What is the importance of the Modulation Transfer Function?

Dec 7, 2016 by

As an optical designer, you must’ve heard about the modulation transfer function a couple of times. It is the scientific method that is widely used to describe the performance of the lens. If you are planning to use it, you must ensure that you know how to hire the right MTF testing service here at http://www.image-science.com and of course, you must understand the importance of the modulation transfer function so that you can utilize it properly and wisely.

The name says it all—the modulation transfer function is the measurement of the transfer of the modulation that is extracted from the object onto the image. To put it simply, the modulation transfer function is a tool use for measuring on how the lens’ ability in reproducing the object into the image.

When you are talking about the modulation transfer function of the lens, make sure that you can identify the type of test pattern that you are going to use because there are different types of test patterns out there. One of the most preferred pattern in modulation transfer function is the sine wave pattern in which the density of the optics will vary from white and black in a very smooth manner and of course, the line profile imitates the sine wave perfectly. But, these patterns are quite hard to generate and regarding the image that is produced by this certain type of pattern is hard to measure just by the use of the naked eyes. That is why, as you can notice, in modulation transfer function most of them are using the bar-type pattern. This is because the bar-type patterns can have a higher measurement of the modulation transfer function compared to the sine wave patterns but honestly, the difference is rather small.

You should not only consider the type of the test pattern that you are going to use, but the light that you are going to provide in illuminating as well as the type of detector that you are going to use when it comes to the recording can influence the modulation transfer function a lot. It is because the modulation transfer function will all depend on the wavelengths that are also based on the lights that you are using. For instance, if you opt to use a blue light then you will most likely have a higher modulation transfer function compared to when you use a red light. In most cases, white light is often used, but the results will all depend on the color temperature. On the other hand, tungsten light will have a stronger and longer wavelength component if you will compare it to the daylight so basically, the modulation transfer function that you are measuring using the tungsten light will most likely be lower if you’d compared it to the modulation transfer function that you are going to measure on the daylight. Regarding detector, if the sensor is a bit sensitive to the blue light then you can conclude that the results will have a higher MTF.

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Will Digital Business Cards Replace Paper Business Cards?

Nov 25, 2016 by

With all the changes in traditional ways these days turning digital, many are thinking that what used to be normal will be replaced with something more convenient. There are so many examples about this, like a painting. Painting the traditional way still exist these days. Some artists have even developed techniques that are quite different in the past centuries. But in the digital world, you can create a digital painting with the use of a digital art editor. With business cards, there are those so-called digital business cards, too. Go to http://www.mbizcard.meto see what these digital business cards are like.

Will it replace the old business cards?

A lot of people are speculating that the usual business cards will be replaced with digital business cards in the long run. Here is one proof that traditional business cards will still be around.

Visual presentation. One thing that digital business card doesn’t have that paper business cards do is the visual presentation. It has a life to say about its owner to the recipient. The more unique the paper business cards are made, the more it gives an impact to the one who receives it. Have you realized how there is something different abouteverything you’ve touched, even if there are digital counterparts for it? That is how the classics will always remain. It’s true that digital business cards do have that visual presentation, but it can never topple what traditional paper business cards can offer. There are even businessmen and businesswomen that spend the extra cash just to make their business cards sizzle. They know the value of business cards since it is where first impressions make a lasting impact on the receiver.

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Convenient on Conferences. If you are a businessman or a businesswoman, you know very well how conferences, events and the like are very important to you. All the more you need to carry around business cards. It is the time where you get to expand your network by exchanging contact information with various other individuals on those conferences or events. With those business cards, they can use it to contact you and even remind them on how you met for the first time.

While they may not be replaced in the distant future, it is advisable that every individual that carries a business card must also prepare their digital business card. It is safe to assume that most individuals prefer the old traditional way, but you will meet people that will simply ask about your digital business card instead. This is because it is more convenient for them, not to mention it doesn’t leave too much clutter on their end. Because of such situations, you need to have your digital business cards ready at all times. You can find a lot of apps that are designed to make such things.

With both digital business cards and paper business cards with you all the time, you are ready to meet new individuals that will one day help your business grow.

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How Wood Moisture Meter Works

Nov 7, 2016 by

Think of a wood moisture meter as a very good investment to make because just for a very affordable price, you will no longer have to worry if your wood is too wet or too dry to use. Knowing the moisture level and content of the pieces of wood that you are going to use will help you determine the right time to use the pieces of wood. With the use of the moisture meter, you will no longer have to worry about estimating and just purely observing the moisture content of a wood material.

Wood moisture content are very easy to use, and this device needs no professional training or practice for a user to use it. You just have to follow the manual’s guide and instructions and then you are already good to go.

Pin and Pinless Moisture Meters

There are certainly two kinds of wood moisture meter, the moisture meter with a pin or without the pin. However, both types can still measure the moisture level or content of material, but both have different ways of measuring the moisture content of the material. The moisture meter with a pin measures the moisture level through the electric current while the moisture meter without the pin measure the moisture level of the wood through sensing the electromagnetic field of the material or object.

