Lethal Injection happens to be the most common out of all the death penalties, though it is not civil at all. It seen at quick and painless. The criminal is injected with three drug: 5g Pentothol (sodium thiopental), which is intended to induce a coma, 100mg Pavulon (pancuronium bromide), which causes paralysis, and 100 mEq potassium chloride, which stops the heart. (All in sequence).
The gas chamber, though very similar to lethal injection, was also a very quick and painless way they use to kill criminals. It was usually advertised as the most humane and efficient way to die. The prisoner was usually strapped down within the chamber, and the executioner pulled a lever down on the outside of the chamber releasing potassium cyanide pellets into a vat of sulfuric acid, which floods the chamber with deadly hydrogen cyanide gas.
The most popular of the eight was the electri chair. This happened to be a very painful way to die. Alot of people have recieved the chair this method has decline drastically since the creation of lethal injection. The prisoner is strapped down, shaved bald, and fitted with electrodes connecting to their head and foot. A switch is pull relasgin 2,000 volts through the prisoners body.
The firing squad is the least expensives of the eight ways of execution, and the most humane. The prisoner is placed in a chair strapped down with five sharpshooter are set up aiming their weapon at their heart. The all all and pull the trigger at on, though one of the guns is loaded with a blank round so that the shooters have the relief that there is a 20 percent chance they didnt murder the convict.
Hanging was seen as a way of justice back in the day. The prisoner stand above a trap door with a rope around its neck in a "Hangman's noose". The lever is pull upon, dropping the prisoner, breaking thier neck instantly.
Stoning was the most extreme, time consuming and painful ways to die. In this, the prisoner is buried from a certain point of thier body (depending on the gender) and then is pelted with stones by a group of volunteers till battered to death. This execution take about 10- 20 minutes making it the longest and most painful way to die by capital punishment.
Beheadings are the most volgure of the eight ways to die. It quick, though gruesome. The prisoner is tied down, forced on knees and then beheaded by executioner by way of sword or knife.
Crucification is by far has the longest process of the eight and is pure torture. The prisoner is lifted from the ground and restrained at the arms, and left there to hang until the person get tired begins to fall forward and suffocates due to constricting of the lungs.
As you see the eight ways to die have changes drastically over the time periods. Though capital punishment has become les popular today, the death penalty isnt as active as it use to be though that still hasnt stop anything.
References:
Head, T. (n.d.). Types of execution. Retrieved from http://civilliberty.about.com/od/capitalpunishment/ig/Types-of-Executions