On the fo'castle of H.M.S. Terrible. Hong Kong, China

Stereographs are devices capable of building a three-dimensional​ image out of two photographs that have about two and a half inches difference between them so that it could imitate the two eyes’ real field of view. Combining these images into a single one with the help of stereoscope, a person can experience the illusion of the image’s depth. Stereoscope uses the same principle as in human binocular vision. Our eyes are separated by about two inches, so we see everything from two different angles. When the brain combined those views in a single picture, we get the spatial depth and dimension. Stereographs were extremely popular between 1850 and 1930 all around the world. Millions of stereographs were made during that time. There was a broad range of themes: landscape, travel, historical moments, nature disasters, architecture and many others. Nowadays, simply launch this collection full screen and put your mobile device in Google Cardboard Viewer.

In the 19th century, British trade of Chinese commodities like tea, silk, and porcelain was high but Chinese interest in European manufactured goods was insignificant so that Chinese goods could only be bought with precious metals. To reduce the trade imbalance, the British sold large amounts of Indian opium to China. In 1839, the Daoguang Emperor rejected proposals to legalize and tax opium and ordered imperial commissioner Lin Zexu to eradicate the opium trade. The commissioner destroyed opium stockpiles and halted all foreign trade, triggering a British military response and the First Opium War. The Qing surrendered early in the war and ceded Hong Kong Island to the United Kingdom in 1842. Piracy, disease, and hostile Qing policies initially prevented the government from attracting commerce. Conditions on the island improved during the Taiping Rebellion in the 1850s, when many Chinese refugees, including wealthy merchants, fled mainland turbulence and settled in the colony. Further tensions between the British and Qing over the opium trade escalated into the Second Opium War. The Qing were again defeated, and forced to give up the Kowloon Peninsula and Stonecutter's Island in the Convention of Peking. By the end of this war, Hong Kong had evolved from a transient colonial outpost into a major port. The colony was further expanded in 1898 when Britain obtained a 99-year lease of the New Territories. Hong Kong was transferred to China on 1 July 1997, after 156 years of British rule.

Throughout the 18th and 19th centuries, the Royal Navy was the largest navy in the world and maintained ascendancy over its rivals through superiority in financing, tactics, training, organization, hygiene, dockyard facilities, logistical support, and warship design and construction. The French Revolutionary Wars and Napoleonic Wars saw the Royal Navy reach a peak of efficiency, dominating the navies of all adversaries, which spent most of the war blockaded in ports. Between 1815 and 1914, the Navy saw little serious action, owing to the absence of any opponent strong enough to challenge its dominance. Due to British leadership in the Industrial Revolution, unparalleled shipbuilding capacity, and financial resources, British naval warfare underwent a comprehensive transformation, brought by steam propulsion, metal ship construction, and explosive munitions. In 1859, the fleet was estimated to number about 1000 vessels. In 1889, Parliament passed the Naval Defence Act, which formally adopted the 'two-power standard', which stipulated that the Royal Navy should maintain a number of battleships at least equal to the combined strength of the next two largest navies. During the First World War, the British advantage proved insurmountable, leading the German navy to abandon any attempt to challenge British dominance. The Royal Navy had established a blockade of Germany, closed off access to the English Channel, and mined the North Sea. During the Dardanelles Campaign against the Ottoman Empire in 1915, the Royal Navy suffered heavy losses during an attempt to break through the system of minefields and shore batteries defending the straits. The most serious danger to the British Navy and merchant fleet came from the attacks of German U-boats. Unrestricted submarine warfare raised the prospect of Britain being starved into submission in 1917. The introduction of convoys brought the U-boat threat under control. In the inter-war period, the Washington and London Naval Treaties imposed the scrapping of some capital ships and limitations on new construction. The Royal Navy was stripped of much of its power. The re-armament of the Royal Navy restarted in 1932 - with the construction of new battleships and first purpose-built aircraft carriers. At the start of World War II in 1939, the Royal Navy was the largest in the world, with over 1,400 vessels, including 7 aircraft carriers, 15 battleships and battlecruisers. The Royal Navy suffered heavy losses in the first two years of the war with the most critical struggle of the Atlantic defending Britain's vital commercial supply lines against the U-boat attacks. The Navy was vital in guarding the sea lanes that enabled British forces to fight in North Africa, the Mediterranean, and the Far East. Naval supremacy was essential to amphibious operations such as the invasions of Northwest Africa, Sicily, Italy, and Normandy. By the end of the war the Royal Navy comprised over 4,800 ships, and was the second-largest fleet in the world. After the Second World War, the increasingly powerful United States Navy took on the former role of the Royal Navy as a global naval power and police force of the sea. The decline of the British Empire and the economic hardships forced the reduction in the size and capability of the Royal Navy. One of the most important operations conducted by the Royal Navy after the Second World War was the 1982 Falkland Islands War. Despite losing four naval ships, the Royal Navy fought and won a war over 8,000 miles (12,000 km) from Great Britain. The Royal Navy also took part in the Gulf War, the Kosovo conflict, the Afghanistan Campaign, and the 2003 invasion of Iraq.

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