Subsequent formalizations were framed as attempts to define " effective calculability " or " effective method "; those formalizations included the Gödel – Herbrand – Kleene recursive functions of 1930, 1934 and 1935, Alonzo Church's lambda calculus of 1936, Emil Post's " Formulation 1 " of 1936, and Alan Turing's Turing machines of 1936 – 7 and 1939.

* 1930 – Manuel Neri, American artist

* 1930 – Michał Życzkowski, Polish technician ( d. 2006 )

* 1930 – Félix Guattari, French philosopher and theorist ( d. 1992 )

* 1930 – Gholamreza Takhti, Iranian wrestler ( d. 1968 )

* 1930 – Judge Joseph Force Crater steps into a taxi in New York and disappears never to be seen again.

* 1930 – Abbey Lincoln, American singer-songwriter and actress ( d. 2010 )

* 1930 – Betty Boop makes her cartoon debut in Dizzy Dishes.

* 1930 – Jacques Parizeau, Canadian economist and politician

* 1930 – Wilfried Hilker, German football referee

* 1930 – Don Ho, American singer and pianist ( d. 2007 )

* 1930 – Bernard Manning, English comedian ( d. 2007 )

* 1930 – Wilmer Mizell, American baseball player ( d. 1999 )

* 1930 – Vali Myers, Australian painter ( d. 2003 )

* 1930 – Cosima Wagner, Hungarian daughter of Franz Liszt and widow of Richard Wagner ( b. 1837 )

* 2012 – Jerry Lynch, American baseball player ( b. 1930 )

Iuliu Maniu ( 1873 – 1953 ) was prime minister with an agrarian cabinet from 1928 to 1930, but the Great Depression made proposed reforms impossible.

1930 ) vol 1 pp 1 – 146 covers many major thinkers down to 1800

* 1837 – Mary Harris Jones, American labor organizer ( d. 1930 )

* 1930 – Lionel Bart, English composer ( d. 1999 )

* 1930 – Pierre Bourdieu, French sociologist ( d. 2002 )

* 1930 – Julie Bovasso, American actress ( d. 1991 )

* 1930 – Mahatma Gandhi ends a 241 mile march to Dandi in the Salt Satyagraha.

Gandhi led Indians in protesting the national salt tax with the Dandi Salt March in 1930, and later in demanding the British to immediately Quit India in 1942, during World War II.

Gandhi took leadership of Congress in 1920 and began a steady escalation of demands ( with Intermittent compromises or pauses ) until on 26 January 1930 the Indian National Congress declared the independence of India.

Gandhi then launched a new Satyagraha against the tax on salt in March 1930.

* 1930 – Mahatma Gandhi leads a 200-mile march, known as the Salt March, to the sea in defiance of British opposition, to protest the British monopoly on salt.

< imagemap > File: 1930s decade montage. png | From left, clockwise: Dorothea Lange's photo of the homeless Florence Thompson show the effects of the Great Depression ; Due to the extreme drought conditions, the farms become dry and the Dust Bowl spreads through America ; The Battle of Wuhan during the Second Sino-Japanese War ; Aviator Amelia Earhart becomes an American national icon ; German dictator Adolf Hitler and the Nazi Party attempted to establish a New Order of absolute Nazi German hegemony in Europe, which culminated in 1939 when Germany invaded Poland, leading to the outbreak of World War II ; The Hindenburg explodes over a small New Jerseian airfield, effectively ending commercial airship travel ; Mohandas Gandhi walks to the Indian Ocean in the Salt March of 1930 .| 420px | thumb

Mohandas Gandhi and supporters Salt Satyagraha | Salt March on March 12, 1930.

When Mahatma Gandhi organized the Dandi march in 1930, Rajaji broke the salt laws at Vedaranyam near Nagapattinam along with Indian independence activist Sardar Vedaratnam and was afterwards imprisoned by the British.

In April 1930, Mahatma Gandhi gave a call far ' Satyagraha ' against the British Government.

When Gandhi broke the salt laws at 6: 30 am on April 6, 1930, it sparked large scale acts of civil disobedience against the British Raj salt laws by millions of Indians.

However, Gandhi was arrested on the midnight of May 4 – 5, 1930, just days before the planned action at Dharasana.

" In early 1930 the Indian National Congress chose satyagraha as their main tactic for winning Indian independence from British rule and appointed Gandhi to organize the campaign.

The Indian National Congress, led by Gandhi and Jawaharlal Nehru, publicly issued the Declaration of Independence, or Purna Swaraj, on January 26, 1930.

On March 2, 1930 Gandhi wrote to the Viceroy, Lord Irwin, offering to stop the march if Irwin met eleven demands, including reduction of land revenue assessments, cutting military spending, imposing a tariff on foreign cloth, and abolishing the salt tax.

On March 12, 1930, Gandhi and 78 satyagrahis many of them were scheduled castes, set out on foot for the coastal village of Dandi, Gujarat, over from their starting point at Sabarmati Ashram.

Time magazine declared Gandhi its 1930 Man of the Year, comparing Gandhi's march to the sea " to defy Britain's salt tax as some New Englanders once defied a British tea tax.

Gandhi at Dandi, 5 April 1930, at the end of the Salt Satyagraha | Salt March

Today, a larger representation of the three monkeys is prominently displayed at the Sabarmati Ashram in Ahmedabad, Gujarat, where Gandhi lived from 1915 – 1930 and from where he departed on his famous salt march.

In 1930, he was fined for his participation in the Non-cooperation Movement led by Mahatma Gandhi. During this period he came in contact with Swami Ramanand Bharti, Dhulappa Navale, Gaurihar ( Appasaheb ) Sihasane & V. S. Page. There friendship lasted forever.