What Is Dark Energy and How Does It Work?


What Is Dark Energy and How Does It WorkWhen you do post a ball into the air, it slows down gradually, stops somewhere in mid air, and then starts falling and eventually to the ground. Suppose you throw the same ball to the air, and instead of it falling to the ground, it accelerates to the sky. This is what scientists are investigating with vigor; a phenomena that happens to the entire universe. It is believed that dark energy can accelerate the expanding rate of the universe.

What Is Dark Energy?

The term dark energy refers to an entity (a strange entity), that makes up the majority of the mass-energy density of the universe. Dark energy is studied under astronomy and physical cosmology. However, one should note that dark energy is still a mysterious concept and it is still under investigation. In fact, the main reason why it is known as dark energy is because there is little information and consensus about its nature and functionality.

Evidence for Dark Energy

The following shows the evidence for dark energy:

– Measuring the shape of the universe through the radiation of the cosmic microwave background (the density of the mass energy is 27 per cent. So what is the missing 73 per cent? It could be dark energy).

– Supernovae observation (a strong explosion that takes place when a massive star gets to the end of its life).

– The cosmological constant, otherwise known as the vacuum energy, has explained observations through the vacuum energy density.

How Does It Work?

What Is Dark Energy and How Does It WorkWhereas “normal” matter slows down the rate of acceleration, dark energy does the direct opposite of that; acceleration. This is attributed to its negative pressure. One of the day to day examples of negative pressure is an inflated tire or even a balloon that pushes out to the membrane that encloses it.

Einstein relativity states that both energy and pressure have a significant contribution to gravity. Dark energy possesses a strong negative pressure that the ultimate effect is not a push but a pull.

The universe’s rate of expansion is a timescale, and not speed. Similarly, velocity of galaxies is proportional to its distance, and therefore its not a constant figure.

In 1998, scientists realized that stars were actually dimmer than typical and previous results. The only explanation to this theory is that the stars were at a further distance than previously thought. Another deduction states that in normal gravity applies in small scale, but in large-scale, the repulsive force of gravity applies, in other words, dark energy.

Another thing to note about dark energy is that it was small in size 13.7 billion years ago. However, today, the dark energy takes a significant portion in the universe. It will be interesting to see what cosmology will come up with regarding the future of dark energy.


Albert Einstein observed that the concept of an empty space is not nothing after all. In addition to that, astronomers believe that the empty space has the ability to possess energy of its own. However, scientists are facing a number of challenges in the study of dark energy. For example, it is very difficult to carry out lab tests on the same due to the problem of isolating it. Despite that, scientists are hopeful that they are going to have more comprehensive findings on dark energy.

How to Design Energy Efficient Lawn at Home?

Lawns are beautiful because they add life to your compound. They also improve the air quality around your home. For example, did you know that an average lawn stores more than 136 kilograms of carbon each year? That means it can help you conserve the environment. A lawn can also be a way of saving energy. Therefore, creating an efficient lawn is good for you because it will help you save a lot of water and money. The question is how to design energy efficient lawn at home? Well, here is how you can do it.

– Grow Trees in Strategic Areas of the Lawn

How to Design Energy Efficient Lawn at HomeTrees play a role when it comes to conserving energy in your home. First, they provide your home with shade during the hot season. Then they act as windbreakers during the cold months. That means you will not use your air conditioning system as much as you did in the past.

More importantly, trees lower the temperature of your lawn. In effect, a lawn with trees is six degrees cooler on a sunny day than a lawn without them. Therefore, the three-shaded one will need less watering than the one without shade from the sun. In other words, you require a limited amount of energy to pump water for your lawn if you plant trees on it strategically.

