What happened 1839 AD

In the 1830s, the English scientist William Henry Fox Talbot independently invented a process to fix camera images using silver salts. Although dismayed that Daguerre had beaten him to the announcement of photography, on January 31, 1839, he submitted a pamphlet to the Royal Institution entitled Some Account of the Art of Photogenic Drawing, which was the first published description of photography.

After meeting and staying with Nathan and Mary Johnson, they adopted Douglass as their married name: Douglass had grown up using his mother's surname of Bailey; after escaping slavery he had changed his surname first to Stanley and then to Johnson. In New Bedford, the latter was such a common name that he wanted one that was more distinctive, and asked Nathan Johnson to choose a suitable surname. Nathan suggested "Douglass," after having read the poem "The Lady of the Lake" by Walter Scott, in which two of the principal characters have the surname "Douglas".

In 1839 Charles Barry toured Britain, looking at quarries and buildings, with a committee which included two leading geologists and a stonecarver.

In 1839, Truth's son Peter took a job on a whaling ship called the Zone of Nantucket. From 1840 to 1841, she received three letters from him, though in his third letter he told her he had sent five. Peter said he also never received any of her letters. When the ship returned to port in 1842, Peter was not on board and Truth never heard from him again.

The first photographic camera developed for commercial manufacture was a daguerreotype camera, built by Alphonse Giroux in 1839. Giroux signed a contract with Daguerre and Isidore Niépce to produce the cameras in France, with each device and accessories costing 400 francs. The camera was a double-box design, with a landscape lens fitted to the outer box, and a holder for ground glass focusing screen and image plate on the inner box. By sliding the inner box, objects at various distances could be brought to as sharp a focus as desired. After a satisfactory image had been focused on the screen, the screen was replaced with a sensitized plate. A knurled wheel controlled a copper flap in front of the lens, which functioned as a shutter. The early daguerreotype cameras required long exposure times, which in 1839 could be from 5 to 30 minutes.

The Porte felt strong enough to renew the struggle, and war broke out once more. Ibrahim won his last victory for his father at Nezib on June 24, 1839.

The Battle of Nezib was fought on 24 June 1839 between Egypt and the Ottoman Empire. The Egyptians were led by Ibrahim Pasha, while the Ottomans were led by Hafiz Osman Pasha.

When Mahmud II ordered his forces to advance on the Syrian frontier, Ibrahim attacked and destroyed them at the Battle of Nezib (24 June 1839) near Urfa. In an echo of the Battle of Konya, Constantinople was again left vulnerable to Ali's forces. A further blow to the Ottomans was the defection of their fleet to Muhammad Ali. Mahmud II died almost immediately after the battle took place and was succeeded by sixteen-year-old Abdülmecid. At this point, Ali and Ibrahim began to argue about which course to follow; Ibrahim favored conquering the Ottoman capital and demanding the imperial seat while Muhammad Ali was inclined simply to demand numerous concessions of territory and political autonomy for himself and his family.

In 1839, The first mechanically-propelled, two-wheeled vehicle may have been built by Kirkpatrick MacMillan, a Scottish blacksmith, although the claim is often disputed. A nephew later claimed that his uncle developed a rear-wheel-drive design using mid-mounted treadles connected by rods to a rear crank, similar to the transmission of a steam locomotive.

In 1839, American traveler and writer John Lloyd Stephens set out to visit a number of Maya sites with English architect and draftsman Frederick Catherwood.

In 1839, the Sublime Porte attempted to take back what it lost to the de facto autonomous, but de jure still Ottoman Eyalet of Egypt, but its forces were initially defeated, which led to the Oriental Crisis of 1840. Muhammad Ali Pasha had close relations with France, and the prospect of him becoming the Sultan of Egypt was widely viewed as putting the entire Levant into the French sphere of influence.

On 25 November 1839, an enormous cyclone caused a 40-foot storm surge (unconfirmed) that hit Coringa, Andhra Pradesh, wiped out the harbor city, destroyed vessels in its bay, and killed 300,000 people. Survivors never entirely rebuilt the city.

Sublime Porte had proved itself incapable of defeating Muhammad Ali Pasha, the British Empire and Austrian Empire provided military assistance, and the second Egyptian–Ottoman War (1839–1841) ended with Ottoman victory and the restoration of Ottoman suzerainty over Egypt Eyalet and the Levant.