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Nuclear Weapons Convention
A nuclear weapons convention is a proposed multilateral treaty to eliminate nuclear weapons. This might include prohibitions on the possession, development, testing, production, stockpiling, transfer, use and threat of use of nuclear weapons, such as those in the Treaty on the Prohibition of Nuclear Weapons, along with provisions for their verified elimination. It could be similar to existing conventions outlawing other categories of weapons, such as biological weapons, chemical weapons, anti-personnel mines and cluster bombs. History The Nuclear Non-Proliferation Treaty states that "Each of the Parties to the Treaty undertakes to pursue negotiations in good faith on effective measures relating to cessation of the nuclear arms race at an early date and to nuclear disarmament, and on a treaty on general and complete disarmament." In 1996, the International Court of Justice concluded that this means "There exists an obligation to pursue in good faith and bring to a conclusion ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multilateralism
In international relations, multilateralism refers to an alliance of multiple countries pursuing a common goal. Multilateralism is based on the principles of inclusivity, equality, and cooperation, and aims to foster a more peaceful, prosperous, and sustainable world. Middle powers play a crucial role in the international system by promoting multilateralism and internationalism. One of the key advantages of multilateralism is that it enables countries to solve problems that transcend national boundaries, such as climate change, terrorism, and pandemics, through shared responsibility and burden-sharing. However, multilateralism is not without its challenges. The rise of populism, nationalism, and protectionism in some countries has raised concerns about the future of multilateralism and the effectiveness of international cooperation. Definitions Multilateralism, in the form of membership in international institutions, serves to bind powerful nations, discourage unilateralism, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Campaign To Abolish Nuclear Weapons
The International Campaign to Abolish Nuclear Weapons (abbreviated to ICAN, pronounced ) is a global civil society coalition working to promote adherence to and full implementation of the Treaty on the Prohibition of Nuclear Weapons. The campaign helped bring about this treaty. ICAN was launched in 2007. In 2022, it counted 661 partner organizations in 110 countries. The campaign received the 2017 Nobel Peace Prize "for its work to draw attention to the catastrophic humanitarian consequences of any use of nuclear weapons and for its ground-breaking efforts to achieve a treaty-based prohibition of such weapons." Mission ICAN aims to reframe the disarmament discussion to center on the humanitarian threat that nuclear weapons pose by highlighting their extraordinary capacity for destruction, their disastrous health and environmental effects, their indiscriminate targeting, the crippling effects of a nuclear detonation on medical facilities and relief efforts, and the long-l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear-weapon-free Zone
A nuclear-weapon-free zone (NWFZ) is defined by the United Nations as an agreement that a group of states has freely established by treaty or convention that bans the development, manufacturing, control, possession, testing, stationing or transporting of nuclear weapons in a given area, that has mechanisms of verification and control to enforce its obligations, and that is recognized as such by the General Assembly of the United Nations. NWFZs have a similar purpose to, but are distinct from, the Treaty on the Non-Proliferation of Nuclear Weapons to which List of parties to the Nuclear Non-Proliferation Treaty, most countries including five nuclear weapons states are a party. Another term, nuclear-free zone, often means an area that has banned both nuclear power and nuclear weapons, and sometimes nuclear waste and nuclear propulsion, and usually does not mean a UN-acknowledged international treaty. The NWFZ definition does not count countries or smaller regions that have outlawed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Day For The Total Elimination Of Nuclear Weapons
The International Day for the Total Elimination of Nuclear Weapons, also known as Nuclear Weapons Elimination Day, is an international observance declared by the United Nations, held on 26 September every year. The day promotes the cause of nuclear disarmament. The observance was established in 2013. History On 26 September 2013, the UN United Nations General Assembly, General Assembly held its first ever high-level meeting on nuclear disarmament; the United Nations resolution, resolution that convened the meeting stated that the UN was "Convinced that nuclear disarmament and the complete elimination of nuclear weapons are essential to remove the danger of nuclear war." On 3 December, the General Assembly passed resolution 68/32, affirming that the high-level meeting had endorsed the abolition of nuclear weapons, and declaring an annual International Day for the Total Elimination of Nuclear Weapons on the anniversary of the meeting. 26 September also corresponds with the anniv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arms Control
Arms control is a term for international restrictions upon the development, production, stockpiling, proliferation and usage of small arms, conventional weapons, and weapons of mass destruction. Historically, arms control may apply to melee weapons (such as swords) before the invention of firearm. Arms control is typically exercised through the use of diplomacy which seeks to impose such limitations upon consenting participants through international treaties and agreements, although it may also comprise efforts by a nation or group of nations to enforce limitations upon a non-consenting country. Enactment Arms control treaties and agreements are often seen as a way to avoid costly arms races which could prove counter-productive to national aims and future peace. Some are used as ways to stop the spread of certain military technologies (such as nuclear weaponry or missile technology) in return for assurances to potential developers that they will not be victims of those tech ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Treaty