– Install a Rotor Sprinkling System

How to Design Energy Efficient Lawn at HomeThe average family consumes 1, 211 liters of water each day. More than 30% of this water goes to outdoor uses such as watering the lawn. Pumping this water for outdoor uses takes a toll on your utility bill. Installing a rotor sprinkling system would reduce this cost. This system waters your lawn at a slow rate, unlike spray systems. This reduced rate of watering your lawn means that the wind will not carry off the water droplets as they rise in the air. Instead, most of them will reach the ground allowing the soil to absorb the moisture.

– Create a Deck, Patio, or Walkway on Your Lawn

How to Design Energy Efficient Lawn at HomeConserving energy is possible if you would reduce the thing that is leading to the consumption of energy. In this case, you can reduce the size of the lawn. Consequently, you would use less energy to pump water than you used in the past. That would happen because the volume of water required to water the lawn would have reduced. Additionally, decks, patios, and walkways add to the aesthetic beauty of your compound. They also increase the overall value of your home.

– Install Smart Sprinkler Systems

How to Design Energy Efficient Lawn at HomeDid you know that more than 50% of the water used to water lawns goes to waste because of evaporation, water runoff, or wind gusts? Installing a smart sprinkler system can reduce such waste. For example, soil sensors can determine the status of your soil and as such, adjust the watering levels to suit it. The sprinklers can go on and off automatically so that you do not waste any water. Some of these systems can even water your lawn depending on the local weather forecast in your area.

Interesting Facts About Microsoft HoloLens


Interesting Facts About Microsoft HoloLensThe Microsoft Corporation investors and technology enthusiasts will appreciate that the Microsoft HoloLens is one of the most fashionable and high tech gadget to own. Though not yet released, Microsoft has heavily invested in a strong developmental phase which will ensure that the final product is as good as the initial plan. Here are interesting facts about Microsoft HoloLens that are worth looking at.

Facts About Microsoft HoloLens

The Product is Not About Virtual Reality

Interesting Facts About Microsoft HoloLensThe product’s headset falls under the category of Augmented Reality (AR) and not Virtual Reality (VR). This means that it does text and graphic projection at the top of real world using holographic lenses. The images can be 3D meaning that one will be in a position to manipulate them to suit the purpose. Moreover, the images are not only full-color but also multi-dimensional. Such features give it a magical performance.

You Do Not Need a Computer to Make Use of the Product

Many of the headsets require the use of computers. The Microsoft HoloLens works independently. Just like the way digital libraries and books drastically reduced the use of hard copies, so will the Microsoft HoloLens reduce the need for computer monitors. The product is more or less a computer in itself- with an independent CPU and GPU. In addition to that, it can track the hand gestures as well as what you are doing. Microsoft has made a presentation on what clients should expect.

HoloLens Has Ample Gaming Opportunities

Interesting Facts About Microsoft HoloLensHoloLens is designed as a consumer-oriented product that aims at meeting the needs of the clients. In its development phase, Microsoft is keen on having a well-developed gaming component for the product.

One of the greatest advantages with gaming with HoloLens is that you have an expanded motion. Moreover, you are going to be able to see what is around you in a better way. It should be noted that HoloLens has a high level of aesthetics.

The headset can stand alone and this promotes a better interaction with the games. There is also a high chance that there will be more integration with more fun games in the future.

Cost and Availability

The company stated that the product will be available in the market “in the next year.” As per now, it is not known the exact release date or month.

The headset will cost $3, 000 and the developer edition). Though this might seem expensive, the hardware that is available before the actual production begins is often uncommon and expensive.

The Use of Kinect Censors

Interesting Facts About Microsoft HoloLensKinect censors understand the human identity, the human speech, and understand the gestures of a human being. This plays a critical role in exploiting the many uses of the product. In addition to that, the gaze control option is going to help you sample various objects. You can use the available voice command in order to bring or eliminate objects as you desire.

Aspiring users should note that the product not only allows you to explore the screen but also beyond. Take for instance, a user can do mountain climbing in mars in a way that resembles the real mountain climbing.

