A large asteroid will be approaching Earth in just few days

NASA has released a warning on an asteroid that is considered to be “potentially dangerous”. The space object is called 2016 NF23 and it will pass near our planet on August 29, at a distance of 13.4 times the distance between the Moon to Earth. That’s more than three million miles (4.8million km) or just 0.03377 astronomical units

In astronomical terms, this means that it will pass near us, hence the cataloging of the asteroid as “potentially dangerous”.

The asteroid has a speed of over 20,000mph or nine kilometers per second, and its diameter is between 70-160 meters.

In recent years, NASA experts have been trying to detect dim and smaller asteroids, which are about 140 feet in diameter. Although these space objects are harder to observe, they have a potential impact would prove catastrophic. However, astronomers argue that over 90% of large asteroids with a diameter of more than 1 km have already been discovered and they are monitored constantly.

How to Recover files deleted with Empty Recycle Bin function

Most operating systems have a recycle bin that acts as a fail safe. It gathers all the deleted files and keeps them there until you decide what to do next. You can restore some of the files in the recycle bin (trash) or you can empty the Recycle Bin. Now, here comes the funny part. Once you decide to empty the Recycle Bin (trash), those files are deleted for good and you will not be able to recover them easily. Sure, you might say that no one makes the mistake of sending a file to trash and later emptying the Recycle Bin without verifying what’s inside. In real life, people are in a hurry and they usually discover that they’ve deleted crucial data by doing this very mistake: Delete -> Empty recycle bin.

Do not create new contend on the disk

So, what can you do in this situation? You will find many tutorials and small apps on the Internet that will try (some of them even succeed) to get your files back. But before talking about that, I want to let you know that there’s a catch. If you understand how computer storage works, you will learn that the best way to act once you have deleted a file is not to create any more content on that particular hard drive. When a file is deleted with the “Empty Recycle Bin” function, the operating system is not really removing the content, but rather its reference / header. So, although the information is there, its space on the disk is mark as “usable”. Because its reference (header) is missing, the operating system will no longer show you the file and is waiting for you to create new data that will be stored in that particular space. That’s why it is important not to create new content.

How to Recover files deleted with Empty Recycle Bin function

As I said, you will find plenty of apps that will do the job for you. Some of them are plain simple, some require a minimum level of computer skills and some are pretty difficult to operate with. Now, since this is a subjective approach to the topic, I will try to filter all the noise and give you the solution that worked for me best in most cases: EaseUS Data Recovery Wizard 12. After trying few alternative apps, I settled for this recycle bin recovery solution for these reasons:

  • The interface is simple and intuitive
  • The free version allows you to recover up to 2GB of data
  • I managed to recover the highest percentage of deleted content with this app
  • There is an organizer that allows you to filter the discovered files and recover just the files you need
  • The preview function that allows you to preview the content of each file.
  • There is a “Save session” function that saves a lot of time, especially if you have not completed the recovery process and you need to continue the next day.
  • This particular recovery software works great for recovering content from memory cards and corrupted memory cards

EASE-US-RECYCLE-BIN

The steps you need to take in order to recover deleted Recycle Bin files

  1. Open EaseUS Data Recover
  2. Select the partition where the operating system is installed (usually that’s C:)
  3. Click the Scan button
  4. Wait for the scanning process to complete
  5. Click the Filter button and choose Recycle Bin results
  6. Select the files you want to recover and press the Recover button
  7. Select a location on the disc and click OK button.
  8. Enjoy your recovered files

How to avoid deleting important files on your computer?

As you may know, it’s better to prevent than to treat a problem, but people learn this the hard way. The best way to keep your important files away from Recycle Bin is to organize and backup. In other words, you should keep your desktop clean and move files in folders. Try to backup folders that include important files as often as you can. You can use various free cloud solutions like DropBox, Google Drive or even Box.net. You never know when that backed up data may save your life!

Top 5 video projectors of 2018 based on image quality and price

In this article I will try to answer few questions regarding video projectors. What can you do with a video projector? What is the best video projector and how to choose one?

A video projector allows you to organize document presentations, pictures, videos and to watch movies. By using a video projector, you can also play games and enjoy a cinematic experience at the same time. In other words, the possibilities of using such a device are almost limitless. But in order to fully enjoy them, you need to know how to choose a good video projector without spending too much money.

