Author Archives: Treszka Pálffy

How Do Magnetic Stirrers Work?

Just about any well-equipped laboratory, these days should have magnetic stirrers on hand. Magnetic stirrers are easy to use, affordable, and allow for consistent mixing and dispersion. Perhaps best of all, you can set up magnetic stirrers and ensure that substances continue to mix even as you move on to other tasks.

Show magnetic stirrers to a young child, and he or she might think it’s magic. While technology often does seem magical, magnetic stirrers aren’t particularly mystic. These stirrers use rotating magnetic fields to spin a stir bar that’s been placed in your beaker or another container. As the stir bar spins, it’ll mix up the liquids.

If you’re going to use a magnetic stirrer, you’ll typically need a power source. That may include batteries, a simple plug, or whatever else. Electric motors are normally used to rotate the magnet fields (often simply by moving the magnets) thus spinning the stir bar.

Magnetic stirrers generally work best with smaller amounts of liquid (4 liters or less). While magnetic stirrers are very effective and easy to use, there are some limitations. The center of your solution, for example, will often be very well mixed. The top and outside of your solution may not be.

Particularly thick, or viscous, materials also won’t mix well with magnetic stirring. Thin, watery substances, on the other hand, are often very easy to mix with magnetic stirrers.

In some cases, you can use different stir bars to improve mixing. One stir bar may work better with a solution than another. Fortunately, science and chemistry supply companies often sell a variety of stirrers. This way, you can select the one that works best for you.

Magnetic stirring devices often come with hotplates and other features too, making them multi-faceted tools that are useful for a range of applications.

The Structure of Inertial Navigation Systems

An Inertial Measurement Unit comprises gyroscopes, magnetometers, and accelerometers, and they measure angles in the axis to obtain a roll or pitch. In addition, the navigation sensors can integrate an internal or external receiver for navigation data and velocity. Most of the inertial measurement units are based on a technology that combines high performance and low power on a small size.

Gyroscope: Refers to a physical sensor that measures and detects the angular movement of objects relative to the inertial reference frame. It measures the motion without the help of a reference signal.

Accelerometer: It is the instrument that measures the proper acceleration related to a free fall that people and objects feel. The accelerations are measured by gravitational force and can detect temperature, velocity, altitude, position, and magnetic fields.

Magnetometer: It is a sensor used in the measurement of the direction and strength of magnetic fields. The measurements help to provide the correct bearing of the Inertial Navigation Systems.

Advantages of Inertial Navigation Systems

The systems are autonomous and do not depend on the surrounding environment and external aids. It is for this reason that they can operate underwater and in tunnels. Inertial Navigation Systems are well suited for integrated guidance, navigation, and control of the host vehicle. The system’s measurement unit can measure variables such as net acceleration to estimate the speed of a host vehicle.

The inertial system is used in surveying to collect data that is important for decision making. For example, inertial sensors can be integrated into indoor and mobile mapping surveys. It is also used for applications that need high accuracy and machine language, such as operating driverless cars.

The systems are used in the defense department for antenna pointing. They can also be used in marine applications that include hydrography and submarines. Navigation systems are, however, costly. In addition, it is expensive to acquire, operate and manage inertial navigation systems.

How To Improve Your Company Parking Area

When you own a business, providing a safe and accessible parking area is important to keep customers. If you’ve ignored your parking lot to pay more attention to your building, it’s time to get outside and make an assessment. Here are several steps you can take to improve parking amenities for your customers and employees.

Company Parking Area

Call for Professional Sweeping

A parking lot that’s filled with sand, gravel and debris is hazardous and makes your business look bad. The last thing you want is for someone to slip and fall in your lot because you didn’t take the time to have it cleared. To prevent an accident like this from happening, call for a parking lot sweeper Bellevue and get your parking area cleaned up.

Apply Pavement Sealer

You can extend your parking lot’s life by having it sealed after it’s been swept clean. Rubberized sealing improves your lot’s appearance and protects it against moisture, automobile fluids and the sun’s harmful rays. It also prevents an older lot from crumbling and keeps unsightly weeds at bay.