Sound and Spatial Mapping

When the user leans closer, the sound is supposed to get louder. This lets you have a more realistic landscape. Again, suppose you are smashing objects one by one, you are going to hear the same sound of objects being smashed.

Universal Apps

As stated earlier, the HoloLens is a versatile product. In this regard, it is quite compatible with universal apps. In particular, windows 10 users do not have to worry about the compatibility as it is compatible.


The HoloLens is a unique product in that it will be the first product to employ both the real world as well as virtual reality. It is going to help you have a new view of the world and expand your mindset.

However, all the details are not clear, and the price and specification is just an approximation. Again, there is the question of the level of immersion in relation to other realities, a question that has not been answered yet. Despite that, the product remains a unique Microsoft release. Overall, the Microsoft HoloLens is going to make your living room lively and fun.

How Does a Wind Turbine Work?


How Does a Wind Turbine WorkIn the search for minimizing the use of fossil fuels, households as well as commercial enterprises are appreciating the use of renewable energy for sustainable energy use. Wind energy is one of the best options in renewable energy. When harnessing wind energy, there is a need of conversion of kinetic energy to electrical power, and this is done using a device known as a wind turbine. Wind power is one of the simplest forms of harnessing electricity- all you need is a windy area and plugging the turbine into electric power.

It is not overly difficult to understand how a wind turbine works. In this regard, it is recommended that you gain some knowledge about how a wind turbine works.

The Basics

How Does a Wind Turbine WorkA turbine is a machine, which through spinning traps the energy that is passing by and transforms it into a more useful form of energy- electricity. In general, it is the grind which later turns to electricity.

There are two main designs of wind turbines: the horizontal-axis and the vertical-axis. On one hand, the vertical axis turbine produces less noise and is placed lower on the ground.

It is most suitable for residential places. Another great advantage with this option is that they are versatile and can be used in cases of unstable winds. On the other hand, the horizontal axis wind turbines is most suitable in a large wind project. However, it is heavy and does not produce optimal energy in case the wind is unstable.

There are three main parts of a wind turbine: the tower that is used in connecting and anchoring it on the ground, the blades, and the nacelle. The nacelle is used to accommodate the generator. In quite a number of cases, a utility company places wind turbines in a row or groups in order to exploit as much energy as possible from the wind, such rows or groups are known in other words as wind farms.

In order to understand how a wind turbine works, note that it is the direct opposite of how a fan works: a fan uses electricity in order to make fresh wind, whereas a wind turbine uses wind in order to produce electricity.

The wind energy turns the propeller-like blades (two or three) around its rotor. The rotor is then connected to the shaft. The shaft then spins the generator and produces electricity.

The Blades

How Does a Wind Turbine WorkThe blades have a curved shape, just like an airfoil wing of an aeroplane. When wind passes through them, the blades rapidly spin. Consequently, energy is transferred from the wind to the turbine.

However, one should note that wind undergoes a great variation. These largely depend on vegetation, water bodies, as well as terrain. Similarly, the output of the blades and the turbine vary a great deal.

In case there is an emergency, or there is need to prevent wear and tear, there is an automatic breaking system.


With more innovation, the energy industry will witness more wind power opportunities and equipment. For example, there will be offshore wind turbines in the lakes as well as the oceans. There will also be more efficient wind turbines that are going to offer an even better service.

Best Eco-Friendly Kitchen Faucets Buying Guide

Eco-Friendly Kitchen Faucets

One of the most important issues in the world today is environmental degradation. For example, water is now a scarce resource with millions of people lacking access to safe drinking water. What can you do to change this sad fact? Well, you can start by installing eco-friendly faucets. More specifically, the flow rate of water from these faucets is low as compared to normal faucets. Here are the best eco-friendly kitchen faucets buying guide.