Best Video Projectors: content-dependent types

There are 4 main types of content that can be presented when using a video projector: presentations (text based), video, pictures and games. Most of the video projectors handle all types of data, but some are better for movies, while others are specially designed for business presentations. This is the reason why home electronics stores exhibit projectors divided into two major categories: business video projectors and home video projectors. The first category works great with displaying PowerPoint presentations, PDF files, Excel and more. The projectors  designed for home usage are primarily designed for movies and posters.

When we have decided to create this top containing the best video projectors you can buy, we have focused our attention on Home units. They perform better with document presentations than business projectors perform with movies.

There are 3 projection technologies used for video projection: LCD, DLP and LCoS.

1. LCD or liquid crystal display – is a technology coming from TVs. The LCD projectors use three panels of crystals, each designed to create images using one of three primary colors: red, green or blue. At the simultaneous design of the 3 images, a common color image is obtained.

2. DLP or digital light processing – involves the use of a micro-chip chip that reflects the light to the screen or to the opposite direction. Colors are obtained thanks to a rotated filter with three basic colors, which rotates in front, creates the range of colors needed for the image. There are DLP video projectors that use 3 chips, one for each base color. This decision solves the problem of the rainbow effect of single-chip units, but it is more expensive.

3. LCoS or liquid crystal on silicon – is a somewhat hybrid technology, where light is reflected by micro-glows – like DLP, and light blocking takes place with liquid crystal – like the LCD. The LCoS video projectors offer the best picture, but the price is a bit on the pricey side.

LCD vs. DLP vs. LCoS – which is the best video projector?

If we are talking about video projector having the best contrast, the winner is the LCoS. There is a constantly fight for the second place, and the DLP units seem to lose their position, especially since the LCD projectors have exhibited outstanding performance lately.

If you plan to buy a video projector with best brightness, you should go for a DLP or a LCD video projector. Talking about the most beautiful colors on a video projector, it’s difficult to pinpoint a winner. There is a tie between them three, mainly since the performances depend on each projector individually.

Best Video Projector: Resolution

Ideally, the native resolution of a video projector should be identical to the resolution of the tracked content. If you plan to use the video projector for projecting movies, you should get one with a 16:9 or 16:10 resolution. If the budget is not an issue, you should get a projector with 1080p resolution. It should allow you to watch the movies you love at the highest clarity. But these type of projectors are not cheap, so if you are on a tight budget, you should go for the next best thing: 720p or 800p video projectors.

Top 5 video projectors of 2018 that you can buy right now IN EUROPE

BenQ 3D TH683

1. BenQ 3D TH683

This device is built around DLP projection technology. It offers a 10000: 1 contrast and a native resolution of 1920 x 1080 with a 16: 9 aspect ratio. The minimum diagonal it can project is 1.47 meters and the maximum diagonal – 4.41 meters. TH683 has 3D capability, a 10W speaker and a lamp expected lifetime of 10,000 hours. On the back, we find two HDMI connectors, Audio in and out, composite input, RS232C, one VGA input, 1 USB, 1 USB B, 1 MHL.

Pros:

  • Native resolution 1080p, great for movies and videos
  • Compared to other units, the lamp has a long lasting life
  • The projected images are crystal clear
  • The rainbow effect is not noticeable
  • Rich and vibrant colors
  • Fair price for quality
  • Easy to use
  • Silent operation
  • It features a built-in 10W speaker

Cons:

  • It has support for 3D content, but it requires additional 3D glasses.

BenQ MW533

2. BenQ MW533

This video projector feature a DLP projection technology. It offers a contrast of 15,000: 1 and a native resolution of 1280×800 with an image aspect of 16:10. The minimum projection diagonal is 1.52 meters and the maximum projection diagonal is 7.63 meters. This projector has 3D capability, 3300 Lumens and an estimated lamp life of 4500 hours. BenQ MW533 features USB, connectors – 2 HDMI, Audio in and out, composite input, RS232, two VGA, USB.

Pros:

  • This projector offers high brightness
  • Clear pictures
  • Bright colors
  • It has two integrated speakers of 2W each
  • It has support for 1080 content
  • Decent price.
  • USB port

Cons:

  • Users reported that it can get a bit noisy sometimes
  • The lamp has an average lifespan
  • It has support for 3D content, but it requires additional 3D glasses.

