Astronomy Physics Technology Videos 

How to Drink Coffee in Space

Many of us remember being in a school assembly when an astronaut came to speak. The question on every kid’s mind (and teacher’s mind too, let’s be honest) was, “How do you go to the bathroom in space?” But what about other important things involving liquids in space? As it happens, there is a lot of research surrounding the behavior of fluids in zero gravity, such as how to drink coffee in space. In this video, our friend Dr. Joe Hanson from It’s OK to Be Smart explains why this…

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coffee Animals Biology Chemistry 

Living on Nothing but Coffee?

By Bill Sullivan, Ph.D. @wjsullivan Can you imagine living on nothing but coffee? Some of us would probably like to at times, if not for the taste then for the buzz the caffeine brings. Caffeine makes us feel more alert because it structurally resembles a molecule called adenosine. The longer we stay awake, the more adenosine accumulates in our brains, binding to the receptors that induce the sleepy feeling we all get after a long day. Adenosine is the body’s way of signaling to the brain that it has had…

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Latte foam: Photo by Piyato via freedigitalphotos.net Engineering Physics 

Science of Sloshing: Why Foam is Important

By Kate Stone Most of us know that carrying a full cup of hot coffee can be precarious and just one wrong move could send a wave of java sloshing over the rim. But have you ever noticed that adding a bit of foam to the top of the coffee makes moving with it easier? Scientists have found out why just a few layers of bubbles can significantly dampen the sloshing motion of liquid. However, investigating the effects of foam on fluid dynamics is about more than avoiding coffee spillage.…

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