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Description
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.
Description
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.
Description
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.
Description
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...
Description
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.
Description
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...
Description
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,...
Description
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...
Description
This program opens with a whimsical scene in a movie theater in which the history of the universe trails backwards to the big bang, the moment at which general relativity and quantum mechanics both come into play, and therefore the point at which our conventional model of reality breaks down. Then it's string theory to the rescue as physicist Bryan Greene describes the serendipitous steps that led from a forgotten 200-year-old mathematical formula...
11) Einstein
Description
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.
Description
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...
13) Our Hiroshima
Description
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...
Description
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...
Description
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,...
Description
The question of human origins, and of the beginning of life itself, is one of the most controversial science has ever wrestled with -- and the debates are as divisive today as they were in the 19th century. This program tells the story of how scientists came to explain the genesis and diversity of living things; it also explores the connection between evolution and the long and violent history of our planet. Although Charles Darwin figures in most...
Description
This clever animated biography of Albert Einstein incorporates photos and quotes into a lively overview of the physicist's life and ideas. Careful attention is given to how Einstein reconciled conventional velocity addition with the constant speed of light and how he arrived at his special and general theories of relativity. His most famous equation, E=mc2, is derived in four simple steps. The tapping of matter's energy through fission and fusion...
Description
How did 20th-century physics change long-held notions of light's makeup and behavior? This group of 12 concise computer-animated videos illustrates Einstein's monumental contributions to the study of light. Showing how rudimentary ideas of material wave motion yielded to more advanced concepts of electromagnetic waves, the program details Einstein's conclusions about the speed of light and his conception of time-which, given his findings on mass and...
Description
Introducing EinSteinchen, an animated techno-Einstein who has a genius for explaining physics. In section, this likable know-it-all elucidates 12 essential topics in 90-second segments that are perfect for launching lectures or illustrating concepts. Section two departs from EinSteinchen's virtual world to show 12 cutting-edge applications or studies of Einsteinian physics in high-level mini-documentaries of two to five minutes in length.
Description
Black holes are by definition invisible, and there is no scientific theory that can adequately explain them. Nevertheless, researchers are determined to unravel the mysteries of black holes in the hope of answering some of the universe's most pressing questions. This program spotlights the work of MIT's Max Tegmark and Shep Doeleman as well as of string field theorist Michio Kaku as it questions the relevance of Einstein's General Theory of Relativity...
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