Nov 232014
 
Schlieren Optical Technique Incredibly Shows The Flow Of Heat And Gas

Using Schlieren flow visualization, Harvard Natural Sciences Lecture Demonstrations can show small changes in the air that would usually go unseen by the naked eye. By pointing a light at a concave mirror and focusing the light onto the edge of a razor blade in front of a camera, the heat of a candle or helium from a balloon can be seen. Incredible!

NPR covered this technique back in April. 

 


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Nov 202014
 
Why Do Rivers Curve

Across the globe, rivers almost never run straight. Why is that? All it takes to turn a straight river into a curvy, winding one is a little disturbance and a lot of time, Minute Earth explains. Let’s say some muskrats dig a den near the edge of a river, that will cause the river to flow stronger on one side than the other. Over time, that will create a curve. 

 


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Nov 102014
 
Why Do We Like Our Own Farts

It may be crude, but it’s often the case. There’s no other way to say it: most people like the smell of their own farts. But why? As gross and hilarious as it may seem, scientists have confirmed that in a blind smell test, people prefer the smell of their own gas to other people’s brew. Asap Science explains why in this ridiculous educational video

 


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Nov 062014
 
Space Station Astronauts Put GoPro Into Floating Water Bubble

Astronauts spend their time on the International Space Station working on science experiments that can only be done in zero-gravity. But it’s not just hard work and number crunching. In this new video by NASA’s Marshall Center, a group of astronauts create a large bubble of floating water and then put a waterproof GoPro camera inside it. You know, for science!

 


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Nov 042014
 
Dropping A Bowling Ball And Feathers In A Perfect Vacuum Proves Science

Brian Cox of the BBC had the incredible opportunity to visit NASA’s Space Power Facility in Ohio to see the world’s largest vacuum chamber. As most kids learn in school that a bowling ball and a feather will fall at the same speed due to gravity if there is no air resistance, he and his new NASA friends decided to demonstrate the famous science experiment.

Even though the results are known, the experiment is still stunning to watch. The feathers and ball fall at the exact same rate and hit the ground at the same moment. Amazing!

This video has gone viral with over one million hits!

 


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