Originating from the Greek words anemos (wind) and metron (measure) an anemometer was originally designed to measure wind speed. Modern anemometers also provide data on the speed and velocity of gases in a contained flow such as an air duct. Broadly, an anemometer measures the wind speed and velocity for a range of industries and sciences, with many offering additional functions such as temperature and humidity.
Manual or Digital
Commonly referred to as a wind meter, the first known anemometer was invented in 1450. This design, which is still used in certain applications such as weather stations, features three or four cups set at 90 degree angles. Mathematical calculations based on the number of times the cup spins per minute provide the value of the wind speed.
With advances in microprocessors, anemometers now incorporate digital technology to provide very accurate measurements. Results are displayed on an LCD screen in the unit of choice. The top quality instruments will be accurate to around .5 meters per second.
Who Uses an Anemometer?
The construction industry requires information from an anemometer when using cranes, telehandlers or other tall structures, and freight companies consult them to ensure safe passage of planes and vessels. Outdoor events that need to erect structures will also make use of an anemometer. Meteorologists and physicists studying air patterns obtain data from high level anemometers to draw conclusions about the weather and climate and the instruments are also used for many recreational pursuits such as water sports, shooting, paragliding, flying or drone use.
HVAC and the Anemometer
A prime user of the anemometer is the HVAC (heating, ventilation and air conditioning) industry which applies the devices widely for air duct balancing. Multiple instruments record velocity readings at numerous points from the cross-section of the duct or gas pipes, allowing calculation of the mass flow rate. The most commonly used anemometer is the hot wire, which is constructed from a fine wire element with needles at its tip. This element is electrically heated and works by detecting the effect of the airflow on the needles. The small size of the element allows a rapid response.
Constant-temperature and Constant-power Anemometers
Anemometers are classified in two ways, constant-temperature or constant-power anemometers. Constant-temperature anemometers use a high frequency response and are compatible with hot film sensors. They can be applied for liquid or gas flows and emit low electronic noise. The constant-power anemometers are less popular as their zero-flow readings are not stable, the response to temperature and response is slow and temperature compensation is less reactive.
All anemometers need to be calibrated regularly to ensure accuracy, especially in industrial settings. This is important as accuracy can reduce over time and use. Calibration is conducted by companies with an accredited laboratory such as RS Components.
Manual and digital anemometers are both widely available for measuring the speed and velocity of gases in contained or uncontained flows. For measuring gas flow or liquid flow consult your anemometer specialist for the most suitable instrument to perform the job.
6 Tips to Hire a Mobile App Developer
The mobile app development industry is booming with no signs of stopping. The demand for mobile apps has been increasing rapidly, with smartphone users growing globally. Countless apps are available on the App Store and Google Play for users. Due to its popularity, it has become a lucrative business. Today, numerous companies are looking to hire mobile app developers to create unique and innovative apps for their businesses.
The popularity of mobile apps has also led to a surge in demand for mobile app developers who can create customized and innovative apps. They can take your business to the next level by helping you reach a larger audience and improve your brand visibility. In this blog post, I’ll share some tips for choosing a mobile app developer for hire. So let’s dive into it.
1. Decide on the Type of Mobile App
While searching for an Android or iOS app developer for hire, you must first decide on the type of app you want to develop. You can go for native, web, or hybrid apps. Native apps are created especially for mobile operating system. They are faster and more reliable than other types of apps. Hybrid apps are created for websites as well as mobile users. They are developed using web technologies but can be installed on devices like native apps.
2. Determine Your Budget
In the business realm, your finances matter a lot. Therefore, you must keep your budget in mind while hiring an app developer for your project. You need to know how much money you will spend on your app development project. The cost of developing an app depends on various factors, such as the features you want to include, the platform you want to build for, the app development company you choose, etc.
It would be best to research and then allocate a budget for your project. It will help you narrow your options and choose a mobile app developer that fits your budget. Moving on without analyzing your financial condition can put you in a difficult situation later.
3. Check the Developer’s Experience
After you have decided on your budget, it’s time to look for a mobile app developer that has experience in developing apps similar to the one you want. Check the app developer’s portfolio to see the type of apps they have developed and their experience level. An experienced developer can better understand your requirements and create an app that meets your expectations. They will also be able to suggest new ideas and features that can improve the quality of your app. On the other hand, a developer with no experience might not be able to provide you with the same level of service.
It would be best if you chose a developer with experience in developing apps for your industry. For example, if you want to build a health and fitness app, you should look for a developer with experience in developing such apps.
4. Look for a Developer with the Technical Skills
Next, you need to look for whether the developer has the skillset required to develop your app. Ensure the developer has the skills and knowledge necessary to develop your app.
You should also check whether the developer is up-to-date with the latest trends and technologies. The mobile app development landscape is constantly changing, and you need a developer who can keep up with the latest trends. A developer not aware of the latest trends might be unable to provide you with the best possible solution.
