Astronomers have known for centuries that stars have different colors. When looking at an electromagnetic spectrum, ultraviolet waves are the shortest, and infrared are the longest. The visible spectrum has wavelengths between these two extremes.
Modern instruments can measure very precisely the color of a star. This allows astronomers to determine that star's temperature, because a hotter star's black-body radiation has shorter wavelengths. The hottest stars are blue and violet, then white, then yellow, and the coolest are red. Knowing the color and absolute magnitude, astronomers can place the star on the Hertzsprung-Russell diagram, and estimate its habitable zone and other facts about it.
For example, our Sun is white, and the Earth is the perfect distance away for life. If our Sun was a hotter, blue star, however, Earth would have to be much farther away or else it would be too hot to have water and sustain life.
List of U.S. states
This article lists the 50 states of the United States. It also lists their populations, the date they became a state or agreed to the United States Declaration of Independence, their total area, land area, water area, and the number of representatives in the United States House of Representatives.
Washington D.C., (Washington, District of Columbia) is a federal district and capital of the United States and is not considered a state. The United States also has sovereignty over 14 other territories. These are not included in this list.
"Click on any state to learn more about this state."
DUI
DUI may mean:
Drunk driving
Drunk driving (Drink driving in the UK and Australia) is the act of driving a motor vehicle (car, truck, etc.) while under the effects of alcohol. Drunk driving is illegal in most areas of the world. In some places, driving a motorless vehicle such as a bicycle while drunk is also illegal.
Most "areas that make laws" ("jurisdictions") started with DWI (driving while intoxicated) laws, banning just alcohol. Later, most changed them to DUI (driving under the influence) laws, adding other drugs to those banned while driving. The most common blood alcohol content (BAC) limit in the United States is 0.08% for the legal meaning of drunk. Only three states still use the more lax, original standard of 0.10%. Many jurisdictions add extra penalties (more jail time and/or a longer DUI program) in cases where the driver's BAC is over 0.20%.
The first place in the United States to adopt laws against drunk driving was the state of New York in 1910, with California (1911) and others doing the same later. Early laws simply banned driving while drunk, with no mention of what BAC was banned (which means how drunk the person is). The state of Georgia was one of the last states to make laws against drunk driving. One of the years with the most alcohol related crashes was 1982. The year 1982 had 26,173 alcohol related deaths due to drunk driving.
In the US, most of the laws were greatly tightened in the early 1980s, largely due to pressure from groups like Mothers Against Drunk Drivers (MADD) and Young Adults Educating Responsible Drinking.
Creative Commons
The Creative Commons is a non-profit organisation that tries to make creative work available for others to use and share.
Their website allows copyright holders to give some of their rights to any other people. They still keep some other rights. They do this through licenses and contracts. Some of these make the work public domain or open content. They do this because copyright law can stop people sharing information.
The project has different free licenses. A person who has copyright can choose which one they want to use when they publish their work. They also provide RDF/XML metadata. These say what the licenses are and make it easier to automatically sort out and find work that has these licenses. They also provide a 'Founder's Copyright' contract. This aims to give the same effects as the original US Copyright did.
Creative Commons was officially started in 2001.
Lawrence Lessig is the founder and chairman of Creative Commons. Lessig started it as a way of reaching the goals of his Supreme Court case, Eldred v. Ashcroft.
The "iCommons" (International Commons) is one of the Creative Commons projects. They improve the wording of the licenses and make them usable in other countries. The first ones dealt with US law only. As of February 4, 2004, Canada, the People's Republic of China, Finland, France, Italy, Japan, the Republic of China (Taiwan), the Republic of Ireland, and the United Kingdom have joined this project.
Projects that use Creative Commons licenses include LOCA Records, Magnatune, Opsound, Opcopy, Wikitravel, iRATE radio and the fiction of Cory Doctorow.
HTML
Hyper Text Markup Language (HTML) is a markup language for creating a webpage. In easier words, HTML is a kind of programming language that can make a new webpage. Webpages are usually viewed in a web browser. They can include writing, links, pictures, and even sound and video. HTML is used to mark and describe each of these kinds of content so the web browser can display them correctly. HTML also adds meta information to a webpage. Meta information is usually not shown by web browsers and is data "about" the web page, e.g., the name of the person who created the page. Cascading Style Sheets (CSS) is used to style HTML elements while JavaScript is used for website behavior and also changing the HTML and CSS.
HTML is made by the World Wide Web Consortium (W3C). There are several versions of HTML. As of September 2018, the current standard of HTML is dubbed HTML 5 and is specifically at version 5.2.
HTML uses "elements" to let the browser know how a webpage is made of. Elements are shown as "tags" in the code, written with angle brackets: . Tags "usually" come in pairs: an opening tag defines the start of a block of content and a closing tag defines the end of that block of content. There are many different kinds of tags, and each one has a different purpose. See Basic HTML Tags below for tag examples.
Some tags only work in certain browsers. For example, the codice_1 tag, which is used to make something appear when the person presses the right button of the mouse, only works on the Mozilla Firefox browser. Other browsers simply ignore this tag and display the writing normally. Many web page creators avoid using these "non-standard" tags because they want their pages to look the same with all browsers.
Here is an example page in HTML with "Hello world!".
<!DOCTYPE html>
<html>
</html>
The text between and describes the web page, and the text between and is the page content. defines the browser page title.
Here are some example HTML tags:
Leg
A leg is something used to support things; to hold them up. Birds and humans have two legs. Some objects, for example tables and chairs, also have legs to hold them up.
Animals normally have 2 or 4 legs (vertebrates, which are animals with a backbone), or 6, 8, or 12 (arthropods, for example insects and spiders). Centipedes and millipedes have a lot more legs, but not exactly a hundred or a thousand as their names make people who do not know them think. Humans have 2 legs, complete with feet.
"Biped" is an animal with two legs and "quadruped" is an animal with four legs.
People also use the word "leg" in idioms, for example:
Economic sector
One method is by the three-sector hypothesis:
Core Industries
Eight Core Industries are Electricity, steel, refinery products, crude oil, coal, cement, natural gas and fertilizers. The Index of Eight Core Industries is a monthly production index, which is also considered as a lead indicator of the monthly industrial performance. The Index of Eight Core Industries is compiled based on the monthly production information received from the Source Agencies.
Pink Collar Worker
Sunrise Industry
Classification of Central Public Sector Enterprises (CPSEs)
PPP (Public Private Partnership)
Yellow