OPTOMA HD183X

3. OPTOMA HD183X

Specifications: DLP projection technology, contrast – 25000: 1, native resolution – 1280×800, image aspect – 16:10, minimum diagonal – 1,50 meters, maximum diagonal – 10 meters, 3D projection, 3000 lumens, lamp lifetime – 10,000 hours, connectors – HDMI, Audio in and out, composite input, RS232C, VGA, USB.

Pros:

  • Very high contrast for a video projector
  • Compared to other units, the lamp has a long life
  • The rainbow effect is not noticeable
  • It supports 1080p content
  • High Quality images
  • Easy to use
  • Silent operation
  • It has USB input

Cons:

  • It has support for 3D content, but it requires additional 3D glasses.
  • It has a single HDMI input
  • It is not cheap

4. Epson EH-TW5400

Specifications: LCD projection technology, 30000: 1 contrast ratio, native resolution – 1920×1080, 16: 9 aspect ratio, minimum diagonal – 0.80 meters, maximum diagonal – 8.43 meters, supports 3D, 2500 Lumens, lamp life – 4000 hours, connectors – 2 HDMI, Audio in and out, composite input, VGA, USB.

Pros:

  • High brightness
  • Very good contrast
  • Bright colors
  • Native FullHD resolution
  • It features an integrated 5 watt speaker.
  • Very clear pictures

Cons:

  • It is expensive
  • The lamp has a modest life
  • It has support for 3D content, but it requires additional 3D glasses.

Epson EB-W42

5. Epson EB-W42

Specifications: 3LCD projection technology, contrast – 15,000: 1, native resolution – 1280×800, image aspect – 16:10, minimum diagonal – 0.83 meters, maximum diagonal – 8.12 meters, no 3D capability, 3600 lumens, lamp life – 6000 hours, connectors – 1 HDMI / MHL, Audio in and out, S-Video input, VGA input, 1 USB port.

Pros:

  • Very good brightness
  • Clear pictures
  • It has two integrated speakers of 2 watts eac
  • Easy to use

Cons:

  • It can display content only in native resolution
  • It does not support 3D
  • Modest lamp life
  • There are some mixed reviews about it

CV-1: The retro-inspired electric car was presented at an exhibition near Moscow

The CV-1 electric car was inspired by a model made in the 1970s called Izh-Kombi (IZh 21252) and it was build by Kalashnikov. The company is the famous manufacturer of the feared AK-47 weapon, and it has lately tried to expand to other markets. It began to launch clothes, umbrellas, or cell phone covers and now electric cars.

CV-1: The retro-inspired electric

The maximum speed of CV-1 electric car is 80 km / h and the manufacturer hopes that it will be able to compete with Elon Musk’s Tesla. However, a company spokesman has not been able to show the potential advantages of this car over Tesla. The reasons behind the lack of arguments could be that the car is in a phase that’s far from mass production. Even so, the manufacturer does not hesitate to promote this car with the “electric supercar” slogan. It was stated that the car will “let us stand in the ranks of global electric car producers such as Tesla.”

The model has a range of 350 km per charge. So far, Kalashnikov has not announced when the electric car will be available or how much it will cost. It’s hard to believe that a car with such a retro design is able to compete with Tesla at a wold-wide level. But it may sell well in Russia, especially since Tesla has not sold many units in this country. Even so, it’s a huge step forward for a company that’s known for building weapons of destruction. It’s a great step forward for humanity!

CV-1: The retro-inspired electric from behind

image source: Kalashnikov

An alarming phenomenon will occur at the North Pole!

Due to global warming, the permafrost (the soil that should always be frozen) in the Arctic does not freeze anymore during winter. Thus, it remains damp and humming. Researchers have noticed this phenomenon and they draw attention to the danger this phenomenon pose.

Permafrost stores billions of tons of carbon, which will reach the atmosphere in the form of greenhouse gases: methane and carbon dioxide. The release of these gases will have add an extra speed to already accelerating climate warming. Experts’ warning comes after a study made by Russian researchers. Nikita Zimov coordinated a team of scientists who dug the soil in the Cherskiy area in northern Siberia. Here is one of the coolest places on the planet. During most winters, the average temperature drops to -34 degrees Celsius.

However, in April, when the excavations took place, the soil in the area was soft and damp, not frozen, as it was expected. According to estimates made by geologists, there are now more than 1,500 billion tonnes of carbon in the Permafrost. That is more than twice as much as the quantity found in the atmosphere.

