Particle Physics

A:

The element lead has 82 protons and 82 electrons. It's element number 82 and has a molar mass of 207 moles/gram. Lead’s atomic symbol is Pb.

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  • What is the particle theory of matter?

    Q: What is the particle theory of matter?

    A: The particle theory of matter states that all matter is made up of tiny particles, specifically atoms and molecules, and that these particles have inherent characteristics. A major part of the theory is the belief that all particles in a single pure substance are the same and are different from particles of other substances.
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  • What is the God particle?

    Q: What is the God particle?

    A: The so-called "God particle" is more properly known as the Higgs boson. This particle was isolated for the first time at the Large Hadron Collider in a discovery announced on July 4, 2012. According to HowStuffWorks, this particle is fundamentally responsible for giving other particles their mass and might be responsible for the effects of gravity.
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  • What is the space-time continuum?

    Q: What is the space-time continuum?

    A: In physics and mathematics, the space-time continuum is a model of understanding space and time in a way that emphasizes their geometric qualities and views them as parts of a single concept that spans multiple dimensions, including time. This concept was developed as a means of describing space and time as physical constructs that are closely related to each other. Albert Einstein and other scientists following him developed this concept.
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  • What is an atom smasher?

    Q: What is an atom smasher?

    A: An atom smasher is a large installation commonly referred to as a particle accelerator. It works by accelerating electrons to a significant fraction of the speed of light and then crashing them into the nuclei of atoms. The resulting debris can then be searched for otherwise elusive particles that can shed light on theories of physics.
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  • What percentage of his brain did Einstein use?

    Q: What percentage of his brain did Einstein use?

    A: Einstein used 100 percent of his brain just as all people do. The contention that humans use only about 10 percent of their total brain capacity is a myth that is sometimes attributed to Einstein.
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  • Who discovered nuclear fusion?

    Q: Who discovered nuclear fusion?

    A: Robert d'Escourt Atkinson and Friedrich George "Fritz" Houtermans first discovered the origins of nuclear fusion in 1929. They are credited with discovering that the fusing of nuclei creates energy by following Albert Einstein's Theory of Relativity.
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  • What does "E=mc²" mean?

    Q: What does "E=mc²" mean?

    A: In the equation E=mc², e stands for energy, m stands for mass and c² stands for the speed of light squared. First proposed by Albert Einstein, this equation demonstrates that energy and matter are interchangeable.
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  • Where can nuclear energy be found?

    Q: Where can nuclear energy be found?

    A: According to the World Nuclear Association, as of April 2014, 31 countries derive some of their electrical power from nuclear energy. Furthermore, 56 countries have nuclear reactors dedicated to scientific research. All total there are 430 commercial power-generating nuclear plants, 240 research reactors and 180 nuclear power plants providing electricity for ships at sea.
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  • What is the force of gravity on Mercury?

    Q: What is the force of gravity on Mercury?

    A: According to NASA, the surface gravity of Mercury is 12.1 feet per second squared. In comparison with Earth, this means that a person weighing 100 pounds on Earth would only weigh 38 pounds on Mercury.
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  • What is gene cloning?

    Q: What is gene cloning?

    A: Gene cloning occurs when a specific gene from a strand of DNA has been extracted and copied from an organism. Nearly any tissue source can be used for cloning, as long as there is not widespread degradation. DNA can also be extracted from RNA using a process called reverse transcription.
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  • What are the building blocks of matter?

    Q: What are the building blocks of matter?

    A: The fundamental building blocks of matter are particles called quarks and leptons. There are six different types of quarks and six different types of leptons. Scientists classify the various types of quarks and leptons into different generations. Each generation contains two quarks and two leptons. The lightest and most stable particles form the first generation, and each subsequent generation contains heavier and less stable particles.
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  • What is nuclear force?

    Q: What is nuclear force?

    A: Nuclear force is the force that holds the particles of atomic nuclei, protons and neutrons, together. It is a fundamental force able to overcome the electric force that would otherwise force the nucleus apart within extremely small distances. Unlike the electrical force, the nuclear force reduces extremely quickly with distance, dropping to zero before it interacts with the atom's own electrons.
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  • Q: What is linear expansivity?

    A: Linear expansivity is a material's tendency to lengthen in response to an increase in temperature. Linear expansivity is a type of thermal expansion. It is described by a fraction that represents the fractional increase in length of a thin beam of a material exposed to a temperature increase of one degree Celsius. The fraction is called the linear expansion coefficient of the material.
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  • Q: How do you travel in time?

    A: As of 2014, time travel is not possible. Despite not being capable of traveling through time, since at least the 1930s, scientists have gained enough knowledge of time and space to determine that it will eventually be possible.
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  • Q: What is wave energy?

    A: According to Pelamis Wave Power, wave energy is energy transferred from wind forces to the waves of a body of water, such as the ocean. Wave energy should not be confused with tidal energy.
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  • Q: What is a particle diagram?

    A: A particle diagram is a visual representation of the particles of a substance, with the particles typically represented as dots. Digital particle diagrams can also show the movement of particles within a particular substance.
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  • Q: What are some negative effects of gamma rays?

    A: Depending on the types of exposure, the negative effects of gamma rays vary from skin rashes to cancer. High doses of gamma rays can cause death.
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  • Q: What is the alpha scattering experiment?

    A: Rutherford's alpha scattering experiment is used to demonstrate the structure of atoms. Beams of alpha particles, nuclei of helium atoms, are used to irradiate a gold foil. Rutherford observed a few alpha particles going straight through, a few small deflections, a few large deflections and a few particles scattered back, which indicates that an atom has an intensely positively charged nucleus at its center.
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  • Q: What is infrared radiation?

    A: Infrared radiation is a segment of the electromagnetic spectrum typified by its long wave lengths. These waves are substantially longer than the shorter wave lengths of other electromagnetic radiation, such as X-rays and gamma rays, and contain less energy than short wave lengths, making them less dangerous to organic life.
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  • Q: What did Niels Bohr discover about atoms?

    A: The Danish physicist Niels Bohr developed a model of the atom that combined Ernest Rutherford's discovery of the nucleus with the quantum ideas proposed by Max Planck. This solved the problem of why the electrons did not immediately collapse into the nucleus. Bohr received the Nobel Prize in Physics for his discovery in 1922.
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  • Q: What is a newton meter?

    A: According to Dictionary.com, a newton meter is equivalent to the work done by a force of one unit when its point of application moves through a distance of 1 meter in the direction of the force. It is the standard unit of work energy in the International System of Units.
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