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Build your own solar panel

Solar panels can save a homeowner a lot of money on their energy bill. Unfortunately, a large investment is needed to install solar panels, especially if you want to run your entire home on solar power - so one option is to build your own solar panel. Solar panels will pay for themselves over time in energy savings... and after saving enough money to cover the initial investment they will continue to provide energy for free because they do not require costly maintenance to continue working. The average life of solar panels is 20 to 30 years. On average it takes solar panels three to ten years to pay for themselves. That's at least ten years of free energy. If you have considered solar panels to create the energy you need for your home, you may have found that you could not afford the initial investment, which can be anywhere from thousands to tens of thousands of dollars depending on how large of a system you need. It is possible, however, to build your own solar panels. There are...
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Record Your Screen on Android

HIGHLIGHTS DU Recorder has all the features you need and good design Do you need to record what's happening on your phone? There could be any number of reasons for this. You might want to share video from a game you're playing, or perhaps you're keen to show off some features from a new app. Or maybe you want to make a video that your parents can follow to figure out how to fix some problems on their phones. We've already explained how you can record your iPhone screen, with a simple feature that’s built into iOS 11 . With Android it's a little more complicated than on iOS, as you'll need to run a third-party application to get the job done. We have been reading about the different options available, and trying out the ones that seemed most promising, and along the way, we've checked out a lot of different options to record screen of your Android device. These are mostly free - some are supported by ads, donations, and some have in-app purch...

Millions of Android Phones Hijacked to Mine Monero Cryptocurrency

HIGHLIGHTS Hackers have been mining Monero coins via smartphones for months Users presented with CAPTCHA to solve while browser mines Monero Android phone users should use web filters, security software Millions of Android smartphones have reportedly been hijacked in a drive-by cryptocurrency mining campaign. As per security researchers, over the past few months, hackers have secretly been mining Monero coins via smartphones. According to Malwarebytes researchers, the campaign was first observed in January though it had started around November last year. According to the report, millions of Android mobile users have been redirected to a specifically designed page "performing in-browser cryptomining." Though the method, the report says, is "automated, without user consent, and mostly silent," visitors are presented with a CAPTCHA to solve to prove that they are human and not a bot. The warning message reads as "Your device is showing susp...

Karachi Murder Raises Red Flag On China's $50 Billion Projects In Pakistan

A gunman opened fire at least nine times on the 46-year-old Chinese managing director of the local unit of Shanghai-based Cosco Shipping Lines Co., which has operated in Pakistan since 1994. Chen Zhu was hit in the head and later died in hospital  Chen Zhu finished lunch last week at Karachi's China Town restaurant before driving to buy groceries opposite Zamzama Park, an upmarket area in Pakistan's financial capital close to diplomatic consulates and a Navy-fortified housing estate. A gunman opened fire at least nine times on the 46-year-old Chinese managing director of the local unit of Shanghai-based Cosco Shipping Lines Co., which has operated in Pakistan since 1994. Chen, who was hit in the head and later died in hospital, had relinquished his usual police escort during the Feb. 5 national holiday. Without indicating the reason for the murder, police passed the case to its counter-terrorism unit. The incident -- in one of the safest districts of the port city of ...

What’s in a Heartbeat?

● Your heart is at the hub of your circulatory system and is an exceptionally hard worker. If you are an adult, your heart likely beats over 100,000 times a day. Even when you are at rest, your heart muscles work hard—twice as hard, in fact, as your leg muscles do when you sprint. And when necessary, your heart can double its pace within five seconds. In adults, cardiac output varies from 5 liters [10 pints] a minute—5 liters being the approximate amount of blood in the body—to as much as 20 liters a minute during exercise. Your heartbeat is controlled by what has rightly been called a stunningly designed nervous system. This system ensures that the heart’s upper chambers (atria) contract before its lower chambers (ventricles) by delaying the contraction of the latter by a fraction of a second. Interestingly, the lub-dup sound that doctors hear through their stethoscope emanates from closing heart valves, not from pulsating heart muscles. A Billion Beats As a general rule, an anim...

20 Ways to Create More Time

HAVING identified the activities with which you want to fill your days and hours, the challenge is to move from optimistic theory to actual practice. The following suggestions may help you to do that. 1 KEEP A DAILY TO-DO LIST. Number items according to the order in which you will handle them. Indicate items that are worth spending more time on. Check off each item when it is completed. Carry over unfinished tasks to tomorrow’s list. 2 SYNCHRONIZE YOUR CALENDARS. Don’t risk missing an appointment because it is only in your other calendar. If you have a calendar in your computer and another in a handheld device, see if you can synchronize the two. 3 WRITE AN “ACTION PLAN” consisting of all the steps involved in a project, and put these in their proper sequence. 4 GENERALLY, SCHEDULE YOUR MOST IMPORTANT TASKS FIRST. It will be easier to find time for the less important ones. 5 SET GOALS OVER WHICH YOU HAVE A LARGE DEGREE OF CONTROL. You have more control over increasing your skil...

Nature Had It First-Television

SOON after men learned to broadcast sound, inventors wondered if they could also transmit live pictures. To appreciate the challenge, consider how television works today. First, a TV camera focuses a scene onto a target device that “reads” the picture, similar to the way you read print. However, instead of scanning lines of letters on the page, it scans lines of spots (or pixels) in the picture. It converts what it sees into an electronic video signal that can be transmitted to another place. A receiver then converts the signal back into a live picture. A Scotsman named John Logie Baird has been credited with being the first to demonstrate a television. When poor health caused him to give up his job as an electrical engineer, he turned to a subject that had interested him since he was a teenager—how to build a machine that could transmit live images. Baird’s television camera used a disk (a hatbox, at first) perforated by about 30 holes arranged in a spiral. As the disk spun,...

Is Coffee Raising Your Cholesterol Level?

RESEARCHERS at the Wageningen Agricultural University, in the Netherlands, say that drinking unfiltered coffee will raise your cholesterol level. The crucial word is “unfiltered.” Why? Research Reports, a newsletter from the Netherlands Organization for Scientific Research, says that coffee beans contain a cholesterol-raising substance called cafestol. When hot water is poured directly on the ground coffee, the cafestol is extracted. The same is true when finely ground coffee is boiled in water several times, as it is in Turkish coffee, or when a metal filter is used instead of a paper filter, such as in a French press. Without a paper filter, the cafestol ends up in the brew. One unfiltered cup of coffee, which may contain up to four milligrams of cafestol, can cause the cholesterol level to rise by about 1 percent. Espresso also contains cafestol, since it is made without a paper filter. However, its cholesterol-raising effect is less if you use a demitasse. Less espresso, less c...