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When Two Supersonic Waves Meet How it Looks Like

Supersonic Waves

Sonic booms include the examples of thunderclaps, the ear-piercing sound of high-speed jets flying overhead, and even the snapping of a bullwhip. When an object moves faster than the speed of sound, they produce loud noises.

It is not observed by scientists yet that what happens when two fast moving objects pass the sound barrier side by side.

Fluid Dynamics and Sonic Booms

To understand this discovery, you must have some basic knowledge of fluid dynamics and sonic booms. There is no fixed shape of fluids and the air around us is also a fluid. Fluids not only include liquids.

There is fluid around the boat moving through the water and the jet moving through air. To remain above the aircraft depends on areas of high and low pressure. In flight as compared to the air behind the wings, the air in front of the plane is compressed. The ripple in the air and craft are moving at the same speed when aircraft speed increase than the speed of sound.

Shock waves having an incredible amount of energy are generated in the form of the explosive sonic boom when the plane moves faster than the speed of sound

High-speed jets generate a continuous supersonic disturbance in the fluid because they travel faster than March 1. We hear sonic booms when high energy fluid meets the observer, we can also photograph these pressure wakes by using special equipment’s.

Intersecting Ripples

Two supersonic jets don’t fly close to each other to avoid their shock waves to interact. There are photos of shockwaves but no record of what happens when two of them meet. Due to the number of variables, it is difficult to predict fluid motion outside of a controlled d environment.

pressreader.com

Nasa photograph the merging shockwaves of two T-38 supersonic jets and scientists leg up after it.

Some planes are not permitted to fly over the land because due to their noise level and high speed. After this engineer is trying to create high-speed jets with less noise pollution. Lockheed Martin and Skunk Works are trying to build X-59 Quiet Supersonic Technology. The plane with March 1.3 is allowed to fly at 55,000 feet.

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Techopedia

Environment Pledge: Cut Off On Luxuries To Save The Planet From Climate Change

environment pledge

Today’s luxuries are tomorrow’s necessities and to afford those necessities a lot needs to be compromised. The efforts one put in to provide oneself with all the luxuries, has an impact not only on his life style but also on the surroundings and the environment as a whole. To save an environment pledge from negative impact of activities at individual level is important to achieve global goals.

Travelling across the borders, getting yourself expensive items, luxury cars, keeping your house warm, centrally air conditioned buildings, all these activities have an impact on environment, one way or the other. Travelling a lot needs more fuel to burn, which means an added volume of greenhouse gases into the atmosphere, ultimately adding to your carbon footprint. The more the luxuries you provide yourself with, the more you add to your carbon footprint.

The poor suffer the most from climate change although they contribute least to the climate change and have lowest carbon footprints. The carbon footprint calculated of the richest 1% is 175 times greater than the poorest 10% in the world, as is estimated by Oxfam.

Therefore, it is debated that rich can contribute to a great extent to alleviate the worsening climate conditions. Following are some ways how they could have an effect.

Expend Smartly

The way the rich spend money has greater impact than the way the poor do. Bigger bank balances may help the rich to have flexible ways to spend their money and invest in environment friendly products. By altering little the way they live, rich can bring a great change and slow down the climate change.

It is easier for the wealthier people to pay for the products that are climate friendly. Consume new sustainable items in trial phases to build their market. Switch to renewable and sustainable energy sources for example, utilizing the solar energy and setting up solar panels for their electricity needs, avoid travelling if not necessary to save fuel as flying accounts for more than half of one’s carbon footprint.

Smart Investment: Divestment

Wisely investing the money in industry having less harmful impact on climate, rich people may bring about a positive change. Withdrawal of capital investment from industries that have bad influence on environment is termed as divestment. Contrary to the past, the trend is shifting from investing in fossil fuel industry to environment friendly sector.

environment pledge

Green News Ireland

Those who promised to divest from fossil fuel include 59, 000 wealthy individuals and 1, 100 such organizations working in collaboration with environmental activist groups. There is also an ongoing online campaign to promote this trend with the name DivestInvest.

The charitable organization of influential Hollywood actor Leonardo DiCaprio has raised $100 million to fight against climate change. He assured on his and his organization’s behalf to divest from fossil fuels. Likewise, there are many other well off people including the 22 from the Netherlands who vowed to divest their capital from oil and gas sector.

This disinvestment trend may prove to be useful in the longer run as the investors who do not have environmental concerns follow the investment inclinations of influential investors.

Money means Influence

Where poor can do a very little about sustainability and bringing about a change regarding climate conditions, rich not only have wealth but they also have political influence to initiate some positive climate policies.

Wealthy people by using their social links and power can approach lawmakers and give funds to political parties to introduce environment friendly policies.

Charity Funds for Climate Research

Research and development for clean and sustainable energy requires a lot of investment and fund. The wealthy can support monetarily to such research and development. A few months back, some scientists unanimously wrote to affluent families and environmental activist groups to increase the funds to fight against climate issues.

