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Sonoluminescence

Sound can actually light up a liquid, an effect called sonoluminescence. The effect occurs when the power of an ultrasonic sound wave is transferred into liquid, superheating it and creating a very tiny bubble–the temperature inside is often hot enough … Read more

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How Vast the Ranges

“We tend to forget how vast are the ranges of existing reality which our eyes cannot directly see, and our attitudes may become narrow and provincial. We need to develop a wider outlook, to see ourselves in our relative position … Read more

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The Origin of Mark Twain

The minimum safe depth for paddle steamers on the Mississippi River in the nineteenth century was 2 fathoms, or 12 feet, which was called out as “mark twain”—which Samuel Clemens took as his pen name!

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LightLight

NASA’s Catchy X-Ray Song

X-Rays are a type of electromagnetic radiation (EMR), or “non-visible light,” with high-frequency short wavelengths. Learn all about X-rays and how we use them to “see” the universe around us in this wonderful music video created by NASA and sung … Read more