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user20180120 | 1 year ago | on: Mass worldwide IT outage affects airlines, media and banks

Mass IT outages reported worldwidepublished at 07:58 07:58Breaking

Major banks, media outlets and airlines are currently suffering major IT outages.

Flights have been grounded at Sydney airport, United Airlines has stopped flying, and the London Stock Exchange group’s platform is experiencing outages.

user20180120 | 1 year ago | on: Högertrafikomläggningen

Making everyone speak English should not happen!

We need to understand that the language you are able to think in - limits your thinking.

Some languages have things you cannot translate into English.

These non translateable concepts do not exist in the Western world view point.

user20180120 | 1 year ago | on: 'Underwater bicycle' propels swimmers forward at superhuman speed

Would this device be even better if it has the newer efficient propeller design called MX-1 Sharrow Propeller ?

https://www.boatus.com/expert-advice/expert-advice-archive/2...

At the 2020 Miami International Boat Show, Philadelphia-based Sharrow Marine introduced the culmination of a seven-year research and development project called the MX-1 Sharrow Propeller. Unlike every prop that's come before it, rather than blades, the MX-1 has loops of metal attached to the hub.

How does this change the dynamic? In a nutshell, much of a prop's inefficiency can be blamed on the blade tips, where vortices and cavitation (commonly called tip vortex cavitation, or TVC) form, creating turbulence and sapping efficiency. Simply put, the loops on a Sharrow have no tips. The net result is an efficiency gain of between 9% and 15%. But just as important, eliminating the cavitation vastly reduces vibrations and noise and makes for a smoother, quieter boat ride.

Company president Greg Sharrow tells us that the development of the MX-1 can be credited to music videos.

"I was trying to solve the problem of reducing unwanted noise from drones while filming live music productions," he says. "I've always thought it would be cool to use a drone to get cameras closer to subjects and film them from onstage, but you can't use drones for music broadcasts because they're too noisy. I knew that most of the noise comes from the blade tips and is caused, in part, by tip vortices. So, I'd have to find a way to eliminate them."

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