Absorption of Light
This animation explains how a material's chemical composition affects the wavelengths of light it absorbs and the color it displays.
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Video
Do Astronauts Need Sunscreen?
How do astronauts survive the deadly radiation of deep space? NASA is still figuring out how to protect astronauts from cosmic radiation using plastic shielding and magnetic deflectors.
Do Astronauts Need Sunscreen?
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Food Myths #1: No, Your Microwave Isn't Dangerous
We all want to be healthy, but some food myths can actually get in the way of good nutritional decisions. This video shatters one food myth that you may have heard: microwaving your food zaps its nutritional value. Watch to find out why that statement is false. [Credit: Reactions/American Chemical Society (www.youtube.com/acsreactions)]
Food Myths #1: No, Your Microwave Isn't Dangerous
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How Fluorescence Works
Have you ever wondered what makes a fluorescent color stand out so brightly from other colors? This video digs into what makes those colors pop, and highlights some of the brilliant applications of fluorescence coming out of nanotechnology.
How Fluorescence Works
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Reflection and Refraction
This animation shows how light moving into a denser medium is both reflected and refracted.
Reflection and Refraction
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Vertical Farming
There's a new trend in agriculture called vertical farming. When humans first learned to farm, we arranged plants outside in horizontal fields, and then invented irrigation and fertilizers to grow crops. But with modern technology and farmers’ cleverness, we can now stack those fields vertically, just as we stacked housing to make apartment buildings. This video explores the many benefits of moving plants indoors, and explains why the choice of lighting can make or break the cost of a vertical farm and affect how long it might take for urban agriculture to blossom.
Vertical Farming
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What Do Thermometers Measure?
We place a lot of trust in modern thermometers, but do you know how those instruments actually work? The answer involves thermodynamic principles. Physical chemists and engineers have taken temperature-measuring tools from the simple—but still useful—glass thermometers to digital and even infraread readouts. This video samples them all while explaining the difference between heat and temperature.
What Do Thermometers Measure?
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What is the Blackest Black?
Go to any paint store, and you'll see a dozen or so variations of the color black. But what is the darkest one available? This video looks for—and finds—the blackest black material.
What is the Blackest Black?