Samuel Colt in the context of Colt's Manufacturing Company

Scientific American, informally abbreviated SciAm or sometimes SA, is an American popular science magazine. Many scientists, including Albert Einstein and Nikola Tesla, have contributed articles to it, with more than 150 Nobel Prize-winners having been featured since its inception.

In print since 1845, it is the oldest continuously published magazine in the United States. Scientific American is owned by Springer Nature, which is a subsidiary of Holtzbrinck Publishing Group.

A handgun is a firearm designed to be usable with only one hand. It is distinguished from a long barreled gun (i.e., carbine, rifle, shotgun, submachine gun, or machine gun) which typically is intended to be held by both hands and braced against the shoulder. Handguns have shorter effective ranges compared to long guns, and are much harder to shoot accurately. While most early handguns are single-shot pistols, the two most common types of handguns used in modern times are revolvers and semi-automatic pistols.

Before commercial mass production, handguns were often considered a badge of office — comparable to a ceremonial sword – as they had limited utility and were more expensive than the long barreled guns of the era. In 1836, Samuel Colt patented the Colt Paterson, the first practical mass-produced revolver, which was capable of firing five shots in rapid succession and quickly became a popular personal weapon, giving rise to the saying, "God created men, but Colt made them equal."

The Great Exhibition of the Works of Industry of All Nations, also known as the Great Exhibition or the Crystal Palace Exhibition (in reference to the temporary structure in which it was held), was an international exhibition that took place in Hyde Park, London, from 1 May to 15 October 1851. It was the first in a series of world's fairs, exhibitions of culture and industry that became popular in the 19th century. The event was organised by Henry Cole and Albert, Prince Consort of Victoria, Queen of the United Kingdom.

Famous people of the time attended the Great Exhibition, including Charles Darwin, Karl Marx, Michael Faraday (who assisted with the planning and judging of exhibits), Samuel Colt, members of the Orléanist royal family and the writers Charlotte Brontë, Charles Dickens, Lewis Carroll, George Eliot, Alfred Tennyson, and William Makepeace Thackeray. The future Arts and Crafts proponent William Morris, then a teenager, later said he refused to attend the Exhibition on the grounds of taste. Exhibits showcased include the first public flush toilets invented by George Jennings.

The Colt Paterson revolver was the first commercial repeating firearm employing a revolving cylinder with multiple chambers aligned with a single, stationary barrel. Its design was patented by Samuel Colt on February 25, 1836, in the United States, England and France, and it derived its name from being produced in Paterson, New Jersey. Initially this 5 shot revolver was produced in .28 caliber, with a .36 caliber model following a year later. As originally designed and produced, no loading lever was included with the revolver; a user had to partially disassemble the revolver to re-load it. Starting in 1839, however, a reloading lever and a capping window were incorporated into the design, allowing reloading without disassembly. This loading lever and capping window design change was also incorporated after the fact into most Colt Paterson revolvers that had been produced from 1836 until 1839. Unlike later revolvers, a folding trigger was incorporated into the Colt Paterson. The trigger became visible only upon cocking the hammer.

A subsequent patent renewal in 1849, and aggressive litigation against infringements, gave Colt a domestic monopoly on revolver development until the mid 1850s.