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Collection: Lawrence Berkeley National Laboratory
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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.
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- Abstract: Explore the range of electromagnetic radiation from radio waves to gamma rays using this PDF version of our popular poster.
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- Abstract: Berkeley Lab's Environmental Energy Technologies Division develops technology that uses, converts and stores energy more efficiently and with less environmental impact, and studies the link between energy use and the environment. An important outcome of its work is the development of technologies and processes to mitigate the environmental effects of energy use.
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- Abstract: What is it about a material that makes it hard, brittle, or a good electrical conductor? Powerful new tools like the Advanced Light Source help scientists probe the inner structure of materials. Bring the scientific research done at the the Advanced Light Source into your classroom using this complete teaching module.
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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. ~
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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.
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- Abstract: A material so strong it stops bullets! Find out why Kevlar is so strong. And learn how research facilities like the Advanced Light Source can reveal the details of Kevlar's structure. Bring the scientific research done at the the Advanced Light Source into your classroom using this complete teaching module.
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- Abstract: The Advanced Light Source (ALS) is a particle accelerator that moves electrons in a big way to produce extremely bright light for many types of scientific experiments. The ALS moves the electrons using electromagnets (in the linear accelerator, booster ring, and storage ring) and permanent magnets (in the undulators and wigglers). This unit gives students the chance to move electrons and explore the relationship between electricity and magnetism by making a simple electromagnet and building the world’s simplest electric motor.
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- Abstract: This site introduces, through an interactive adventure tour, the theory of fundamental particles and forces. It also looks at why physicists want to go beyond the Standard Model theory.
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- Abstract: When we apply the scientific method to real-world problems, often we can invent applications for the effects we observe even without understanding the origins of those effects. This process is commonly used in the development of new technologies; one example is the discovery of x rays. This curriculum unit is designed to encourage this investigative process through inquiry-based learning involving exploring, observing, and then applying the information gained. Light and its interactions with matter form the main focus for this activity, because light is the chief product of the Advanced Light Source (ALS). One property of light (polarization) is highlighted as a tool for exploration. This activity can be used in lessons on the scientific method, how advances in technology occur, the properties of light, how we observe things, or other related topics.
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- Abstract: Wetlands are natural recycling plants, but they are often endangered by the waste people put there. Understanding the complex processes that enable a marsh to clean water, recycle nutrients, and immobilize toxic elements will help us protect these diminishing resources. Bring the scientific research done at the the Advanced Light Source into your classroom using this complete teaching module.
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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.
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- Abstract: Computers can't teach everything in anatomy, but they can teach some things better, either by themselves or through synergy with conventional methods. Try out this award-winning virtual frog- as a case in point.
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