5. Look for Soft Skills
Apart from technical skills, you also need to look for soft skills in a developer. The developer should have strong interpersonal skills and should be able to communicate effectively. They should also be able to work in a team and collaborate with other members. Good communication skills are necessary for the success of any project.
In addition, mobile app developers should also have strong problem-solving skills. They should be able to figure out creative solutions to problems. A developer who cannot solve problems can slow down the development process and make it more difficult for you to achieve your goals.
6. Check the Developer’s Reviews and Ratings
Another thing you need to do is check the reviews and ratings of the developer. You can find these reviews on their website or third-party platforms. These reviews will give you an idea of the developer’s quality of work. You can also contact their previous clients to get feedback about their experience working with the developer.
Rating and reviews are an essential part of the selection process. However, you should not solely rely on reviews for hiring the right person. You should also take the time to meet with the developer and see if they are a good fit for your project.
Online Privacy and Why It’s Elusive
Most people worry that their private information is less safe than it once was, that the risks associated with data collection outweigh any potential benefits, and that they can never again go about their daily lives without being monitored.
Despite laws, regulations, and technological advancements meant to prevent sensitive data from falling into the wrong hands, it still happens frequently.
Online privacy remains to be elusive due to several factors, such as negligence on the part of individuals and governmental considerations, such as state security and protection of paramount national interests.
That’s when a VPN comes into the picture to help users resurrect their online privacy. These effective VPNs are designed to encrypt users’ traffic, anonymize internet connections and allow you to bypass geo-blocks.
Premium VPNs like NordVPN comes equipped with highly advanced technology that hides your virtual whereabouts by assigning you a spoofed IP address. Sounds interesting?
The next sections will discuss why online privacy is difficult to achieve and make recommendations; many tech experts in their NordVPN review have praised its Online privacy and security services.
First and foremost, online privacy is difficult to attain because of easy access to one’s IP address.
The IP address is required for Internet access because it enables the user to communicate and the various web servers. But even so, your IP address includes much personal information, such as your name, ISP, location, and more.
Websites with access to this can see your online activity, search history, and even how much time you spend on various platforms. By tracing your IP, people can also determine where you shop, dine, and sleep, among others.
The easy link to IP addresses and one’s online activities is one of the primary reasons why privacy is elusive. However, why do third parties and state authorities have to resort to data control and retention?
The following are some of the reasons why online privacy is difficult to attain, looking into the perspective of state actors and other factors:
As a prime illustration of the difficulties that can arise when balancing online privacy rights and state interests, the issue of national security is often highlighted.
While the government has been concerned with keeping the public safe, the 9/11 terrorist attacks and subsequent terror acts in Europe and Asia brought the issue to the forefront in a way it never had before.
The demands of security agencies in disclosing information in the hunt for terrorists, and the nebulous concept of privacy, including concerns about governments’ data use, can be at odds with one another.
Knowing whether a particular security issue validates the compromise of data privacy requires knowledge of a great deal of the essence of the security risk in question.
In a nutshell, online privacy remains elusive as the State continues its pursuit of keeping its people safe and secure.
Another factor for the elusiveness of online privacy is the duty of internet service providers in the combat against cyber-crimes, especially in child pornography cases.
The Protection of Children from Sexual Predators Act of 1998 imposed added duties on all US internet service providers and remote computing services to help in the fight against child victimization.
Specifically, ISPs are obligated to report any facts and circumstances to law enforcement agencies premised on a grounded belief that child pornography is being committed using its technology.
However, the law appears contradictory as Data Privacy Laws require ISPs to refrain from monitoring any user, subscriber, or customer’s communications or the content of any such person’s communications.
Data retention enables companies and even the state to obtain as much value as feasible from user data while adhering to regulation.
All parties involved in collecting, storing, and using personal information are fair game for the American public’s privacy concerns in the digital realm.
However, most people do not trust businesses to manage the personal information they collect responsibly.
People report not being very or not at all optimistic that businesses will recognize errors and take liability if they misappropriate or impair personal details and have a lack of trust that companies will only use their data to the extent necessary.
Lastly, typical everyday oversights can significantly compromise the privacy and security of your data. Numerous security analysts say negligence is the greatest threat to data privacy.
Uninformed and less careful users may use weak passwords, delete data inadvertently, fall for spammers, have access to privileged accounts, and browse websites that are not permitted.
Until and unless people become more careful in handling their data and using the internet, data privacy will remain elusive.
Regardless of these data privacy risks and data controls, you are not without recourse. The following are tools and methods designed to improve data protection.
- Multi-factor authentication. This is also referred to as two-factor authentication, a security measure that requires you to present at least two types of identification. For instance, after entering your details into a website, you may receive a text with a code that must be given to gain access.
- Notifications for data security breaches. Legislation in the United States requires companies to notify people in the event of a data breach involving personal information. You should immediately change your passwords and review your sensitive accounts if you get such an email.
- Password managers. We are all well aware of the significance of using strong passwords, but we need help remembering the numerous logins we have. Password managers make it simple to keep records of all your passwords and can also suggest secure, unique passwords for each website you visit.
