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Smiling Buddha
Smiling Buddha (Ministry of External Affairs (India), MEA designation: Pokhran-I) was the code name of India's first successful Nuclear weapons testing, nuclear weapon test on 18 May 1974. The nuclear fission bomb was detonated in the Pokhran#Pokhran Test Range, Pokhran Test Range of the Indian Army in Rajasthan. As per the Military Intelligence Corps (United States Army), United States military intelligence, the operation was named as ''Happy Krishna''. The Indian Ministry of External Affairs (India), Ministry of External Affairs (MEA) described the test as a peaceful nuclear explosion. The bomb was built by scientists at the Bhabha Atomic Research Centre (BARC) headed by Raja Ramanna, in assistance with the Defence Research and Development Organisation (DRDO) headed by Basanti Dulal Nagchaudhuri, B. D. Nag Chaudhuri under the supervision of the Atomic Energy Commission of India, Atomic Energy Commission headed by Homi Sethna. A CIRUS reactor, CIRUS nuclear reactor given by Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pokhran
Pokhran (official spelling Pokaran; ) is a town and a municipality located 112 km east of Jaisalmer city in the Jaisalmer district of the Indian state of Rajasthan. It is situated in the Thar Desert region. Surrounded by rocks, sand and five salt ranges, the word "Pokaran" (पोकरण) means "place surrounded by five salt-ranges" in Rajasthani. The site for India's first and second underground nuclear weapon test is near Pokhran. Geography Pokhran is located 112 km east of Jaisalmer city, 172 km northwest of Jodhpur and 225 km south of Bikaner by road. It lies on Jaisalmer to Jodhpur railway line. It is situated at and has an average elevation of 233 metres (764 feet). It has arid climate as it lies in the Thar Desert and receives a little rain in the monsoon months July to September. Pokhran has extreme climate. It has extremely hot and dry summers from April to June though monsoon months are also very hot. The temperature in summer c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Homi Sethna
Homi Nusserwanji Sethna (24 August 1923 – 5 September 2010) was an Indian nuclear scientist and a chemical engineer, gaining international fame as the Chairman of the Atomic Energy Commission (India) during the time when the first nuclear test, codename ''Smiling Buddha'' in Pokhran Test Range in 1974 was conducted. He was the primary and central figure in India's civilian nuclear program as well as the construction of nuclear power plants. In 1991, he was appointed as Sheriff of Mumbai. He was awarded the second highest civilian award the Padma Vibhushan in 1975, by Government of India. Earlier in his career, he had full technical responsibility for setting up of the Thorium extraction plant at Alwaye, Kerala India, for separation of rare earth from monazite sands. Early life and education Homi Sethna was born to a Parsi family on 24 August 1923 in Bombay (now Mumbai). He did his schooling from St. Xavier's High School, Fort, Bombay. He studied chemical engine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Nations Security Council
The United Nations Security Council (UNSC) is one of the six principal organs of the United Nations (UN) and is charged with ensuring international peace and security, recommending the admission of new UN members to the General Assembly, and approving any changes to the UN Charter. Its powers as outlined in the United Nations Charter include establishing peacekeeping operations, enacting international sanctions, and authorizing military action. The UNSC is the only UN body with authority to issue resolutions that are binding on member states. Like the UN as a whole, the Security Council was created after World War II to address the failings of the League of Nations in maintaining world peace. It held its first session on 17 January 1946 but was largely paralysed in the following decades by the Cold War between the United States and the Soviet Union (and their allies). Nevertheless, it authorized military interventions in the Korean War and the Congo Crisis and peaceke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Permanent Members Of The United Nations Security Council
The permanent members of the United Nations Security Council (also known as the Permanent Five, Big Five, or P5) are the five sovereign states to whom the Charter of the United Nations, UN Charter of 1945 grants a permanent seat on the United Nations Security Council, UN Security Council: China, France, Russia, United Kingdom, and United States. The permanent members were all Allies of World War II, Allies in World War II (and the victors of that war), and are list of states with nuclear weapons, the five states with the first and most nuclear weapons."Table 10.1. World nuclear forces, January 2020" page 326, Chapter 10: "World nuclear forces", ''Military Spending and Armaments, 2019'', Stockholm International Peace Research Institute, retrieved March 18, 2023 All have the United ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kiloton
TNT equivalent is a convention for expressing energy, typically used to describe the energy released in an explosion. A ton of TNT equivalent is a unit of energy defined by convention to be (). It is the approximate energy released in the detonation of a tonne, metric ton (1,000 kilograms) of trinitrotoluene (TNT). In other words, for each gram of TNT exploded, (or 4184 joules) of energy are released. This convention intends to compare the destructiveness of an event with that of conventional explosive materials, of which TNT is a typical example, although other conventional explosives such as dynamite contain more energy. A related concept is the physical quantity TNT-equivalent mass (or mass of TNT equivalent), expressed in the ordinary unit of mass, units of mass and its multiples: kilogram (kg), megagram (Mg) or tonne (t), etc. Kiloton and megaton The "kiloton (of TNT equivalent)" is a unit of energy equal to 4.184 Metric prefix#List of SI prefixes, terajoules (). A kil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Weapon Yield
The explosive yield of a nuclear weapon is the amount of energy released such as blast, thermal, and nuclear radiation, when that particular nuclear weapon is detonated. It is usually expressed as a ''TNT equivalent'', the standardized equivalent mass of trinitrotoluene (TNT) which would produce the same energy discharge if detonated, either in kilotonnes (symbol kt, thousands of tonnes of TNT), in megatonnes (Mt, millions of tonnes of TNT). It is also sometimes expressed in terajoules (TJ); an explosive yield of one terajoule is equal to . Because the accuracy of any measurement of the energy released by TNT has always been problematic, the conventional definition is that one kilotonne of TNT is held simply to be equivalent to 1012 calories. The yield-to-weight ratio is the amount of weapon yield compared to the mass of the weapon. The practical maximum yield-to-weight ratio for fusion weapons (thermonuclear weapons) has been estimated to six megatonnes of TNT per tonne of bomb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plutonium-239