1. The Pfister Pfirst Series One

Best Eco-Friendly Kitchen Faucets Buying GuideDid you know that the flow rate from a normal kitchen faucet is 2.2 gallons per minute (GPM)? In contrast, the flow rate for this faucet is 1.8 GPM only meaning that you would save as much as 0.4 GPM per minute. Some kitchen faucet review blogs claim it to be one of the greatest faucet products available when taking into consideration material, function and price. If you are looking for top of the line quality Pfifster must make the top list.

Additionally, the Pfifster Series One is a pullout faucet, which means you can direct the water flow to where you want it to go. Doing so saves water because it would not flow freely as you gather the items you would like to wash or water. Instead, you would direct the faucet towards these objects if they were close to the sink. It is important to note that the Pfirst Series One is free of lead as per US statutes on safe drinking water.

2. The Moen 87450 SRS

Best Eco-Friendly Kitchen Faucets Buying GuideThis faucet has various features to limit the flow of water from it. For instance, it has a lever that operates with one handle only. The single-handle makes it easy for you to adjust the flow of water from the faucet as you use it. Moreover, the Moen 87450 SRS has a pause function that allows you to stop the flow of water temporarily as you do something else.

Sadly, many people leave the water running because turning the faucet off temporarily is inconvenient. In this case, the pause feature is easy to use and it will reduce your water consumption. Finally, The Moen 87450 SRS is a pullout faucet, which means you would minimize waste by reducing incidences of water splashing from the sink.

3. The Blanco 441509

Best Eco-Friendly Kitchen Faucets Buying GuideThe average weight for a high-end faucet is 4.5 to 6.5 pounds, but this one weighs 2 pounds only. That is an astonishing figure because the Blanco 441509 performs better than other faucets do despite its low weight. For example, it has a flow rate of 1.8 GPM, which is lower than the average rate among other faucets. In fact, the Blanco 441509 conserves about 18% to 20% more water than other faucets do. It is important to note that you can install it in one or three holes so you do not have to dismantle your current sink. The Blanco 441509 comes with a lifetime warranty.

4. The Delta 340 WE DST

Best Eco-Friendly Kitchen Faucets Buying GuideThe most captivating aspect of this faucet is its low flow rate of 1.5 GPM. That means it saves as much as 31.8% more water than normal faucets do. The spray system of this faucet is also efficient because it has Touch-Clean capabilities in addition to having an Integral Spray mechanism. The single-handle also makes it easy for you to adjust the flow-rate.

How Does Natural Outdoor Environment Impact on Health?

Natural Outdoor Environment

How Does Natural Outdoor Environment Impact on HealthThe indoor lifestyle pursued by millions of people around the world is not healthy. Currently, the average person watches three hours of television every day. He also spends close to one hour on social media each day. That adds up to a total of four hours on activities that promote an indoor lifestyle.

It is important to remember that the same person would spend the rest of his day sleeping and working. That means an average individual has little time for outdoor activities. Sadly, many people do not know how nature affects their well-being. They should ask, ‘how does natural outdoor environment impact on health?’

– Exposure to the Sun Increases Your Vitamin D Levels

You can get vitamin D from many sources including fatty fish, beef (liver), egg yolks, and cheese. Other sources include food items fortified with it such as soy-milk, cereals, orange juice, and some dairy products. However, the purest form of vitamin D comes from exposure to the sun. In fact, your body produces it when you expose your bare skin to the sun’s rays.

This mineral is critical when it comes to the absorption of calcium in your body. Without it, you would not have strong bones. It also helps you when it comes to fighting certain diseases such as cancer, cardiovascular complications, and osteoporosis.

– Outdoor Activities Improve Your Level of Physical Fitness

How Does Natural Outdoor Environment Impact on HealthThe world had 857 million obese people in 1980, but that figure grew to 2.1 billion in 2013. The primary contributor to this surge in overweight people over these 13 years is the pursuit of a sedentary lifestyle. This lifestyle encourages people to sit in front of their office desks, TVs, and computers while discouraging them from going outside their homes or offices.

