Density differences cause objects to “float” in liquids that are already stacked on top of each other.
With this science-magic trick, you’ll put a new spin on our famous Density Column demonstration. First, you’ll discover how to stack nine layers of liquids on top of each other. That alone looks really cool, but then you take it up a notch by making different solid objects “float” in the middle of all those cool looking stacked liquids. You’ll surprise yourself and your friends with what you can do with the 9-Layer Density Tower. Continue reading
It’s the world’s coolest crystal ball.
Create a soap film on the rim of a bucket and, with one other simple ingredient, you will have made the world’s coolest crystal ball.
Source: Dry Ice Crystal Ball Bubble – SICK Science | Experiments | Steve Spangler Science
Making liquid nitrogen is hard – in fact up until 150 years ago scientists doubted whether it was even possible to liquefy nitrogen. In 1823, At the royal institution in London, Michael Faraday first produced liquid chlorine, kind of accidentally by putting it under high pressure. He similarly liquefied ammonia. Continue reading
Sitting around a campfire, you can feel its heat, smell the woody smoke, and hear it crackle. If you get too close, it burns your eyes and stings your nostrils. You could stare at the bright flames forever as they twist and flicker in endless incarnations… But what exactly are you looking at? Elizabeth Cox illuminates the science behind fire. Continue reading
We looked into the history and quirks of cold matter and why the International Space Station may soon be home to the coolest spot in the universe.
This video shows how to make liquid carbon dioxide using a plastic pipette.
Heinrich Jaeger, William J. Friedman and Alicia Townsend Professor in Physics, and Scott Waitukaitis, a graduate student in the Physics department, have published a report in the July 12 issue of Nature on the process of impact-activated solidification that occurs when compressive forces are applied to fluid-grain suspensions. The two researchers conduct experiments with a mixture of cornstarch and water that is classified as a non-Newtonian liquid. Their work examines the strange behavior of the cornstarch-water liquid, which instantly changes into a solid within the area of impact. The behavior of non-Newtonian liquids has puzzled scientists for decades, and Waitukaitis and Jaeger’s report sheds new light on this longstanding problem in suspension science.