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
“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
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!
Mike and Cary at HTwins have come up with a fascinating way of exploring our universe. As they say, this animation lets you “zoom from the edge of the universe to the quantum foam of spacetime and learn about everything … Read more
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
How far is it from Earth to the edge of our solar system? The folks at the BBC and Beautiful Studio produced this excellent and very large infographic that lets you scroll (and scroll and scroll) from our troposphere to … Read more
“If you try and take a cat apart to see how it works, the first thing you have on your hands is a non-working cat. Life is a level of complexity that almost lies outside our vision; it is so … Read more