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Antoine-Henri Becquerel

Antoine-Henri Becquerel

Antoine-Henri Becquerel studied at the Polytechnic School. In 1875 he entered the department of bridges and roads, and became chief engineer in 1894. In 1892 he succeeded his father in the chair of the Museum of Natural History, and in 1895 he became professor of the Polytechnic School.

He continued his father's studies, and the discovery of X-rays by Röntgen (1896) made Antoine-Henri Becquerel think that this new radiation could be related to fluorescence and phosphorescence.

Henri Becquerel He also studied the polarization and absorption of light in crystals.

Finally, his experiments with uranium and the radiation it entailed would cause him to die.

The…

Last review: June 19, 2019

Enriched uranium

Enriched uranium

Enriched uranium is uranium that has gone through a technological process to increase the proportion of the uranium-235 isotope. As a result, natural uranium is divided into enriched uranium and depleted uranium.

Natural uranium contains three isotopes of uranium: uranium-238 (99.2745%), uranium-235 (0.72%) and uranium-234 (0.0055%). The isotope uranium-238 is a relatively stable isotope, incapable of an independent nuclear chain reaction, unlike the rare uranium-235. Currently, uranium-235 is the main fissile material in the chain reactions of nuclear reactors and nuclear weapons technologies. However, for many applications, the fraction of…

Last review: June 18, 2019

Disadvantages Of Nuclear Energy

Disadvantages Of Nuclear Energy

At the moment of analyzing the disadvantages of nuclear energy in the first place, it is necessary to consider the different areas in which nuclear energy is used. The main use of nuclear energy is the generation of electricity. Although electricity production is the most controversial nuclear application, nuclear technology is also used in the military, medical or environmental fields, among others.

One of the advantages of nuclear energy is that it reduces the dependence on thermal power plants and, therefore, the consumption of fossil fuels. However, the main source of greenhouse gas generation comes from road transport. That is, the use of…

Last review: May 31, 2019

Advantages Of Nuclear Energy

Advantages Of Nuclear Energy

The use of nuclear energy involves some controversy. The main disadvantages of nuclear energy are widely known, especially those related to environmental pollution problems in the event of nuclear incidents or accidents.

However, the advantages of nuclear energy are important enough to keep this technology active. The main use of this technology based on the manipulation of atoms is the generation of electrical energy, which is considered a form of non-renewable energy.

Despite this, there are other uses of nuclear energy in such important fields as medicine, pest control, etc.

Advantages of nuclear energy for the generation of electricity

Through nuclear…

Last review: May 26, 2019

Nuclear Power in Argentina

Nuclear Power in Argentina

Electricity consumption in Argentina has grown strongly since 1990. Per capita consumption was just over 2000 kWh / year in 2002 and increased to around 3000 kWh / year in 2015. Gross electricity production in 2016 was 147 TWh , with 75 TWh (51%) of natural gas, 38 TWh (26%) of hydropower, 21 TWh (14%) of oil, 3 TWh (2%) of coal, 8 TWh (5% *) of nuclear energy and 10 TWh of net import. The total electric power produced by fossil fuels is 99TWh.

In Argentina, approximately 10% of electricity comes from 3 operational nuclear reactors: the Embalse nuclear power plant, a CANDU reactor, and the Atucha 1 nuclear power plant in 1974, a German PHWR design. In 2001, the plant was…

Last review: May 24, 2019

Atomic Number

Atomic Number

The atomic number is a physical and chemical concept related to the structure of the atoms of each element. The total number of protons (elementary positive charges) of the nucleus of a given atom is treated. It is represented by the letter Z. The conventional symbol Z possibly comes from the German word Z ahl which means number.

The atomic number is used to classify elements within the periodic table of elements.

The sum of the atomic number Z and the number of neutrons N gives the mass number A of an atom. Atoms with the same atomic number Z, but different numbers of neutrons N, and therefore different atomic masses, are known as isotopes.

The search for new elements…

Last review: May 20, 2019

Three Mile Island nuclear power plant, USA

Three Mile Island nuclear power plant, USA

The Three Mile Island nuclear power plant is Troba a l'Illa to the Susquehanna river to the county of Dauphin to Pennsylvania, a deu quilometres to the south-east of Harrisburg ALS Estats Units.

On March 28, 1979, collapse 1 collapse to nuclear reactor number 2, which will be destroyed. Three Mile Island is AIXI IUD because it is Troba to three thousand riu avall from Middletown, Pennsylvania. The nuclear plant will be built originally by General Public Utilities Corporation, later on, with the nou nom of GPU Incorporated.

L'accident is going to classify in level 5 of the INES scale and it will be the nuclear accident most important dins dels Estats Units. After…

Last review: May 2, 2019

Three Mile Island's Nuclear Accident

Three Mile Island's Nuclear Accident

The central Three Mile Island is located about 16 km from Harrisburg in the state of Pennsylvania, in the United States. It is a nuclear power plant with two nuclear pressurized water reactors.

The nuclear accident at the Three Mile Island nuclear power plant occurred on March 28, 1979, one year after the commissioning of unit 2. At around 4 am, the water supply circuit was disconnected. steam turbines which caused the cooling circuit of the primary circuit to stop working.

The overheating produced in the reactor core resulted in an increase in the pressure in the primary circuit, causing the introduction of control rods intended to automatically stop the nuclear reactor.

Last review: May 2, 2019

Nuclear Power in Chile

Nuclear Power in Chile

During the 70s and 80s Chile was in the process of modernizing the electric sector. During these years Chile liberalized its economy, privatized utility companies and opened the electricity sector to foreign investors.

During this time, however, Chile did not initiate any nuclear energy program unlike Argentina and Brazil. Chile did not seem willing to consider a nuclear energy option. Even in 2005, the future president Michelle Bachelet did not want to incorporate the development of nuclear energy as a valid option as part of her national energy policy.

Subsequently, several factors caused a change in the conception of nuclear energy in Chile. On the one…

Last review: April 30, 2019

Neutron

Neutron

A neutron is a subatomic particle that is part of the atom (along with the proton and the electron). Neutrons and protons form the atomic nucleus. Neutrons have no net electric charge, unlike the proton that has a positive electric charge.

The difference in the number of neutrons in the nucleus of an atom does not imply the variation of the nature of the atom itself, but it does determine the isotope to which it is a part.

In nuclear energy the concept "uranium enrichment" refers to the alteration of the number of neutrons in the atomic nucleus in order to obtain another more unstable uranium atom. This modification implies, therefore, an isotope change.

Since…

Last review: March 19, 2019

Proton

Proton

Definition of proton

A proton is a subatomic particle with positive electric charge that is inside the atomic nucleus of atoms. The number of protons in the atomic nucleus determines the atomic number of an element, as indicated in the periodic table of the elements.

The proton has charge +1 (or, alternatively, 1.602 x 10 -19  coulombs), exactly the opposite of the charge -1 that contains the electron. In mass, however, there is no competition - the mass of the proton is approximately 1,836 times greater than that of an electron.

The proton is classified as baryon, and is composed of three quarks (uud). The corresponding antiparticle,…

Last review: March 19, 2019