Move Along Airplanes – Submarines Overtake Travel

Stainless, Steel

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China has moved a step closer to creating a supersonic submarine that could travel from Shanghai to San Francisco in less than two hours. Not much is known about the team’s progress because it is a military project, but the SCMP reports that Germany, Iran and the US are working on similar projects.

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The team from the Harbin Institute of Technology was inspired by a supersonic torpedo invented by the Soviet Union during the Cold War.

Water yields more friction on an object than air, which should mean that a submerged boat or weapon could never travel at the same speed as an airplane.

But the Soviet military figured out how to put a missile inside an air bubble to cheat this rule of science — a process known as ‘supercavitation’. They created the Shakval, a torpedo that could reach speeds of over 379 km/h, much faster than any other torpedo available.

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The Chinese team, led by engineering professor Li Fengchen, sought to apply the same process to a submarine by overcoming two central problems. The submarine would need to be launched at speeds of up to 100 km/h in order to generate the air bubble. It would also require very advanced steering because the ship’s rudder would be inside the bubble, not touching the water. The answer was found in the form of a manmade liquid membrane that would cover the submarine’s surface. The result is a vessel that could reach the speed of sound, crossing the entire Pacific Ocean in approximately 100 minutes. Once supercavitation is harnessed, it could be incorporated into any underwater activity.

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Shanghai Metal manufactures the stainless steel used in submarine hull manufacturing. To find out more, please visit our websiteLinkedInTwitter, Facebook and Instagram. Or you could try our new mobile app by scanning our QR code.

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Sources: SCMP, Elite Daily

Siobhan R.// SMC Editor

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What Is The Mirror Paradox?

Stainless, Steel

The mirror paradox is best stated as a question: why is a mirror image seen as left to right reversed but not top to bottom? It’s a real optical phenomenon by the 3 dimensional spatial world in which we live.

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Stephen Law gives an analogy: if you walk through a door that opens on the right side, why does it open on the left side when you come back the other way? The answer is because you turn yourself around. Law argues that if we lived in zero gravity, where you could turn yourself upside down to open the door, it would still open the same way – so the implication is that it’s gravity that creates the emphasis on the vertical axis.

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Still with us? Well, this answer is deceptively simple: the mirror doesn’t reverse left to right, or top to bottom, it reverses back to front. We live in 3 dimensions, not 2, and a mirror reverses everything in the dimension perpendicular to its plane. So the rotation is a genuine illusion (it doesn’t happen), but the reversal is a true optical phenomenon.

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Then mirrors are both scientific and psychological phenomenon’s to be revered. Shanghai Metal manufactures stainless steel mirrored sheets used in mirrored interior design.mirror cover

 

To find out more, please visit our websiteLinkedInTwitter, Facebook and Instagram. Or you could try our new mobile app by scanning our QR code.

You can also read more articles by our team at SMC:

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Is Stainless Steel Really Stainless?

Sources: Journeyman Philosopher

Siobhan R.// SMC Editor

SMC QR

#BuildingValueAcrossTheGlobe