If this particular soil melts, the microbes begin to consume the organic matter from it and thus release the carbon in the atmosphere, like methane gas and carbon dioxide.

In the same area where Professor Zimov did the study, a team of researchers at the Max Planck Institute in Germany found that the level of snow dropped up to 50% in the last 5 years.

The snow isolates the soil and protects it from heating, thus preventing its melting. The tests have shown that the temperature in permafrost, at a depth of 30 cm, has increased by 6 degrees Celsius in the period of time between 2013 and 2018. That happened due to the fact that the amount of snow above it has been greatly reduced.

Blue light emitted by smartphones and tablets can lead to vision issues

A team of scientists at the University of Toledo in the United States has revealed that prolonged exposure to blue light triggers the release of toxic molecules in photoreceptor cells that, in time, could lead to vision issues. In time, this can lead to macular degeneration, an ophthalmic disorder that causes destruction of central vision. In other words, the blue light, which has a shorter wavelength and emits more energy compared to other colors, can gradually damage vision.

Macular degeneration, a real problem

“We are being exposed to blue light continuously, and the eye’s cornea and lens cannot block or reflect it […] It’s no secret that blue light harms our vision by damaging the eye’s retina. Our experiments explain how this happens, and we hope this leads to therapies that slow down the process of macular degeneration, such as a new kind of eye drop,” said Ajith Karunarathne, assistant professor in the Department of Chemistry and Biochemistry of Toledo University.

Macular degeneration, which in the UK affects approximately 2.4% of the population, is a common disorder among people aged 50 or 60, resulting in significant loss of visual acuity. This condition is caused by the death of photoreceptors, light-sensitive cells present in the retina.

Senile macular degeneration is the main cause of vision loss in the United States and, although it does not cause total blindness, it has a significant impact on the day-to-day activities of people affected, such as reading or recognizing faces.

Photoreceptor cells require certain retinal molecules to sense light and trigger signal transmission to the brain thus forming the images. Scientists have found that retinal molecules introduced into other types of cells in the body, such as cancer, heart, or neurons, cause their death when exposed to blue light. They also noticed that neither this type of light nor the retinal molecules have an effect on cells if they act independently and are not associated.

“No activity is sparked with green, yellow or red light […] The retinal-generated toxicity by blue light is universal. It can kill any cell type.” said Dr. Karunarathne.

d-Alpha-Tocopherol is a naturally-occurring form of vitamin E

Researchers have discovered that a molecule called alpha tocoferol, a natural antioxidant found in the eye and the rest of the body, stops the death of cells but does not provide any protection for the elderly whose immune system is weakened. At this point the real injuries occur. People who want to protect their eyes from these unwanted effects are advised to wear glasses with lenses provided with both a blue light filter and a UV-resistant filter and also not to use mobile phones or tablets in the dark.

The study can be read on Nature magazine.

The weather will change radically in the coming years. How hot it will be

Researchers have concluded that average temperatures across the globe could be abnormally high between 2018 and 2022. The most important factor underlying this estimation is the multiplication of “extreme heat events” at the surface of the earth and water.

The study was conducted before the heat waves that led to the record temperatures that we’ve endured this year. But the unusually hot weather was correctly predicted by researchers who estimated for 2018 a high probability of heat abnormalities relative to the global warming effects. The study, published in the journal Nature Communications, was received for publication in January.

The new technique used o reach these conclusions is called Procast (Probabilistic forecast). It attempts to rationalize the chaotic behavior of systems, such as the Earth’s climate. The process involves collecting information from previous changes in a particular state of the system in order to calculate the probability chances of transitions to new future states. A retrospective test of the method accurately predicted the discontinuity (hiatus) of global warming from 1998 to 2013.

Scientists led by Dr. Florian Sevellec, of the Physical and Space Oceanography Laboratory at the University of Brest, France, noted: “What we found is that for the next five years or so, there is a high likelihood of an anomalously warm climate compared to anomalously cold”

The researcher believes that this will temporarily accentuate the long-term warming trend. The next warm period is associated with a higher probability of extreme temperatures to extremes. The canonical events affecting the surface of the water can increase tropical storm activity. According to NASA, 2016 was the warmest year on record, followed by 2017, 2015 and 2014.

Why are most airplanes painted white?