The result is an increase in the rates of obesity, high blood pressure, and diabetes. What can you do to reduce your risk of developing these medical complications? Well, you can start by walking or running. Then you can try hiking, climbing, and canoeing among other outdoor activities.

– Nature Restores Your Mental Health

The world is cruel and unforgiving. Sometimes, the things people go through can be overwhelming and they can take a toll on their level of happiness. An individual’s mental state can also suffer terribly because of the ills of this world. Nature can restore your faith in humanity during such troubled times.

Being outdoors gives you the space you need to think clearly about your problems. It helps you to look at them objectively and without interference from outside forces. Mother Nature will not pressure you as you make your decisions so it is highly likely that you will make the right ones. By doing so, your mental health will improve drastically.

– Outdoor Activities Heal Your Body

How Does Natural Outdoor Environment Impact on HealthPeople take many drugs for their problems and some of them are addictive. Others spend too much time trying to heal their bodies while they are indoors, but doing so hardly helps. Nature is the best medicine. It increases your energy levels as you breathe in the fresh air that is around you.

It causes relaxation in your nervous system because the environment is calm and pleasant. It also increases your level of stamina, as you would feel free to do the things you could not do while you were indoors. The changes that occur in your body because of your presence in the great outdoors promote your health.

Key Things to Know About Bitcoins


Key Things to Know About BitcoinsOne of the greatest innovations made in the contemporary society is perhaps the advent and successful use of the internet. The financial industry has seen a significant use in the use of digital technology. One of the digital currency options in the modern financial sector is the use of bitcoins. In this light, it is worth being familiar with key things to know about the bitcoins.

What Is Bitcoin?

To start with, bitcoins is one of the forms of the current digital currency. It is not controlled by any entity or individual, and it is not printed like the normal currency. On the contrary, it is under production by a business or an individual through the use of software that is heavily used in mathematical calculations. Bitcoin is under the category of money that is referred to as cryptocurrency.


Bitcoin was created in 1999 by Satoshi Nakamoto (an unknown person). He had stated that he was living in Japan and was 37 years old. However, some of the coded words he used in the programs could as well mean that he is from a commonwealth country. In fact, his schedule of posting could mean that he was following a North American time zone. He had published a research paper in 1998 which gave a detailed description of a new digital currency. However, he later disengaged himself from the new project and transferred the control of bitcoin to Gavin Andresen.

How to Acquire Bitcoins?

Key Things to Know About BitcoinsAs stated earlier, there is no printing of bitcoins. One major way of acquiring bitcoins is through discovering them where computers do a competition among themselves. The threshold for creating bitcoins is 21 million of them, with the option of doing a breakdown to smaller amounts. On average, a miner is awarded 25 bitcoins after every 10 minutes.

Generally, mining is done throughout. However, one is supposed to do some basic tasks such as feeding them to a ledger as well as confirmation. Bitcoin has sufficient systems that are used to detect fake transactions. Also note that you cannot reverse a bitcoin transaction. The only thing that can be done is that the recipient can refund the reward. Consequently, you should be more careful with your transactions because reversing them is not easy.

Another way of acquiring bitcoins is through what is referred to as the bitcoin exchange. This is a platform that allows buying and selling of bitcoin through the use of different currencies. The largest platform for acquiring bitcoins is Mt. Go a bitcoin exchange firm which is based in Tokyo.

The Stability of Bitcoins

At the moment, bitcoins is a highly volatile and unpredictable asset. There are several factors that contribute to this. These include illiquid markets, novel nature, and a young economy. In connection to this, they drastically change in value in a short period of time. Thus, only store bitcoins that you are confident that will not adversely affect you, should you lose it.


The increase in the use of technology has led to a greater campaign in the use of digital currency. Bitcoin stands out as one of the most significant alternative currencies. When using it, you are not restricted from using any name that you wish to use. Again, it does not carry transaction fees. Overall, bitcoins is gaining ground among the people who are looking for alternative currencies.