Plutonium-239 ( or Pu-239) is an isotope of plutonium. Plutonium-239 is the primary fissile isotope used for the production of nuclear weapons, although uranium-235 is also used for that purpose. Plutonium-239 is also one of the three main isotopes demonstrated usable as fuel in thermal spectrum nuclear reactors, along with uranium-235 and uranium-233. Plutonium-239 has a half-life of 24,110 years. Nuclear properties The nuclear properties of plutonium-239, as well as the ability to produce large amounts of nearly pure 239Pu more cheaply than highly enriched weapons-grade uranium-235, led to its use in nuclear weapons and nuclear power plants. The fissioning of an atom of uranium-235 in the reactor of a nuclear power plant produces two to three neutrons, and these neutrons can be absorbed by uranium-238 to produce plutonium-239 and other isotopes. Plutonium-239 can also absorb neutrons and fission along with the uranium-235 in a reactor. Of all the common nuclear fuels, 2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Weapon Design
Nuclear weapons design are physical, chemical, and engineering arrangements that cause the physics package of a nuclear weapon to detonate. There are three existing basic design types: # Pure fission weapons are the simplest, least technically demanding, were the first nuclear weapons built, and so far the only type ever used in warfare, by the United States on Empire of Japan, Japan in World War II. # Boosted fission weapons are fission weapons that use nuclear fusion reactions to generate high-energy neutrons that accelerate the fission chain reaction and increase its efficiency. Boosting can more than double the weapon's fission energy yield. # Staged thermonuclear weapons are arrangements of two or more "stages", most usually two, where the weapon derives a significant fraction of its energy from nuclear fusion (as well as, usually, nuclear fission), . The first stage is typically a boosted fission weapon (except for the earliest thermonuclear weapons, which used a pure fission ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indira Gandhi
Indira Priyadarshini Gandhi (Given name, ''née'' Nehru; 19 November 1917 – 31 October 1984) was an Indian politician and stateswoman who served as the Prime Minister of India, prime minister of India from 1966 to 1977 and again from 1980 until Assassination of Indira Gandhi, her assassination in 1984. She was India's first and, to date, only female prime minister, and a central figure in Indian politics as the leader of the Indian National Congress (INC). She was the daughter of Jawaharlal Nehru, the first prime minister of India, and the mother of Rajiv Gandhi, who succeeded her as prime minister. Gandhi's cumulative tenure of 15 years and 350 days makes her the second-longest-serving Indian prime minister after her father. Henry Kissinger described her as an "Iron Lady", a nickname that became associated with her tough personality. During her father Jawaharlal Nehru's premiership from 1947 to 1964, Gandhi was his hostess and accompanied him on his numerous foreign trips. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prime Minister Of India
The prime minister of India (ISO 15919, ISO: ) is the head of government of the Republic of India. Executive authority is vested in the prime minister and his chosen Union Council of Ministers, Council of Ministers, despite the president of India being the nominal head of the executive. The prime minister has to be a member of one of the houses of bicameral Parliament of India, alongside heading the respective house. The prime minister and the cabinet are at all times responsible to the Lok Sabha. The prime minister is appointed by the president of India; however, the prime minister has to enjoy the confidence of the majority of Lok Sabha members, who are directly elected Elections in India#Parliamentary general elections (Lok Sabha), every five years, lest the prime minister shall resign. The prime minister can be a member of the Lok Sabha or the Rajya Sabha, the upper house of the parliament. The prime minister controls the selection and dismissal of members of the Union ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weapons-grade Nuclear Material
Weapons-grade nuclear material is any fissionable nuclear material that is pure enough to make a nuclear weapon and has properties that make it particularly suitable for nuclear weapons use. Plutonium and uranium in grades normally used in nuclear weapons are the most common examples. (These nuclear materials have other categorizations based on their purity.) Only fissile isotopes of certain elements have the potential for use in nuclear weapons. For such use, the concentration of fissile isotopes uranium-235 and plutonium-239 in the element used must be sufficiently high. Uranium from natural sources is enriched by isotope separation, and plutonium is produced in a suitable nuclear reactor. Experiments have been conducted with uranium-233 (the fissile material at the heart of the thorium fuel cycle). Neptunium-237 and some isotopes of americium might be usable, but it is not clear that this has ever been implemented. The latter substances are part of the minor actinides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutron Moderator
In nuclear engineering, a neutron moderator is a medium that reduces the speed of fast neutrons, ideally without capturing any, leaving them as thermal neutrons with only minimal (thermal) kinetic energy. These thermal neutrons are immensely more susceptible than fast neutrons to propagate a nuclear chain reaction of uranium-235 or other fissile isotope by colliding with their atomic nucleus. Water (sometimes called "light water" in this context) is the most commonly used moderator (roughly 75% of the world's reactors). Solid graphite (20% of reactors) and heavy water (5% of reactors) are the main alternatives. Beryllium has also been used in some experimental types, and hydrocarbons have been suggested as another possibility. Moderation Neutrons are normally bound into an atomic nucleus and do not exist free for long in nature. The unbound neutron has a half-life of 10 minutes and 11 seconds. The release of neutrons from the nucleus requires exceeding the binding ener ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