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Advantages of Using the Moisture Meter Without the Pin

One of the advantages and benefits of using the moisture meter without the pin is that it can quickly scan and determine the moisture level of the entire material or wood even without putting holes on the wood. You can even take the moisture meter without pin with you when you are going to buy for pieces of wood or lumber. Unlike the wood moisture meter with a pin, it must be in good contact with the object or material to be measured before it can read and determine the moisture level of the object. This kind of moisture meter can detect and read the moisture level of the wood no matter what shape or kind of wood that has to be measured.

Advantages of Using the Moisture Meter With Pin

However, using the moisture meter without the pin has also its advantages and benefits. One of the major advantages when using the moisture meter without the pin is that it can detect and measure the moisture on the edge of the board stacked for drying purposes which means that you do not have to take away all the pieces of wood for you to do the measurement.

Moisture meters with a pin or without measure the moisture levels differently. Whichever you choose to buy and use, make sure to consider the pros and cons of each of the products before actually buying it. Also, make sure that you are going to buy the moisture meter at legit stores like http://www.kilnservices.co.uk/moisture-meters.htm because there are some online stores which claim to be selling legit and original moisture meters. Be sure to get the original wood moisture meter.

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Five Best Types Of Wood

Oct 31, 2016 by

Wood has many types but there are just certain types that can be used for woodwork. There are hardwoods and softwoods.  Evergreen trees produce softwood while angiosperm trees produce hardwood. Hardwood is usually chosen over softwood when making sturdy wood projects. You can check the five best types of wood below.

Oak

You can buy white oak or red oak for your woodworking projects. They are heavy woods that would be great to make home furniture like beds and heavy duty closets. The wood grain would look lovely with wood stain and is not necessary. Just keeping its natural color on your woodwork can make it stand out. The wavy grain is a favorite in making wood crafts out of oak.

Maple

A much lighter colored wood used because of its durability. It can be dried with kilns on http://www.kilnservices.co.uk.  Furniture is made with it. It is a good substitute for a more expensive wood for its affordability. Woodworkers prefer to use it to make dressers and bowling alleys. It has a great similarity with cherry when it is stained. This similarity is usually used to make a better looking piece of woodwork.

Cherry

Antique furniture is usually made of cherry. It becomes more beautiful in color as it is aged. Its natural color changes from light to darker tone of color. Getting it from a kiln from http://www.kilnservices.co.uk/log-drying.htm will prepare it for use. It can be easily carved but makes strong and long lasting furniture. It is not surprising to see beautifully carved antique furniture made of cherry. The pieces are highly priced but it is worth it for the woodworks you will create with it.

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Mahogany

Another expensive type of wood is mahogany. It has a distinctive brown to red-brown color. Since it is a hardwood, it is popular. You can use it on the traditional type of wood projects. Its natural color helps to make it a wood sought out for its beauty and durability. You can make furniture that can also last for years with mahogany. It has fine grains that would look great upon finishing. Carving it is also not a problem since it is a good carving wood.

Pine

Softwood light in color is a common description of pine wood. A good feature is it  is lightweight. It might not be as durable as hardwood but its other characteristics make up for it. The grains are great for staining when you are looking into what finishing touches are good for it. It can be prone to denting and scratches but careful handling will easily prevent this. Paint also works great with it, making it a good wood for kid’s toys.

The best types of wood are chosen by woodworkers to create magnificent pieces. Using wood from mahogany can be expensive but the cost is nothing once you see the outcome of your woodwork. The cherry wood becomes more beautiful over time. Oak and maple are hardwoods that stay strong over time. Pinewood is a softwood but it is lightweight and affordable.

 

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CCTV: Is It Worth It?

Oct 6, 2016 by

CCTV: Is It Worth It?

CCTV has been a common fixture in shops, pubs, car parks and other public places for years. Now, thanks to easier installation and falling prices, it’s becoming an increasingly popular choice for security-conscious homeowners. It’s not for everyone though as although cameras can be bought on their own, they can be pricey!

Cameras can also be bought as part of a whole security package. Costs can range from low to high for a vandal proof camera with a great night vision range. You of course also have to purchase equipment to accompany the camera, depending on which type you choose, such as connectors and a digital video recorder to store and view the footage. You can also buy dummy cameras quite cheaply as deterrents. CCTV is just one line of defence against crime and works best when combined with other measures, such as a burglar alarm, door and window locks, gravel around the property and security lights. Bear in mind that the measure you take have to be legal: there’s no requirement for Home Alone style prank set ups!

Wired home CCTV systems are the most common and cheapest type of camera, where a wire plugs directly from the camera to the monitor. The downside is that the wires which includes the extension cables and connectors, can be difficult to install. With wireless systems, images can be transmitted using analogue or digital technology to your computer, tablet or mobile smartphone. Many smart security cameras link to an app that you can use to monitor your home while you’re out and about. Digital cameras are generally higher quality but more expensive. Wireless systems can suffer a bit of interference from devices such as routers, cordless phones and microwaves and can be blocked by heavy masonry or metal objects. Your filming may also be interrupted if you lose your internet connection.