In 2015, Bill Gates contributed with some $2 billion for research and development for clean and sustainable energy.

Similarly, organizing some band aid concerts can significantly contribute in collecting funds to deal with menace of climate change; in order to environment pledge.

environment pledge

Verizon

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Techopedia

Does Every Android/iOS App breaches Your Security Concerns, like FaceApp?

faceapp

Another way of sharing your new looks with your loved ones is to look old or young enough to impress your neighbors, huh? The FaceApp app has gone viral by Apple.

People are having great fun but still confused about few things:

  • Does it upload your camera roll in the background? No such evidence were found nor did security researcher and Guardian App CEO Will Strafach or researcher Baptiste Robert.

  • How it allows you to pick photos without giving photo access to the app, since you choose, “Allow FaceApp to access to Never”?

  • https://twitter.com/karissabe/status/1151276315816783873/photo/1

“It might store some uploaded photos in the cloud for “performance and traffic” reasons. It also said that while the app’s “core R&D team is located in Russia, the user data is not transferred to Russia”, FaceApp reacted to the controversy.

People got worried and started to call out that FaceApp is Russian. “The app that you’re willingly giving all your facial data to says the company’s location is in Saint-Petersburg, Russia,” tweeted the New York Times’s Charlie Warzel. We all are very well aware of the facts that how and what Russians are. They want to harvest your data for wicked purposes. Unlike American techies, of course. Who are always deeply respectful when it comes to personal data, and only use your private information to make the world a better, more connected, place.

“Perpetual, irrevocable, nonexclusive, royalty-free, worldwide According to FaceApp’s terms of service, indirectly grant it whenever you use the app.

One-point Matthew makes that stands out:

“While the app does indeed let you pick a single photo without giving it access to your photo library, this is actually 100% allowed by an Apple API introduced in iOS 11. It allows a developer to let a user pick one single photo from a system dialog to let the app work on.”

“My frame of reference for them came from reporting i’m doing on diff apps accessing data/ sending it places we wouldn’t assume (3rd parties, not govts),” Wurzel deleted his tweets about FaceApp, when he realized that the tweet is being misunderstood by audience/users.

faceapp

The Geek Herald

“BE CAREFUL WITH FACEAPP….it immediately uploads your photos without asking, whether you chose one or not”, Joshua Nozzi, a software developer, warned people.

As it was mentioned by the developers that the purpose behind such activities is not to harm or put in danger any human being.

“Google researchers disclosed that they used at least 8 million user images to train face recognition. And Facebook researchers mentioned using at least 10 million users.”, Adam Harvey, a privacy expert.

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AI versus humans: 5 Poker Professionals beat in the Texas Hold’em Tournament

poker
  • Facebook just came out with its own version of the “best” poker player!

  • The AI group has developed a program that beat 5 human professionals in a single game in the Texas Hold’em tournament, which has never been achieved before.

  • The purpose of this activity is to apply the generic techniques and observations to all other AI problems working on the principle of “hidden information” that need to be processed.

Just when you thought Facebook Inc. is only the largest social network in the world, it comes up with its own ‘ALLEGEDLY’ world’s best poker player.

This new player is none other than the latest artificial intelligence program known as Pluribus which was developed in collaboration with Carnegie Mellon University. The program got the best of its 5 professional adversaries in the Texas Hold’em tournament. The system was able to reap profits of around $1,000 per hour using $1 chips after 10,000 hands, which is classified as a conclusive margin of victory.

You may ask what’s new in this? Since AI has been known to compete and win against humans in recent years. Well, the previously developed technologies were able to compete with only a single player. But this program is able to beat 5 humans playing simultaneously in a single game which of course comes with its own complications and bluffing techniques.

There is probably no other game which consists of the challenge of “hidden information”, which means that each player is restricted to the knowledge of only his or her cards which is inaccessible by all others. If a program is meant to be successful at such a game, it should be able to process the accessible information and the lack thereof while also being able to pick appropriate yet unpredictable actions.

Why poker? Out of all the possible issues Facebook is facing, which includes posting of fake, controversial and dangerous content, why choose creating a poker superstar? The live terrorist shooting video that was posted in March had been re-posted 1.5 million times, with Facebook’s AI system not being able to detect it more than 205 of the time. Where exactly are we going with poker then?

poker

Science

According to Facebook AI Research, the goal of this poker bot program is not to develop AI for only such a restricted application or product. Elaborations of this development are given by Noam Brown who is one of the company’s leading researchers in the program. Noam says that the purpose of the group’s working is to look at AI in a broad spectrum, while using the observations in applications meant to solve industry-wide issues. Numerous other current AI problems including self-navigating car or understanding human negotiations work on the same principle of hidden information which needs to be accounted for by the system. And these aspects are quite similar to what’s going on in poker.

So the bottom line is that the techniques being developed and used in the poker bot have general applications in solving major problems in the industry and that is in fact the goal of this program.

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