Search results
Results From The WOW.Com Content Network
Though rare-earth elements are technically relatively plentiful in the entire Earth's crust (cerium being the 25th-most-abundant element at 68 parts per million, more abundant than copper), in practice this is spread thin across trace impurities, so to obtain rare earths at usable purity requires processing enormous amounts of raw ore at great ...
William Howe, 5th Viscount Howe, in a letter to William Legge, 2nd Earl of Dartmouth, about the British army's decision to leave Boston, dated March 21, 1776. Many crucial events of the American Revolution occurred in or near Boston. The then-town's mob presence, along with the colonists' growing lack of faith in either Britain or its Parliament, fostered a revolutionary spirit there. When the ...
In power engineering, a single-line diagram ( SLD ), also sometimes called one-line diagram, is a simplest symbolic representation of an electric power system. [ 1][ 2] A single line in the diagram typically corresponds to more than one physical conductor: in a direct current system the line includes the supply and return paths, in a three ...
A country's gross domestic product (GDP) at purchasing power parity (PPP) per capita is the PPP value of all final goods and services produced within an economy in a given year, divided by the average (or mid-year) population for the same year. This is similar to nominal GDP per capita but adjusted for the cost of living in each country.
The Human Development Report includes data for all 193 member states of the United Nations, [ 16] as well as Hong Kong SAR and the State of Palestine. However, the Human Development Index is not calculated for two UN member states: DPR Korea (North Korea) and Monaco, only some components of the index are calculated for these two countries.
e. AC power plugs and sockets connect devices to mains electricity to supply them with electrical power. A plug is the connector attached to an electrically-operated device, often via a cable. A socket (also known as a receptacle or outlet) is fixed in place, often on the internal walls of buildings, and is connected to an AC electrical circuit.
List of colors: A–F. Colors are an important part of visual arts, fashion, interior design, and many other fields and disciplines. The following is a list of colors. A number of the color swatches below are taken from domain-specific naming schemes such as X11 or HTML4. RGB values are given for each swatch because such standards are defined ...
Samnite Wars. 33,500+. 343 BC–290 BC. Roman Republic vs. Samnites. Italy. Number given is the sum of all deaths in battle recorded by Roman writers during this time period, does not take into account civilian deaths, the actual number may be much greater. Wars of Alexander the Great. 142,000+. 336 BC–323 BC.