A space-age “force field” capable of protecting armoured vehicles and tanks by repelling incoming fire is being developed by British military scientists.
By Justin MullinsPass a current or magnetic field through a conducting fluid and it will generate a force. Numerous aerospace engineers have tried and failed to exploit this phenomenon, known as magnetohydrodynamics, as an exotic form of propulsion for aircraft. But perhaps attempts so far have all been too big.
A very small design could have a better chance of taking off, says Subrata Roy, an aerospace engineer at the University of Florida, Gainesville, US.
With a span of less than 15 centimetres, his aircraft qualifies as a micro air vehicle (MAV), but it has an unconventional design to say the least. It is a saucer shape covered with electrodes that ionise air to create a plasma. This plasma is then accelerated by an electric field to push air around and generate lift.
Fifty years ago, humans took their first steps on the Moon. The world watched as we made history.
On July 19 at 1 p.m. EDT, we’ll salute our #Apollo50th heroes and look forward to our next giant leap.
Will you be watching? https://go.nasa.gov/327ZDZs
Scientists are unlocking clues about the earliest formation of our solar system from a Kuiper Belt Object known as 2014 MU69.
This article was originally an answer to a member of Quora, a Q&A site in which I am a cryptocurrency columnist. The reader is a “Bitcoin beginner”. If you understand the nature and purpose of a blockchain, the political leanings of Satoshi or the economics of a capped cryptocurrency, then this reviews things that you already know. But sometimes, a recap can be fun. It helps ensure that we are all on the same page…
In a previous post, we have already addressed a fundamental question:
It has nothing to do with how many individuals can own bitcoin or its useful applications. It simply means that—if widely adopted as a payment instrument or as cash itself—the number of total units is capped at 21 million. But each unit can subdivided into very tiny pieces, and we can even give the tiny pieces a new name (like femto-btc or Satoshis). It is only the originally named unit (the BTC) that is capped.
But, this article addresses a more primitive question. (Actually, it is a naïve question, but this adjective has a negative connotation, which is not intended). I interpret the question to be: What prevents me from creating, earning or being awarded an amount that brings the total circulation above 21 million BTC?
Continue reading “Why is it impossible to create more Bitcoin?” »
We’re preparing for the launch of our first #Artemis mission to the Moon. Get a preview of the launch countdown and see how NASA’s Space Launch System will send NASA’s Orion Spacecraft to lunar orbit: https://go.nasa.gov/2NH0HAA
The quantum computing revolution is upon us.
Establish a foundation of knowledge for understanding quantum computing with this two-course online program. Starts October 7th, 2019.
Imagine a world where everything is exactly the same as this one but no one knows of its existence, even though it could be staring you right in the face. These are called mirror universes — a parallel world in a different time space. While this prospect may seem a bit fetched to many, Leah Broussard believes that these parallel universes are actually very real. In fact, she, along with her colleagues at Oak Ridge National Laboratory in Tennessee, is on the hunt for a mirror universe and plans on opening portals to them.
Broussard is attempting to open a portal to a parallel universe by, what she calls “oscillation” which would eventually lead her to mirror matter. To conduct these experiments during the upcoming summer, Broussard will send a beam of subatomic particles down a 50-foot tunnel, past a powerful magnet, and into an impenetrable wall.
So what’s the point of that? Well, if the setup is just right, some of those particles will transform into mirror-image versions of themselves, allowing them to tunnel right through the wall. If it works, this would be the first proof of a mirror universe. The whole experiment will only take around a day but analyzing the data will take many weeks afterward. Either way, it won’t be long before the results are published.
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A Chinese admiral reveals that China has mastered a new and silent electrical propulsion system for submarines.
