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The ABC's of Nuclear Science

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Abstract:: The ABC's of Nuclear Science is a brief introduction to Nuclear Science. We look at Antimatter, Beta rays, Cosmic connection and much more. Visit here and learn about radioactivity - alpha, beta and gamma decay. Find out the difference between fission and fusion. Learn about the structure of the atomic nucleus. Learn how elements on the earth were produced. Do you know that you are being bombarded constantly by nuclear radiation from the Cosmos? Discover if there are radioactive products found in a grocery store. Do you know if you have ever eaten radioactive food? Find out what materials are needed to shield us from alpha, beta, gamma, radiation. Discover what have we gained by its study.

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: Lawrence Berkeley National Laboratory

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Exploring the Table of Isotopes

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Abstract:

The following information will help you understand the Periodic Table of the Isotopes.

Elements: Each element has a fixed number of positively charged protons in its nucleus and an equal number of electrons orbiting the nucleus. For example, hydrogen (H) has one proton and one electron, but lead (Pb) has 82 protons and 82 electrons. There are about 115 known elements of which 82 are naturally abundant.

Isotopes: The nucleus contains both protons and neutrons. An element has a fixed number of protons but may exist with various numbers of neutrons. The sum of the protons and neutrons is the mass number. For example, helium exists as 3He(2 protons and one neutron) or as 4He (2 protons and 2 neutrons). The two forms of helium are called isotopes of helium. Isotopes of an element have the same chemical properties but different weights. Some elements have many isomers. Tin (Sn) has about 38 known isotopes. ~

Subject:: Science and Technology
Grade Level:: Secondary, Post-secondary
Collection:: Lawrence Berkeley National Laboratory

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The Home Energy Saver

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Abstract:: The Home Energy Saver is designed to help consumers identify the best ways to save energy in their homes, and find the resources to make the savings happen. The Home Energy Saver was the first Internet-based tool for calculating energy use in residential buildings. The project is sponsored by the U.S. Department of Energy (DOE), as part of the national ENERGY STAR Program for improving energy efficiency in homes, with previous support from the U.S. Environmental Protection Agency (EPA), the US Department of Housing and Urban Development's PATH projgram, and the California Energy Commission's Public Interest Energy Research (PIER) program.

Subject:: Science and Technology
Grade Level:: Post-secondary
SubTopics:: Energy
Collection:: Lawrence Berkeley National Laboratory

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LBNL Isotopes Project Nuclear Data Dissemination Home Page

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Abstract:: Web page for the dissemination of information about nuclear data

Subject:: Science and Technology
Grade Level:: Post-secondary
Collection:: Lawrence Berkeley National Laboratory

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Viewing the Periodic Table of the Elements with X-rays

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Abstract:: X-rays and x-ray fluorescence are not new subjects to the field of physics. Wilhelm Röntgen discovered x-rays in 1895, and in 1901 he was awarded the very first Nobel Prize in physics for this discovery. Soon after, Charles Glover Barkla discovered that each element has its own characteristic x-ray spectrum. He was awarded a Nobel Prize in physics for this discovery in 1917. Sir William Henry Bragg and his son, Sir William Lawrence Bragg, were then able to experimentally prove that the discrete electron energy levels of an atom, an idea proposed by Niels Bohr, actually existed. They were awarded the Nobel Prize in physics for this in 1915. After this groundwork in x-ray spectroscopy was established, Henry Moseley showed that each elements characteristic x-ray energy spectrum followed the predictions of the Bohr atomic model.

Subject:: Science and Technology
Grade Level:: Secondary, Post-secondary
Collection:: Lawrence Berkeley National Laboratory

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Browse: Collection: Lawrence Berkeley National Laboratory

You searched for:

Refine Your Search

The ABC's of Nuclear Science

Exploring the Table of Isotopes

The Home Energy Saver

LBNL Isotopes Project Nuclear Data Dissemination Home Page

Viewing the Periodic Table of the Elements with X-rays

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