Daily Shaarli
October 22, 2021
The Raspberry Pi’s small size and broad range of applications means it can be ideal for use in situations where power can be unreliable or not accessible. While most microcontrollers are capable of recovering in the event of a sudden power loss the Raspberry Pi is more like a desktop computer and so can suffer from data corruption if not properly shut down. It can also sometimes not be practical to power the Raspberry Pi from a standard power source and so batteries must be used instead.
The Raspberry Pi UPS Hat by Buyapi.ca is ideal for these circumstances.
In the event of a power failure the UPS Hat can notify the Raspberry Pi that power has been lost and using shell scripting the Pi can be instructed to shut down gracefully. The UPS HAT can also be used to provide a continuous 5 volt 3 amps to the Raspberry Pi from a battery source.
The battery included with the UPS hat is capable of powering the Raspberry Pi for about 30 minutes, more than enough to ensure the Pi shuts down gracefully and no data is lost.
Honda Aircraft Company was born from Honda’s desire to explore new technologies outside of the automotive sector. Years of research and development ensued, and the HondaJet was born and then commercialized after the project team, led by engineer Michimasa Fujino, proved out its breakthrough design and market viability. Today, Fujino leads Honda Aircraft as president and CEO as it manufactures the best-in-class HondaJet Elite. In the few short years since its introduction, the HondaJet Elite’s presence has expanded all over the world, achieving the coveted No. 1 delivery status in its class two years in a row (2017 and 2018).
Natural gas is what Stefano Marani and Nick Mitchell had on their minds when they bought gas rights on this 87,000-hectare piece of land in the Free State province in 2012, for just $1.
When they had their gas finds tested, they discovered unusually high amounts of helium mixed in with the gas that mean their dollar investment could be worth billions.
Their company Renergen is almost ready to start producing both natural gas and helium, placing South Africa on an elite map with helium reserves that could be the richest and cleanest in the world.
Those first tests revealed helium concentrations of two to four percent. In the United States, helium is extracted at concentrations as low as 0.3 percent.
"That was when we knew we had something special," Marani said. "It really was right place, right time."
Further exploration has found concentrations as high as 12 percent, Renergen says. //
The global helium market was worth $10.6 billion in 2019, according to the firm Research and Markets. Since few countries produce helium, supplies are frequently disrupted.
Renergen estimates its helium reserve could be as much as 9.74 billion cubic meters—larger than the known reserves in the entire United States.
Media Player Classic - Home Cinema (MPC-HC) is a free and open-source video and audio player for Windows. MPC-HC is based on the original Guliverkli project and contains many additional features and bug fixes.
Q:
I have been wondering why only electrons revolve around protons instead of protons other way around. They have electrostatic force and I think mass factor has nothing to do here. Then why?
Electrons do not "revolve around" the nucleus. They have a probability to be found near the nucleus, and they have the property of angular momentum but you really should not imagine it as proper movement... –
Stian Yttervik
Sep 20 at 13:32
A:
NB: I interpreted the question to essentially mean, why do protons rather than electrons reside in nuclei?
Electrons repel each other with a Coulomb force that grows very large when they are close together. Protons also repel each other in the same way, but the difference is that protons are also attracted to each other and to neutrons by the even stronger strong nuclear force (since protons are made up of quarks that feel the strong force), which acts over short range (∼10−15
m) and thus can be bound into dense nuclei.
Electrons are point-like particles and not made up of quarks. They do not interact via the strong nuclear force and cannot be bound into dense nuclei.
So how on Earth could Relativity Space compete with SpaceX?
Well, Relativity has something SpaceX doesn’t, a 3D printer that can make rockets! This might sound like a gimmick to some, but it is a truly revolutionary piece of technology in reality.
The printer is known as Stargate. It can print around 95% of a rocket, including fuel tanks, rocket engines and payload capsules in various metal alloys to an incredibly high level of accuracy.
This gives Relativity some crucial advantages over SpaceX. 3D printing is one of the fastest methods of production, Relativity claim they can build a functional rocket capable of commercial launches in just two months. This means they can do rapid prototyping and out develop their competitors. This is why their rocket engine, Aeon 1 has already had over 500 test fires, and is already a proven and refined engine, despite only being a few years old.
3D printing also means they can have some very unique architecture. This is most notable in the Aeon 1 engine, which only has a hundred parts, whereas other engines typically have well over a thousand parts. Things like cryogenic fuel lines are embedded into the combustion funnel walls rather than being welded onto them, as they are in other rocket engines. Not only does this mean assembly is quicker and easier, but it means the design can be optimised, far more than traditional engines, as there are fewer manufacturing limitations.
But, Relativity has also taken a note from SpaceX’s book. Their first launch vehicle, the Terran 1, has a reusable first stage that lands just like the Falcon 9. The first test launch is scheduled for early 2022, but we already know some details of what the commercial Terran 1 will be capable of, a cost per launch of $12 million for 1,250 kg to LEO.
The K-Lite Codec Pack is a collection of DirectShow filters, VFW/ACM codecs, and tools. Codecs and DirectShow filters are needed for encoding and decoding audio and video formats. The K-Lite Codec Pack is designed as a user-friendly solution for playing all your audio and movie files. With the K-Lite Codec Pack you should be able to play all the popular audio and video formats and even several less common formats.
The 4 universal rules of gun safety are:
- Treat all guns as if they are always loaded.
- Never let the muzzle point at anything that you are not willing to destroy.
1 Keep your finger off the trigger until your sights are on target and you have made the decision to shoot. - Be sure of your target and what is behind it.
The initiative, however, received no recognition from President Biden. One of Musk’s followers on Twitter asked: “The President of the United States has refused to even acknowledge the 4 newest American astronauts who helped raise hundreds of millions of dollars for St. Jude. What’s your theory on why that is?”
“He’s still sleeping,” Musk responded.
The Biden administration’s apparent refusal to acknowledge the mission comes after it snubbed Tesla, which Musk also leads, by not inviting it to an electric vehicle summit — because the firm does not have unionized workers. //
The Democrats turn their backs on Musk for two reasons. For one, many Democrats are radicalized and hate billionaires. They consider their wealth to be an egregious corruption and proof that the capitalist system is evil. They think the billions of Musk and others like Bezos should be taken from them and given to government programs.
The other part of the Democrat party, namely elected officials, don’t like Musk because it’s useful not to. They feel they have to adhere to the first group’s thoughts and feelings and so they turn their back on them. What’s more, they do it because they want to pressure Musk into adopting systems of control that would put him further under their thumb. As Daily Wire reported above, they snubbed Musk first because he’s not using union labor, and union labor and Democrats go hand in hand. //
While Musk is looking up and thinking about how to bring humanity the stars, the Democrats are looking at you and wondering how they can bring you under their rule. They can’t rightly do that if you’re too busy cheering on and wanting to support their enemies.
Democrats are not about the future of humanity, they’re about the future of their rule.