the total sales of Boston, New
York, and Toronto and a variable called First Quarter equal to January,
February, and March, when you call for East and First Quarter, Javelin Plus
automatically adds the data associated with the three cities for the first
three months. One of the most interesting aspects of Javelin Plus is the
snap-in building block capability which allows users to develop fully
integrated add-in tools. Snap-ins are open-architecture design features,
similar to templates, that allow you to create unlimited applications which can
be accessed as needed. Javelin Plus allows text and date variables to be used
in modelling as if they were numeric variables. This means you can base
calculations in models on
umeric data. You can perform true date arithmetic which is especially useful
for querying in models that include databases. Database functions such as
sorting and cross-tabulation are included. Javelin Plus also has improved
worksheet-printing options for the worksheet view, including user-specified
page breaks, margins, setup strings, and printer fonts. Graph styles include
high-low-close, mixed line/bar, and XY plots of up to seven variables.
Jazz
Jazz is a lively type of music which originated in America amongst the black
community.
Jesuit's Bark
Jesuit's Bark (fever-wood) is the bark of the cinchona or chinchona tree. Its
existence was brought to Europeans by a Jesuit about 1535 but it was not
generally used until 1633 when the wife of the viceroy of Peru was cured of a
fever with it. She brought it to Europe in 1639 and it came into general use in
1680. The active constituent of Jesuit's Bark is quinine.
Jetsam
Jetsam are goods thrown overboard in a storm, or after a shipwreck, and cast
upon the shore.
Johnson Noise
In electronics, Johnson Noise is unwanted voltage variations which manifest in
a receiver as noise and in other types of apparatus as spurious signals in the
output. Johnson Noise is due to the random motion of electrons in a conductor,
which increases with temperature.
Jota
The jota is the national dance of Aragon.
Judo
Judo is a form of Japanese wrestling.
Judy
Judy is an English slang expression for a woman.
Jujitsu
Jujitsu is a Japanese form of self defence.
Jurassic
The Jurassic was the tenth geological period, 135,000,000 years ago. The first
mammals evolved.
Jute
Jute is a fibre obtained from plants and used for making sacks.
