2D Gel Electrophoresis
This animation describes how the technique of two-dimensional gel electrophoresis is used to separate mixtures of proteins inside a gel.
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Absorption of Light
This animation explains how a material's chemical composition affects the wavelengths of light it absorbs and the color it displays.
Absorption of Light
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Accidental Discoveries That Changed the World
Throughout the history of science, many major discoveries came accidentally. Sometimes they came from recognizing potential in an unexpected product or waste. Other times, discovery came out of pure desperation from a seemingly dead-end experiment. This video presents some of those happy accidents that ended up changing the world.
Accidental Discoveries That Changed the World
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Accidental Discoveries That Went Boom
Chemistry research usually involves precise measurements and careful testing in order to get significant results. Sometimes, however, notable discoveries happen by accident. In this video on accidental discoveries, you will get to know the stories of how TNT, dynamite, and even air bags were discovered by chance.
Accidental Discoveries That Went Boom
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The Accidental Discovery of LSD
Unlike its name, Bicycle Day is not a holiday honoring your favorite two-wheeled, environmentally friendly vehicle. This holiday celebrates the day chemist Albert Hofmann first discovered the psychedelic effects of lysergic acid diethylamide, otherwise known as LSD-25. This video explores the chemical history of LSD. [Correction at 0:09, 1:13, and 1:46: “Hoffman” should be spelled “Hofmann”]
The Accidental Discovery of LSD
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The Achievements of Edwin Hubble
When you hear the name “Hubble,” you might think of the NASA/ESA Hubble Space Telescope. But, decades before this telescope was built, Dr. Edwin Powell Hubble revolutionized the field of astronomy. This video looks at the life and work of this brilliant American astronomer for whom the Hubble Space Telescope is named. Credit: ESA Hubble Videos; Hubblecast 89: Edwin Hubble; Directed by: Mathias Jäger; Visual design and editing: Martin Kornmesser; Written by: Rebecca Louise Davies, Georgia Blazon; Narration: Sara Mendes da Costa; Images: NASA, ESA/Hubble, Huntington Library, California Institute of Technology, Hans A. Rosbach, Jonathunder; Animations: NASA, ESA/Hubble; Music: zero-project; Web and technical support: Mathias Andre and Raquel Yumi Shida; Executive producer: Lars Lindberg Christensen
The Achievements of Edwin Hubble
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Action of Epinephrine on a Liver Cell
This animation shows how the hormone epinephrine causes liver cells to secrete glucose without crossing their cell membrane.
Action of Epinephrine on a Liver Cell
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Action of Glucocorticoid Hormone
This animation explains how glucocorticoid hormones influence nutrient metabolism by altering gene expression in cells.
Action of Glucocorticoid Hormone
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Action Potentials and Muscle Contraction
This animation explains how an electrical signal (action potential) stimulating skeletal muscle triggers changes that enable muscle contraction.
Action Potentials and Muscle Contraction
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Activation of Complement
This animation explains how a specific group of proteins in blood and body fluids works with the immune system to kill bacteria and other foreign invaders in the body.
Activation of Complement