When it comes to airplanes, white is the primarily preferred color because it reflects the sun’s rays and radiation. Thus, since it is painted white, the airplane does not heat up inside as much. Also, this reduces the cost of cooling the cabin. White paint acts as a sort of “sunscreen lotion,” according to an aviation expert. Moreover, this color is better preserved over time.

Another reason why this color is preferred is the need to protect the composite materials used in the construction of modern airplanes. For example, the front part of the airplane is made of thin transparent plastic because it shelters the radar. The control surfaces are also made of composite materials. They are painted in white or light gray to protect them from the sun, which can affect their properties over time.

However, this does not mean that planes painted in other colors are dangerous. But they require significantly higher maintenance costs: more energy is needed to cool the cabin, and the paint degrades more quickly in direct sunlight. There have been companies like American Airlines, who have not painted their airplanes for decades. However, from time to time, the aircraft had to be polished because the aluminum tends to become matte and the cost of such a procedure is definitely not small.

Also, they are painted white for security reasons. A white airplane is easier to be spotted in the sky.

Movavi Video Editor Review

Seeing as it is now easier than ever to record high quality videos on smartphones and digital cameras – wouldn’t it be great to have a way to edit those videos as well? If you want to fix any video footage or even create content it is essential that you have a video editor you can rely on to get the job done.

The frequent problem that people face when trying to edit videos however is that many editors have a steep learning curve and are decidedly not beginner-friendly. That is one of the reasons why you should consider Movavi Video Editor instead.

An Intuitive, User-Friendly Video Editor

If you’ve used other video editors in the past you’ll notice just how different Movavi Video Editor is from the moment you launch it. While its user interface has a modern design, it is clean and simple – making it easy to navigate through the menus and features that are available.

On top of that each feature and tool in Movavi Video Editor is designed so that it can be applied as intuitively as possible. For example if you want to add a video you can drag and drop the file in the ‘Timeline’, or if you want to crop it you can just resize the frame that appears to the size that you want.

For a more detailed example of how it can be used to boost the volume of a video, head over to their website.

By leveraging familiar actions like the ones highlighted above, Movavi Video Editor is able to ensure that it has practically no learning curve to speak of. In fact all it will take is a minute or two for you to try out any given feature and figure out how to apply it to your videos.

Key Features

While it may focus on being intuitive and user-friendly, it is not at the expense of the features that it provides. Within Movavi Video Editor you’ll find tools that you can use to:

  • Compile videos by cutting, combining, trimming, and arranging video segments into the right order.
  • Mix audio by adding audio tracks to your video and editing them to adjust sound levels, normalize quiet segments, remove background noise, or apply effects.
  • Record additional audio or video via external devices such as a webcam or microphone.
  • Enhance the video quality by using color correction, stabilizing shaky video segments, and fixing other issues.
  • Apply visual effects including animated transitions, filters, and unique special effects.
  • Add text elements in a variety of styles including some that are animated, and customize them to create captions, subtitles, and more.
  • Automatically compile and edit videos with the Montage Wizard.

Conclusion

In Movavi Video Editor you’ll find the means to edit your video in any way that you need to – regardless of whether it is a small alteration, or creating impressive video content. Its versatile features are more than up to any task, and more importantly you’ll find that figuring out how to apply them is completely painless.

The shortest fly from London to New York will take only two hours

Although commercial planes have shorten the time it takes to go from one place to another, there are people that are still complaining about long flight hours. Boeing could have a solution to the problem. It has introduced details of a new type of Hypersonic Airplane that will be able to cross the distance between New York to London in just 2 hours. The first ultra-fast Mach 5 flight could take place in ten years from now, 2028. The Hypersonic aircraft will be three times faster than a Concorde and will fly much higher. It is estimated that it will fly at an altitude of about 95,000 ft (29 km).

“Building the future at Boeing requires looking decades ahead at what could be possible, and innovating now to make it happen,” Boeing said.

The aircraft will be a little smaller than a Boeing 737 and will carry only 34 passengers. We can expect the prices to be accordingly. For the time being, the company has shown few designs and layouts with the new model. As a design, it seems to be a truly futuristic, a combination of a Concorde and a spacecraft.

“Boeing is building upon a foundation of six decades of work designing, developing and flying experimental hypersonic vehicles, which makes us the right company to lead the effort in bringing this technology to market in the future.”

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