A treaty is a formal, legally binding written agreement between sovereign states and/or international organizations that is governed by international law. A treaty may also be known as an international agreement, protocol, covenant, convention, pact, or exchange of letters, among other terms; however, only documents that are legally binding on the parties are considered treaties under international law. Treaties may be bilateral (between two countries) or multilateral (involving more than two countries). Treaties are among the earliest manifestations of international relations; the first known example is a border agreement between the Sumer, Sumerian city-states of Lagash and Umma around 3100 BC. International agreements were used in some form by most major civilizations and became increasingly common and more sophisticated during the Early modern period, early modern era. The early 19th century saw developments in diplomacy, foreign policy, and international law reflected by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Red Cross And Red Crescent Movement
The organized International Red Cross and Red Crescent Movement is a Humanitarianism, humanitarian movement with approximately 16million volunteering, volunteers, members, and staff worldwide. It was founded to protect human life and health, to ensure respect for all human beings, and to prevent and alleviate human suffering. History Foundation Until the middle of the nineteenth century, there were no organized or well-established army nursing systems for casualties, nor safe or protected institutions, to accommodate and treat those who were wounded on the battlefield. A devout Calvinism, Calvinist, the Swiss businessman Jean-Henri Dunant traveled to Italy to meet then-French emperor Napoleon III in June 1859 with the intention of discussing difficulties in conducting business in French Algeria, Algeria, which at that time was occupied by France. He arrived in the small town of Solferino on the evening of 24 June after the Battle of Solferino, an engagement in the Second Itali ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Photography
Satellite images (also Earth observation imagery, spaceborne photography, or simply satellite photo) are images of Earth collected by imaging satellites operated by governments and businesses around the world. Satellite imaging companies sell images by licensing them to governments and businesses such as Apple Maps and Google Maps. History The first images from space were taken on sub-orbital flights. The US-launched V-2 flight on October 24, 1946, took one image every 1.5 seconds. With an apogee of 65 miles (105 km), these photos were from five times higher than the previous record, the 13.7 miles (22 km) by the Explorer II balloon mission in 1935. The first satellite (orbital) photographs of Earth were made on August 14, 1959, by the U.S. Explorer 6. The first satellite photographs of the Moon might have been made on October 6, 1959, by the Soviet satellite Luna 3, on a mission to photograph the far side of the Moon. The Blue Marble photograph was taken from sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plutonium
Plutonium is a chemical element; it has symbol Pu and atomic number 94. It is a silvery-gray actinide metal that tarnishes when exposed to air, and forms a dull coating when oxidized. The element normally exhibits six allotropes and four oxidation states. It reacts with carbon, halogens, nitrogen, silicon, and hydrogen. When exposed to moist air, it forms oxides and hydrides that can expand the sample up to 70% in volume, which in turn flake off as a powder that is pyrophoric. It is radioactive and can accumulate in bones, which makes the handling of plutonium dangerous. Plutonium was first synthesized and isolated in late 1940 and early 1941, by deuteron bombardment of uranium-238 in the cyclotron at the University of California, Berkeley. First, neptunium-238 (half-life 2.1 days) was synthesized, which then beta-decayed to form the new element with atomic number 94 and atomic weight 238 (half-life 88 years). Since uranium had been named after the planet Uranus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Highly Enriched Uranium
Enriched uranium is a type of uranium in which the percent composition of uranium-235 (written 235U) has been increased through the process of isotope separation. Naturally occurring uranium is composed of three major isotopes: uranium-238 (238U with 99.2732–99.2752% natural abundance), uranium-235 (235U, 0.7198–0.7210%), and uranium-234 (234U, 0.0049–0.0059%). 235U is the only nuclide existing in nature (in any appreciable amount) that is fissile with thermal neutrons. Enriched uranium is a critical component for both civil nuclear power generation and military nuclear weapons. Low-enriched uranium (20% 235U, typically >85%) is used for the cores of many nuclear weapons, as well as compact reactors for naval propulsion and research, as well as breeder reactors. There are about 2,000 tonnes of highly enriched uranium in the world. Enrichment methods were first developed on a large scale by the Manhattan Project. Its gaseous diffusion method was used in the 1940s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fissile Material
In nuclear engineering, fissile material is material that can undergo nuclear fission when struck by a neutron of low energy. A self-sustaining thermal chain reaction can only be achieved with fissile material. The predominant neutron energy in a system may be typified by either slow neutrons (i.e., a thermal system) or fast neutrons. Fissile material can be used to fuel thermal-neutron reactors, fast-neutron reactors and nuclear explosives. Fissile vs fissionable The term ''fissile'' is distinct from ''fissionable''. A nuclide that can undergo nuclear fission (even with a low probability) after capturing a neutron of high or low energy is referred to as ''fissionable''. A fissionable nuclide that can undergo fission with a high probability after capturing a low-energy thermal neutron is referred to as ''fissile''. Fissionable materials include those (such as uranium-238) for which fission can be induced only by high-energy neutrons. As a result, fissile materi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plutonium Pit
In nuclear weapon design, the pit is the core of an implosion nuclear weapon, consisting of fissile material and any neutron reflector or tamper bonded to it. Early pits were spherical, while most modern pits are prolate spheroidal. Some weapons tested during the 1950s used pits made with uranium-235 alone, or as a composite with plutonium. All-plutonium pits are the smallest in diameter and have been the standard since the early 1960s. The pit is named after the hard core found in stonefruit such as peaches and apricots. Designs The pits of the first nuclear weapons were solid, with an ''urchin'' neutron initiator in their center. The Gadget and Fat Man used pits made of 6.2 kg of solid hot pressed plutonium-gallium alloy (at 400 °C and 200 MPa in steel dies – and ) half-spheres of diameter, with a internal cavity for the initiator. The Gadget's pit was electroplated with 0.13 mm of silver because of plutonium's susceptibility to corrosi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
