How Helicopters Land if the Engine Dies

How Helicopters Land if the Engine Dies

Destin from Smarter Every Day sets out to prove that Neil deGrasse Tyson is wrong when he says a helicopter whose engine fails will fall like a brick.

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10 Questions Science Still Can’t Answer

10 Questions Science Still Can’t Answer

Science has unravelled some of the world’s greatest mysteries, but it can’t explain everything.
Why is it that we dream? And will we ever know what lies ahead after death?

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How Hard It Is To Destroy Non-Newtonian “Oobleck”?

How Hard It Is To Destroy Non-Newtonian “Oobleck”?

You’ve probably never heard of oobleck before now, but we hope watching it undulate and explode in slow-motion will make you want to find out more.

A non-Newtonian fluid is a fluid with properties that differ in any way from those of Newtonian fluids. Most commonly, the viscosity (the measure of a fluid’s ability to resist gradual deformation by shear or tensile stresses) of non-Newtonian fluids is dependent on shear rate or shear rate history. Some non-Newtonian fluids with shear-independent viscosity, however, still exhibit normal stress-differences or other non-Newtonian behavior. Many salt solutions and molten polymers are non-Newtonian fluids, as are many commonly found substances such as ketchup, custard, toothpaste, starch suspensions, maizena, paint, blood, and shampoo. [via]
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Non-Newtonian “Oobleck” in this video is just a mixture of corn starch and water, but the way it behaves makes you wonder if it isn’t some form of new liquid devised in an underground laboratory somewhere. It’s just really cool to watch.

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This Cool Animation Explains Newton’s Laws of Motion

Do you still remember Newton’s laws of motion?

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Amazing 4K Video of Colorful Liquid in Space

Amazing 4K Video of Colorful Liquid in Space

Ever wondered what water in space would look like in 6K?

Astronauts aboard the International Space Station dissolved an effervescent tablet into a floating ball of water and captured the result in 4K video.

These higher resolution images and higher frame rate videos can reveal more information when used on science investigations, giving researchers a valuable new tool aboard the space station.

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How To Detect A Secret Nuclear Test

How To Detect A Secret Nuclear Test

How can we know that North Korea and Iran (to name a few) are exploding nuclear weapons if no inspectors have ever been granted access to suspected nuclear sites in these countries?

How can we passively detect a secret detonation of a nuclear warhead? What are the telltale signs of a nuclear detonation?

Watch MinutePhysics’s explanation of the Comprehensive Nuclear-Test-Ban Treaty (CTBT) and how its International Monitoring System works.

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