- Premium VPNs. Premium virtual private networks (VPNs) are purpose-built to prevent malicious or accidental disclosure of sensitive data by end users. When you connect to a VPN, your traffic is routed through a private tunnel that is inaccessible to third parties, including your ISP, hackers, and government agencies.
Whatever we do on the periphery, we must gear more to safeguard fundamental principles like the right to privacy in the face of invasive government surveillance that isn’t accompanied by adequate checks and balances or a legitimate purpose.
The government doesn’t lack effort, that’s for sure. But as we know from the past, and as discussed, striking a balance between conflicting interests can cause data compromises.
Toward the end of online privacy, it is important to remain one step ahead and start the fight against these malicious actors by being more mindful of everyday internet use and by using a premium VPN like NordVPN to provide powerful encryption and data security. As an advocate of online freedom and data privacy, NordVPN protects you against security breaches caused by unreliable public networks, intermediary attacks, and other threats.
Bought a Used Computer? Dangers and Ways to Make It Secure
With the holiday season approaching, you might observe hot deals on several products in the market, including electronics. In addition to the brand-new launches, you also get deals on used or refurbished computers.
However, they can pose various hazards if you’re not careful. So, are you planning to, or have you already bought a used computer? Find some ideas to ensure that the computer you purchased works the best and there are no security issues.
Even for a relatively new PC, you never know how the previous owner may have been using it or what was the real reason that they wanted to sell it. A used computer may potentially include any of the following issues.
A used PC may be a den of malware or Trojan viruses, often in favor of the seller, who may have installed them in the first place. Such programs may also be hidden as protected or encrypted files, making it difficult for new users to access them conveniently. One PC infection known as MoonBounce manages to cling onto the device even if you reinstall your operating system. It remains in a device by planting itself on the motherboard’s SPI flash memory.
You can restrict specific networks on your Windows, Linux, or macOS computer for security purposes. But that same safeguard can be used to prevent the new owner from using the services they may require personally or professionally. For instance, you can receive a used laptop that blocks services like OneDrive, Steam, and Amazon as they were deemed unsafe by the previous owner.
A refurbished PC doesn’t mean it has installed all the latest updates. It may still be running an older version of the OS with several backdoors wide open. Alternatively, malicious programs could run in the background using those backdoors. There are already thousands of cases of crypto-jacking, with shady developers using registered platforms to mine cryptocurrencies from their users’ computers without permission.
Degradation of hardware is a common issue among used PCs. Unless a professional went over it during the refurbishing process, it could be hard to know whether the storage drives, RAM, processor, or any other component is on its last legs.
Most sellers might only observe the physical damage before evaluating the reasonable selling price, not realizing that graphic cards and hard drives have their respective usage limits.
If you wish to buy a refurbished laptop, it is best to check the battery status. Old laptops may develop overheating issues from prolonged use, with some even capable of catching fire. That’s why experts recommend checking the date of manufacturing the battery (which might vary from the laptop) and replacing it if required.
Now that you’re aware of the possible hazards of a used computer, you can take the necessary steps to avoid them. Some of those include the following.
Sometimes, the problem can manifest in the source itself. If you buy a used laptop from an unverified or shady website, it will most likely be infected with malware or have defective pieces. Both Amazon and Walmart share certified refurbished products. Still, it helps to examine each seller closely before deciding to buy. Look out for more frequent complaints or low ratings.
You must not trust that the performance of any PC might match its written specifications. Always bench test a new computer using System Diagnostics. It gives you an accurate report of all the internal components connected to the motherboard. If possible, try doing it before you make a purchase. It can provide you with an edge in negotiations should you find any problems.
The first thing to do after booting a used PC is to flash the BIOS of the system. Upon startup, you can do it by pressing the F2 key (depending on the manufacturer). Go to BIOS Settings and select the Flash option. It will reset the BIOS version as if the computer just came off the factory.
Once you’re confident that the BIOS is running as intended, you should format all the drives on your system or install a fresh one if you can afford it. You can do it through Disk Management or the Command Prompt in Windows. For macOS, it is located under System Utilities.
The first software you should install on a used PC should be an antivirus. You should install the premium version of a trusted source and initiate a scan of the entire computer. If no viruses are detected, leave it active to counter future cyber threats.
Updating your current OS is a great way to close off any backdoors on your device. You should do it if the computer is running an unregistered version. Sure, you must invest a bit more, but it can save you thousands of dollars in data privacy should you ignore it.
When using the internet, it is possible that you will be subjected to various types of tracking. Furthermore, your computer’s connection to the internet might not always be secure. Thus, a PC VPN can help you avoid issues with unsecured connections. It offers protection by encrypting all incoming and outgoing data. Furthermore, you can use it to change your server location to anywhere else in the world, throwing any cyber stalkers off your scent.
The prospect of owning a new PC for cheap is rather lucrative. So, have you bought a used computer? Dangers and ways to make it safe should also be on your mind. With this guide, you can ensure that no other device can turn on you ever again.
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