Repaint Accessible Parking Spots

Every state requires handicapped-accessible parking, so make sure the ones in your lot are clearly marked. These spaces should be ample for a disabled individual to maneuver freely. One way to make your handicapped spots stand out is to have your parking space stripes repainted and clearly labeled. 

Add More Lighting

You can instantly improve your parking lot’s appeal by incorporating additional lighting. People stay away from businesses that don’t have adequate light out of concern for safety. Ensuring all parking lot lamp posts work, as well as installing sidewalk and entrance lights, makes your parking area feel safer.

When you’re looking to improve your business, pay special attention to your parking lot. Having it professionally swept, sealed and clearly-marked will make it easier for people to bring you their business.

3 Aspects of Home Refurbishment

Home Refurbishment

Whether you want to sell or simply wish to revitalize your surroundings to meet your family’s needs, chances are you will look at ways to fix up your house during some point of home ownership. Some projects are large in scope, but others can be affordable for even tight budgets. Here are three aspects of home refurbishment to consider.

Electrical Safety and Convenience

Your home’s wiring is an integral part of daily life. Keeping it in top condition is not only important for convenience, but it is vital for well-being. Installing new outlets provides convenience, and updating current systems based on modern safety standards helps keep your family safe. As a responsible homeowner, include electrical service upgrades Philadelphia PA in your renovations.

Keeping Up Appearances

Beautiful surroundings help everyone relax by soothing frayed nerves and comforting tired minds. While this aspect of refurbishing may sound expensive initially, keep in mind that it can be quite affordable and even easy. Maintenance and superficial refreshment can be more time-consuming, or it can be quite simple. A few examples include:

  • Painting the exterior
  • Painting or wallpapering interior rooms and areas such as hallways and foyers
  • Adding lovely living plants such as orchids, ivy, air plants, and bloomers such as African violets and Christmas cactus
  • Adding new throw pillows, covers for current pillows, and furniture slipcovers
  • Welcome nature sounds, both real and in recorded tracks

While these changes may sound small, they can alter the feeling not only in one room but throughout the entire house.

Ongoing Maintenance

Pay attention to ongoing maintenance needs in and around your home. Keep interiors swept, mopped, and vacuumed. Outdoors, there are also plenty of tasks to give you exercise and a chance to enjoy the fresh air. They include:

  • Trimming branches
  • Removing dead plants
  • Replacing burnt-out bulbs
  • Mowing

Maintaining your home inside and out not only helps it look nice, but it also fuels feelings of pride.

Keeping your home looking great and working well makes selling it as well as living in it easier and more pleasant.

5 Things To Consider When Using Power Combiners

If you work with RF, microwave or wireless technology, you are probably familiar with both combiners and dividers. They are useful in either splitting signal or combining to amplify a signal. Combiners can link radio signals together or separate them depending on what you want to accomplish.

Power Combiners

1: Most Combiners Are Also Dividers

The first thing that you have to remember when working with high power combiners is that they are the same thing as high power dividers, reversed. A combiner becomes a divider when they are hooked when the input is used as an output. Most are universal.

2: Consider Your Bandwidth

In most cases, a narrow bandwidth does not matter. You can use combiners to increase your bandwidth if necessary, but unless it is done properly, you can cause the signal to degrade in a way that makes a wider bandwidth useless. You should note that some combiner configurations can extend bandwidth, but it may not be necessary for your application.

3: Pay Attention to Efficiency

It doesn’t do any good to combine or divide power inputs and output if you have signal or power degradation. Too many links often equal a loss of power. If you are losing too much power, your signal may not be strong enough once it reaches its destination.

4: Consider Size

It might seem obvious, but you have to consider the size of the unit you are working with. If the size does not matter, you can use a combiner with stripline instead of the much smaller radial design. 

5: Noise Isolation 

This is not the kind of noise most people worry about. Isolation is extremely important because it can also cause a signal to degrade no matter how your combine it. You do not want signal crossover from each component.

To combine or divide a signal, you have to consider each of these five things. If you don’t, you subject the system to what is at best a degraded signal and at worst complete signal loss.

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