Companies such as http://www.afass.co.uk can advise on the right systems you should use for your home and if you are choosing to use CCTV cameras outside the home, make sure they are weatherproof – an international protection (IP) rating of six is recommended here. Wireless cameras are available but you’ll still have to run a cable to a power source. Position cameras where they cannot be tampered with, but can be accessed for maintenance and cleaning. You can buy vandal-proof cameras but these tend to cost more.

Indoor CCTV cameras come in three types: wired, wireless and powerline networked and these plug into your electrical sockets and transmit images to a storage device. Wireless cameras are not recommended inside the home unless the signal can be encrypted as anyone within range and using a suitable receiver would be able to view the images. CCTV image quality is linked to the size of the chip is uses and cameras with tiny chips also tend to be able to pick up less light, and therefore produce lower quality image so make sure you choose a camera with bigger chips for better image quality.

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Are Branded Earphones Better?

Oct 3, 2016 by

Are Branded Earphones Better?

This is a difficult question to answer. If you say yes, then consumer groups will accuse you of being biased and favoring a certain brand. If you say no, then manufacturers will accuse you of undermining their product as well. So, are branded earphones better than generic earphones? It all depends on a host of factors that affect the product. At http://www.pocketrocketuk.com a marketing decision is already made to carry only branded earphone. There are valid reasons for this decision. When you market a product, you either choose to be a generalist or a specialist.

It depends on Technology Used

Cheap technology produces cheap products. Expensive technology and research produce superior products. This is the formula when it comes to technology. But there is a precaution here. Technology can be easily stolen through the use of reverse technology method. While this can happen there will still be areas of the technology that can never be taken. This is the advantage of branded products. Quality cannot be stolen. Yes, certain portions of the technology can be stolen but not everything. There will still be areas where the branded earphone will have a distinct advantage.

pj0ilvs7qlIt depends on Materials Used

This is an area of concern. Some materials may look the same, but they are not. A case in point is plastic. While plastic may look the same, it is not true. Some are made of high-quality materials that can resist heat, wear, and tear. Others look the same, but they decay in such a short time. Branded earphones use the best materials available. Some materials are so exclusive that you cannot purchase them elsewhere but only in specific suppliers. This is one reason why branded earphones always have the advantage of quality over generic brands. Generic brands can only duplicate the looks, and that is all there is to it.

yodpj7kvc9It depends on Assembly Method

Assembly method or the manufacturing process is always the technological edge of branded earphones. The process is a trade secret because it is where the edge comes in. Another issue is that of product quality control. Generic products may not have the same strict product quality controls. There is no name to protect, and this can affect quality. In branded products, there is a reputable to protect and so stringent quality control measures are always in place. Replacement of defective products is also not available in generic products. Only branded earphones are capable of accepting defects and replacing defective products.

In summary, branded earphone are better. It is better in quality, better in sound reproduction and better in its warranty. If you want your music listening pleasure to be trouble free, it is advisable to invest in a good quality branded earphone. This will give you hours of trouble free listening pleasure. While generic phones may be cheaper and may sound the same, this is only a perception. When measured with a device, the music reproduction does not come at par with branded earphones.

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Getting Your Story Out In Five Ways

Sep 6, 2016 by

A story needs to be heard but few people take notice. A person trying to tell a story to someone won’t create a big impact. If you long for your story be heard, work hard for it. Organize your thoughts to tell your story in an interesting manner. You can get your story out in five ways.

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Post your videos

Your story can get through many people through videos. People prefer to watch videos online than go to inspirational talks or events. You can create wonderful videos through http://www.cmavideo.co.uk. Upload your videos on public websites like YouTube.  You can gain more audience when people watch your videos. Add your contact details on the video if you wish to be contacted by your audience.

Get in touch with media

Stirring the media’s attention can get your story out faster. The media can help you share your story on TV if you have a great story that can help many people. Contacting your local TV network is the first step. Almost every home has a television. Just imagine how many people watch TV every day. It is a big step in sending your story to many people. National TV networks always jump on the bandwagon once they sense a good scoop.

Create a social media site

Another way to reach more people is through social media sites. You can create your Facebook and Twitter account. Making a dedicated social media site to send out your story will let people follow your topic. They can get in touch with you through social media. Your videos can be posted on your social media sites to cover more audience. Going online will attract more followers. A good social media site can get you a million followers.

Talk to influential people

People like Oprah can help you get your story out to more people. It could be difficult to get the attention of influential people. Influential people can invite you for a talk if you have a good story worth telling. Your story can spread widely through influential people. Big audiences already follow influential people. Once influential people tell your story, it means a lot of people will listen to it. It could just spread like fire, and the limit of people who can tell your story is limitless.

Write a book

Write a book to be able to reach more people not just the current generation. You can talk to future generations if you write a book today. Many people’s great stories are heard through their books. The book you will write today can be read by the younger generation. Your story can reach many people through your book. Your story can continue to live forever.

A story can live forever once a book is written about it. Post your videos for your story to reach more people through a social media site. Get in touch with media to help you. Talking to influential people can inspire them, and they can tell your story to more people.

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