Tennis has always looked to awe us. Ever since the beginning of open era, players like Rod Laver, Bjorg, Connors, McEnroe, Lendl, Sampras and presently Federer and Nadal have impressed us with their brilliance. We have literally passed out over their magic. The way they play those unbelievable shots from death, the muscular streak in few of them, the poise in others, the fluid backhand grace and drop shots that have marked few and the brute power that has defined others. Overall, tennis has been a very tempting sport.This has often kept the instruments of the game at the backdrop. Even they have been very important in letting the game prosper as it has. Imagine what the stars would do without tennis racquets or balls or even tennis bags. You would never imagine if not being told, that a tennis racket holds a world in itself there are so many points to ponder. Professional racquets come with a thin beam width. This offers greater range and flexibility to a player even as it adds to the quality of drop shots. These give greater control over shots. These racquets are also ergonomic in nature.In terms of balance, a racquet can be head heavy or head light. It can also be evenly balanced. The racquet length is divided over 5 main specifications. They vary between 27 and 28 inches keeping a distance of .25 inches. Today, the sports is being strongly followed frown a young age. This is why there are many junior racquets as well. They come with lighter grips and area little smaller in sizes. Used racquets can be bought over many online stores at attractive prices.The strings of racquet are made of intestine of animals. The wooden frame is laminated. In fact, today the laminated wooden frame is being replaced by fiberglass or ceramic or even titanium for more sternness. Even gut is replaced by nylon today. The head of the racquet is slightly inclined to give it greater potency of hitting low shots or corner shots out of the court width.A tennis ball is another important accessory which is usually 6.7 centimeters in diameter and its color is yellow. Today, the tennis balls used in professional international tennis has many chemicals mixed with rubber to attain the desired consistency. Naturally, Southeast Asia is the top exporter of these balls as rubber plantations are most abundant here. The felt of the ball is its most costly part. The felt is being steamed to provide it greater power to combat wind and also offers it a lot of reduction in bounce.Tennis bags come in backpacks as well as 12 size bags. Top global companies like Nike, Adidas, Dunlop, Wilson, Head and others are producing high quality bags to let a player feel comfortable with his package. In terms of size, there are 3 racquets, 6 racquets, 8-12 racquets, duffle gears and wheeled tour accessory bags. They are available online over many reputed outlets today.
The Best Books on Cryptocurrency
The Sovereign Individual ~ by James Dale Davidson and William Rees Morg
The Sovereign Individual is one of those books that forever changes how you see the world. It was published in 1997 but the degree to which it anticipates the impact of blockchain technology will give you chills. We’re entering the fourth stage of human society, shifting from the industrial to an information age. You need to read this book to understand the scope and scale of how things are going to change.
As it becomes easier to live comfortably and earn an income anywhere, we already know that those who truly thrive in the new information age will be workers who are not tethered to a single job or career and are location independent. The pull to choose where to live based on price savings is already more appealing, but this goes beyond digital nomadism and freelance gigs; the foundations of democracy, government and money are shifting.
The authors predicted Black Tuesday and the collapse of the Soviet Union, and here they foresee that the rising power of individuals will coincide with decentralized technology nibbling away at the power of governments. The death toll for the nation states, they predicted with extraordinary prescience, will be private, digital cash. When that happens, the dynamic of governments as stationary bandits robbing hard-working citizens with taxation will change. If you’ve become someone who can solve problems for people anywhere in the world, then you’re about to enter the new cognitive elite. Don’t miss this one.
Choice Quotation: “When technology is mobile, and transactions occur in cyberspace, as they increasingly will do, governments will no longer be able to charge more for their services than they are worth to the people who pay for them.”
Sapiens: A Brief History of Humankind ~ by Yuval Noah Harari
Whenever I want to impress on someone how good this book is, I ask: “Do you want to know the fundamental difference between humans and monkeys? A monkey can jump up and down on a rock and wave a stick around and screech to his friends that he’s seen a threat coming their way. ‘Danger! Danger! Lion!’ A monkey can also lie. It can jump up and down on the rock and wave a stick around and screech about a lion when there is, in fact, no lion. He’s just fooling around. But what a monkey cannot do is jump up and down and wave a stick around and screech, ‘Danger! Danger! Dragon!’”
