The Earth rotates from the west towards the east, and the Coriolis effect becomes more intense toward the poles. Because of this, gyres form strong currents on the western side of oceans, so they are pushed against the eastern coast of continents. The vorticity (the strength of the torque force) is balanced out by frictional surface currents, which normally act against the spin of the water. However, in the middle of the ocean, the effects of friction are very weak.
The term "gyre" can be used to mean any type of vortex in the air or the sea, but it is most used in oceanography for the major ocean current systems.
These are the five largest gyres:
Tropical gyres tend to be mostly east-west with minor north-south extent.
The centre of a subtropical gyre is a high pressure area, which the ocean moves around. The high pressure in the centre is due to the westerly winds on the northern side of the gyre and easterly winds on the southern side of the gyre. These cause frictional surface currents towards the latitude at the centre of the gyre.
Subpolar gyres form at high latitudes (around 60°). The ocean moves around a low pressure area. Surface currents generally move outward from the centre of the system.
Striptease (movie)
Striptease is a 1996 comedy-drama movie. "Striptease" is based on a novel by the same name, which was released three years prior to the movie. The stories in this movie are about an exotic dancer who gets involved in serious child custody matters and corrupt politics. Demi Moore is exotic dancer Erin Grant, who was earlier a Federal Bureau of Investigation secretary. Also in the movie is Burt Reynolds as Congressman David Dildeck and Rumer Willis (Moore's real-life daughter) as Erin's daughter Angela. "Striptease" got negative reviews similar to "Showgirls" the previous year. Unlike "Striptease", however, "Showgirls" became a strong cult favorite within one decade after its release.
Goderich, Ontario
Goderich is a town in the Ontario, Canada. It is the county seat of Huron County. The town was founded by William Dunlop in 1827. It is named after Frederick John Robinson, 1st Viscount Goderich. The town was officially incorporated in 1850.
The population of Goderich is 7,521 in 2011. The area of the town is 7.91 square kilometers.
Goderich is located on the eastern shore of Lake Huron, at the mouth of the Maitland River. Queen Elizabeth II said that Goderich was "the prettiest town in Canada." But no reigning monarch has ever visited the town. Tourism is important to the local economy. Tourists come for the sunsets over the lake.
Goderich contains many places that are listed on the Canadian Register of Historic Places (CRHP). The Huron Historic Gaol is a National Historic Site. It served as the prison of Huron County from its opening in 1842 until 1972.
Davy lamp
The Davy lamp is a safety lamp for use in mines. It was invented in 1815 by Sir Humphry Davy.
It is a wick lamp with the flame enclosed inside a mesh screen. It was created for use in coal mines, where explosions happened in the presence of methane and other flammable gases. Those gases, called "firedamp" or "minedamp", did not ignite a shielded flame. The wire mesh put flames out.
The lamp also warned the men of carbon dioxide or methane. The flame would burn higher, and with a blue tinge. Modern versions of the lamp are still used to test mine gases, but the light for working is now electric.
Substance abuse
Substance abuse, or drug abuse, happens when a person uses a drug over and over again, in ways that hurt their health. The person is using the drug to change their mood or to feel better, not for any healthy reason. Sometimes when the person uses the drug for a long time, they will start to act differently. Some of the drugs are illegal to have or use, or can have certain limits that the person does not follow. Someone who thinks that they need a drug is called an addict.
Substance abuse can have different symptoms in different people. “Drug abuse” is not used in the DSM or ICD. In the DSM, the term “substance abuse” is used instead to mean the misuse of one of ten different types of drugs.  A person can also become dependent on drugs. Repetitive use of a drug can cause dependence as well as tolerance. Tolerance happens when it takes more of a drug to produce the same effect than a previous time.
The term “drug misuse” is sometimes used when the drug being used is a prescription medication that are classified as sedatives (medicines that make someone calm), anxiolytics (medicines that make someone less worried or anxious), analgesics (medicines that reduce pain), or stimulants (medicines that give someone more energy). Someone who abuses there drugs may have to illegally buy them from someone who gets them from a doctor.
Not everyone agrees on the definition of substance abuse. Different countries have different rules for what is a drug and what drugs are illegal. People also do not agree about what is abuse. In most Western countries, one glass of wine is acceptable, but drinking more than one bottle at once is abuse. To some people, any drinking can be seen as abuse. In the United States, any use of marijuana
In many cases, when a person is using drugs, their thinking and behaviors change. Sometimes, they commit crimes while using drugs. They may do things that are not safe, like drive a car while drunk. When people abuse drugs over a longer time, their personalities often change as well. The people who abuse drugs are often addicted. Since many of these drugs are illegal, very often drug users have problems with the law.
There are two major ideas about why people abuse drugs. Many people believe that both can be true for different cases or with different people, which is one reason why different treatments work better or worse for different people.
One idea about why people use drugs is because of their genes. When a person's parents or grandparents have been addicted to drugs, alcohol, cigarettes or even coffee, the same genes that made them become addicted could be passed down to any of their children. When someone is born with the genes that increase addiction, it causes their brain and body to become dependent on drugs very quickly. But even if a person's genes make it easier for them to become addicted to drugs, that person still need to try a drug first, before they can become addicted on it. This idea also means that different people can have harder or easier time stopping drugs after they are already addicted.
The second major idea is that drug use is a habit that becomes harmful. It is always very hard to stop bad habits, but in this idea, drugs are one of the strongest bad habits because drugs cause so many changes in the brain. Each time a person uses drugs, the parts of the brain that think about drugs become stronger and stronger. In this idea, if a person likes drugs, that person starts to plan their day around using drugs. To stop a habit as strong as drug use, many other things about that person's life must also change. This idea also means that, the longer a person takes drugs, the harder it is for them to stop taking drugs.
People abuse drugs in many different ways, including:
Some of the most commonly abused "illegal drugs" are:
Some of the most commonly abused "legal drugs and medicines" are:
People who abuse drugs have a high rate of suicide. This is because of the changes in the brain caused by drugs, both when they are being used and the changes they cause over time. Another cause is the loss of family and friends because of the drug abuse. In the United States, about 30% of all people who perform suicide have abused alcohol at some point.
This table explains more about how some commonly abused drugs relate to depression and suicide: