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Gale In Context: Science is an engaging online resource that provides contextual information on hundreds of today’s most significant science topics. By integrating authoritative reference content with headlines and videos, learners see how scientific disciplines relate to real-world issues, from weather patterns to obesity. Users can explore millions of full-text articles from national and global publications, 200+ experiments and projects, and top reference content.
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Over the last 40 years, Horizon has joined scientists as they have probed the secrets of the universe - from the origin of dark matter to the nature of gravity and even stealing a glimpse into the private life of a black hole. Dallas Campbell delves into the Horizon archive to reveal the mind-boggling discoveries that have changed the way we think about our world.
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Episode 8 of the Shedding Light on Atoms series explains how ionic bonds are formed in 3D lattice structures. Spiro Liacos, a science teacher, examines how atoms can gain or lose electrons, and how the number of electrons gained or lost depends on an atom's electron configuration. The program concludes by comparing ionic compounds with covalent compounds, explaining the difference at the atomic level.
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Episode 7 of the "Shedding Light on Atoms" series explains how the atoms of non-metals bond together with covalent bonds to form molecules. Science teacher Spiro Liacos introduces the concepts of electron dot diagrams, structural formulas, electron configuration, and organic chemistry.
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This series uses demonstrations and animations to take students on a journey of discovery to explain what we know about atoms-and how we know what we know about atoms. The Fifth episode examines the experiments that lead to the discovery of protons, neutrons, and electrons. By explaining the basics of atoms, students can better understand the chemical reactions which led to their discovery.
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This series uses demonstrations and animations to take students on a journey of discovery to explain what we know about atoms-and how we know what we know about atoms. This fourth episode examines the discovery of atoms and the development of the periodic table. By explaining the basics of atoms, students can better understand the chemical reactions which led to their discovery. It also looks at the Mendeleev's predictions of atoms that were later...
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The Shedding Light on Atoms series uses demonstrations and animations to take students on a journey of discovery to explain what we know about atoms-and how we know what we know about atoms. The second episode explores how the discovery of oxygen helped to accelerate the study of chemistry. It examines how hydrogen was discovered and how it was revealed that water is formed when hydrogen and oxygen chemically join together. It then looks at oxygen's...
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This video explores atomic modeling through history, starting with the ancient Greeks and Chinese and then moving into the 19th and 20th century. Learn about the foundational work Mendeleyev provided for today's periodic table. Take an in-depth look at today's table and learn what each piece of information means. Look at bonding models and listen to the limitations they pose in accurately explaining and accounting for bonding phenomena.
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This program from Rockets! covers the evolution of rockets beginning with China's first primitive efforts, to the British rocketeers of the 1800s, and into the 20th century. The work of famed scientists is covered, including Konstantin Tsiolkovsky and Hermann Oberth, as well as the first efforts of a young Wernher Von Braun. The program traces in detail the story of Robert Goddard, a young physics professor from Massachusetts who launched the world's...
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This series uses demonstrations and animations to take students on a journey of discovery to explain what we know about atoms-and how we know what we know about atoms. The sixth episode examines the qualities of the electron shell, and the experiments that lead to its discovery. By explaining the basics of atoms, students can better understand the chemical reactions which led to their discovery. It also looks at the arrangement of the periodic table,...
10) Our Hiroshima
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Setsuko Nakamuro Thurlow, a relentless campaigner for peace, was 13 when the atomic bomb dropped on Hiroshima, killing most of her family. Her vivid eyewitness account, combined with rare archival footage taken before and after the event, provides a comprehensive record of this pivotal episode in world history. A haunting music score, stark images, moving testimonies, and impassioned speeches make a compelling case for peace and nuclear sanity. The...
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Exploring the antithesis of the wave model, this album of eight computer-animated video segments looks at the particle approach to studying light. Black-body radiation, Planck's constant, the Photoelectric Effect, and the work of James Clerk Maxwell are presented as forerunners to Einstein's concept of photon frequency. Examples of a slope intercept graph and a revised double-slit experiment using light-sensitive paper segue to an illustration of...
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What exactly is nanotechnology? How does it work? And how might it benefit-or endanger-humankind? This program considers those and other questions as it addresses a range of topics such as nanoscale units of measurement, the special properties of nanoparticles, the gecko and lotus effects, carbon nanotubes, surface energy, and hydrophilic and hydrophobic surfaces. Special sections on the use of lasers in nanotechnology and issues raised by nanotechnology...
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Trying to create a device that can measure the flow of heat at a quantum level, postdoctoral student Keith Schwab confronts the uncertainty principle not only in physics but in life as well. This program follows the arduous quest of a charismatic young physicist and the personal price of his dedication to a long-term goal. Working at Caltech with his mentor, Professor Michael Roukes, Keith sees how his ambitious experiment is less technical than artistic,...
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In this concise and logically formatted program, students discover the fundamental building blocks of the universe: the elements. Lively computer animation makes the atom and its constituent parts-the proton, neutron, and electron-easy to understand. The Bohr Model and the Quantum Mechanical Model of the atom are clearly differentiated. Working from these concepts, students can then make sense of the Periodic Table with its arrangement according to...
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This program provides a substantive overview of the theoretical dispute between Albert Einstein and Niels Bohr, a controversy that still resonates today. Bohr's Copenhagen Interpretation-that measurement of phenomena creates a set of possible outcomes and that unobserved phenomena are meaningless-is thoroughly explained in conjunction with Einstein's cause-and-effect approach. Using clever animation, archival footage, and interviews with leading physicists,...
16) Nuclear energy
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This program looks inside a modern nuclear reactor and explores its functions in detail. It also addresses nuclear safety-the various measures intended to diminish the risk of accidents and radioactive emissions. Finally, the program looks at the steps involved in the production and storage of radioactive waste, as well as the dangers of its by-products.
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To walk around with Murray Gell-Mann is to see the world through the keen eyes of a scientist. Gell-Mann, by temperament, approaches elementary particle physics from the point of view of a naturalist. We owe to him the discovery in 1952 of the quantity in theoretical physics called "strangeness. In 1969, he received the Nobel Prize for work that led to the discovery of "quarks. In this program with Bill Moyers, Gell-Mann discusses the simplicity and...
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Just the term "nuclear energy" makes many people shudder. Yet, though it sometimes escapes human control, nuclear energy is a source of benefits, and could someday even satisfy most of our energy needs. This program takes us to the heart of the atom, to examine the processes of fission and fusion by which energy can be produced with the use of uranium or even water. We learn that nuclear energy is also used to save lives (with radiation therapy) and...
19) Einstein
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Known as the father of modern physics, his name is synonymous with genius. This A&E Special tells the story of Albert Einstein's amazing professional and personal life.
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Gravity may seem elementary. But proving Einstein's theories about it is quite hard. To do so, scientists are struggling to capture gravity's most elusive hallmark: the gravitational wave. This science bulletin focuses on research at the Laser Interferometer Gravitational-Wave Observatory (LIGO) in Livingston, Louisiana, where scientists have constructed a sprawling facility dedicated to the detection of minute changes in space/time caused by gravitational...