Why is this? Because dragons aren’t real. As Harari explains, it is human imagination, our ability to believe in and talk about things we have never seen or touched that has elevated the species to cooperate in large numbers with strangers. There are no gods in the universe, no nations, no money, no human rights, no laws, no religions and no justice outside the common imagination of human beings. It is us that makes them so.
All of which is a rather magnificent preamble to where we are today. After the Cognitive Revolution and the Agricultural Revolution, Harari guides you into The Scientific Revolution, which got underway only 500 years ago and which may start something completely different for humankind. Money, however, will remain. Read this book to understand that money is the greatest story ever told and that trust is the raw material from which all types of money are minted.
Choice Quotation: “Sapiens, in contrast, live in triple-layered reality. In addition to trees, rivers, fears and desires, the Sapiens world also contains stories about money, gods, nations and corporations.”
The Internet of Money ~ by Andreas M. Antonopoulos
If the two books mentioned above help us to understand the historical context in which Bitcoin first appeared, then this book expands on the ‘why’ with infectious enthusiasm. Andreas Antonopolous is perhaps the most respected voice in the crypto space. He’s been traveling the world as a Bitcoin evangelist since 2010 and this book is a summary of talks he gave on the circuit between 2013 and 2016, all tightened up for publication.
His first book, Mastering Bitcoin, is a technical deep-dive into the technology, aimed more specifically at developers, engineers, and software and systems architects. But this book uses some choice metaphors to explain why you can’t ban Bitcoin or turn it off, how the scaling debate doesn’t really matter and why Bitcoin needs the help of designers to lock in mass adoption.
“When you first ride your brand new automobile in a city,” he writes, “you are riding on roads used by horses with infrastructures designed and used for horses. There are no light signals. There are no road rules. There are no paved roads. And what happened? The cars got stuck because they didn’t have balance and four feet.” But fast forward one hundred years and the cars that were once ridiculed are absolutely the norm. If you want to swim around in the philosophical, social and historical implications of Bitcoin, this is your starting point.
The Significance of Pure Air Inside Your Home
Have you ever climbed up mountains? If so, what do you do when you reach the top? Most people open their arms, close their eyes, and take a deep breath. That is the special thing about clean and fresh air. You feel like taking a pause and inhaling fresh air. Over the past year, we have faced several waves of coronavirus. These days, we have been warned about another wave of this virus. Therefore, the importance of clean air has been increasing day by day. In this article, we are going to find out why air quality is important when it comes to our indoor environment.
The impact of pollution on your indoor air
No matter where you go, you will have to face the consequences of poor quality. Even if you are alone in your home, you will still be prone to polluted air. Every year, more than 1 million people lose their life because of air pollution.
According to some reports, India is among the top 10 countries in the world with the worst air quality. The effect of polluted air is more evident as people spend over 90% of their time inside their homes. Another research study found that residents are at a greater risk of covid-19.
As a matter of fact, indoor air pollution has become an international concern. We can say that pollution levels inside and in closed spaces are up to five times higher. Since most pollutants are not visible to the naked eye, you may not be able to aware of the dangers of dirty air.
Indoor air pollutants may be generated by common household items, such as cleaning agents, cooking fuel, furniture polish, pet dander, and paint. Apart from this, domestic appliances such as refrigerators and heaters may also be the common source.
Since homes are not airtight, air pollutants can easily get in. For example, smog, smoke, mold spores, and dust can get into your house through your windows or doors. Air conditioners can be used to cool down your rooms. But the downside is that they can also boost the movement of pollutants across your house.
What can you do to purify your indoor air?
Basically, air purifiers are simple devices that receive dirty air and put it out after passing it through powerful filters. Nowadays, you can choose from hundreds of air purification units available in the market. They are based on a wide range of technologies. They are available in different sizes to cover rooms of different sizes.
Nowadays, most types of air purifiers depend on HEPA technology. Initially, this technology was introduced in the 40s in order to capture pollutants from the air. Although these filters have been used for the filtration of particulate matter, they may not be that effective when it comes to eliminating volatile organic compounds.
Therefore, if you are worried about your health, we suggest that you invest in a type of device that comes with a HEPA filter. With these units, filtering your indoor air will be a piece of cake. Therefore, you can count on these devices to and ensure clean air inside your house.