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Spent nuclear fuel pool

Turbine of a nuclear plant

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Nuclear energy in Brazil

Nuclear energy in Brazil

In 2016, gross electricity production in Brazil was 579 TWh. Of this total, 3% is produced by nuclear power plants (16 TWh). 

Currently, Brazil has two nuclear plants in operation: Angra 1 and Angra 2.

Private investment in nuclear energy is not allowed, although this is under review.

Brazil began developing nuclear technology in 1951 under the newly created National Research Council. However, it accelerated this under a military regime from 1964 to 1985.

Start of the Angra nuclear power plants

In 1970, the government decided to seek bids for the construction of a nuclear power generation plant. The contract for the construction of the Angra 1 plant…

Last review: November 20, 2020

Hamaoka Nuclear Power Plant, Japan

Hamaoka Nuclear Power Plant, Japan

The Hamaoka Nuclear Power Plant is a nuclear power plant located in Omaezaki, in Shizuoka prefecture on the east coast of Japan, 200 km southwest of Tokyo.

The plant is managed by Chubu Electric Power Company.

The Hamaoka nuclear power plant is made up of five nuclear reactors. On December 22, 2008, the construction of a sixth unit began.

Hamaoka reactors 1 and 2 were shut down on January 30, 2009.

It is currently closed to update seismic systems and to increase safety in case of unforeseen events, there is no legal precedent in Japan for a plant to close in compliance with all current regulations.

How did the Fukushima nuclear accident affect the Hamaoka…

Last review: November 19, 2020

What is an ion? Anions and cations

What is an ion? Anions and cations

An ion is a charged atom or group of atoms (molecular ions); it does not have a neutral electric charge. A cation is a positively charged ion, and an anion is a negatively charged one (atom or molecule). So, these chemical species may be positive or negative.

Ions are formed when atoms lose or gain electrons. Anions have more electrons than protons, and cations have a number of protons higher.

There are two kinds of ions: anions and cations. Cations and anions are represented with the symbol of the corresponding atom and the character "+" (cations) or "-" (anions).

If the number of electrons gained or lost is more significant than one is also indicated.

There are…

Last review: October 23, 2020

What is mechanical energy?

What is mechanical energy?

We define mechanical energy as the ability to produce mechanical work that a body possesses due to its mechanical origins, such as its position or speed.

There are two types of mechanical energy which are:

  • Kinetic energy is the energy of motion. All moving objects have kinetic energy.

  • Potential energy is the energy that an object can store energy as a result of its position. This stored energy of position is referred to as potential energy.

The mechanical energy of a body is the sum of the potential and kinetic energy.

The principle of conservation of mechanical energy relates to both energies. According to it, the sum of…

Last review: October 18, 2020

What is atomic energy?

What is atomic energy?

Atomic energy is the energy that holds the sub-particles of an atom together. An atom is made up of three sub-particles: neutrons, protons, and electrons. Neutrons and protons make up the nucleus and are held together by strong energy bonds.

The union or destruction of these links generates an enormous amount of energy. This power source can be used in various ways: electricity, nuclear weapons, vehicle propulsion.

When we refer to atomic or nuclear energy, we usually refer to the origin’s power.

The name nuclear energy is used because most of the power of an atom resides in its nucleus.

There are two types of nuclear reactions that release energy:

    Last review: October 16, 2020

Adsense alternatives: monetize a website with Ezoic

Adsense alternatives: monetize a website with Ezoic

Monetizing a website simply means making money.

An online business can work in two ways:

  • Selling products or services through a virtual store or social media.

  • Generating income through advertising networks or sponsored content.

  • Another way to profit from your website is by selling ad space on your site to advertising platforms.

    What are the different types of ads?

    There are three ways to earn money from ads:

    • CPC - Cost per click, that is, they pay you when a visitor has clicked on the ad.

    • CPM - Cost per impression, that in this case, they pay you for each time the ad is displayed,…

      Last review: October 15, 2020

    Power plants, types of power stations

    Power plants, types of power stations

    A power plant is a facility that transforms energy into electricity.

    Most of the power generation plants work using a heat source, thermal energy. This heat source can come from the combustion of fossil fuels or uranium in nuclear power plants.

    However, there are other types of plants that work in a very different way. It is the case of wind farms, photovoltaic plants, or tidal power stations.

    Depending on the energy source, they can be classified into:

    • Renewable energy plants which its source to generate electricity is inexhaustible. Solar energy plants is an example of a renewable power plant.

    • Non-renewable energy plants in which the…

      Last review: October 13, 2020

    What is the atomic nucleus? Properties of the nucleus of the atom

    What is the atomic nucleus? Properties of the nucleus of the atom

    The atomic nucleus is the small central part of the atom, with a positive electric charge. The nucleus concentrates most of the atom’s mass.

    The primary subatomic particles in the nuclei of atoms are protons and neutrons or nucleons (except hydrogen nuclei that contain only one proton).

    The same chemical element is characterized by the number of protons in the nucleus that determines the total positive charge. This number is called the atomic number. The mass number is the total number of protons and neutrons.

    Nuclear physics is the scientific branch responsible for the study and understanding of the atomic nucleus, including the forces that unite it and its composition.

    Last review: October 12, 2020

    Atomic theory, evolution of atomic models

    Atomic theory, evolution of atomic models

    Atomic theory is a scientific theory of the nature of matter. The atomic theory states that matter is made up of units called atoms. Within the atomic theory, several scientists have developed different atomic models to describe the atomic structure.

    The atomic theory began as a philosophical concept in ancient Greece. They believed that an atom was a no divisible entity. The word atom originates from the ancient Greek adjective atomic, which means " no divisible." 

    From the 19th century on, scientists began to experiment and develop scientific theories.

    At the beginning of the 20th century, physicists discovered that the "indivisible atom" is actually a trove of…

    Last review: October 11, 2020

    Discovery of radioactivity

    Discovery of radioactivity

    In 1896, the French physicist Antoine Henri Becquerel discovers that certain substances produced penetrating radiation of unknown origin. This fact was named as we know it today: radioactivity.

    Two years before, in 1895, the German physicist Wilhelm Conrad Röntgen discovered X-rays. He worked with Hittorff-Crookes tubes and the Ruhmkorff coil to investigate the violet fluorescence produced by cathode rays.

    In Paris, the French Academy commissioned Henri Becquerel an investigation. They wanted him to investigate whether certain mineral salts could produce the discovery of the X-rays.

    The discovery of natural radioactivity

    Becquerel was working on cathode ray…

    Last review: October 3, 2020