The Many Real Advantages of Magazine Subscriptions

April 17th, 2010 by Administrator

The large majority of people will have at one period in their lives subscribed to a particular publication that they really enjoy. The best advantage of digest subscriptions is that these magazines offer up substantially lower prices per copy than the standard supermarket prices. The other advantage is that these subscriptions guarantee that one should continually receive the consecutive magazine. With printed magazines commonly sold on newsstands, this can often be a hit or miss, depending upon the availability of the title. Starting a subscription is very basic nearly all periodicals provide a subscription leaflet in each issue. Just complete the form and post it to the production house. Publications can likewise be subscribed to on the internet via going to the publisher’s official website. Many readers subscribe to a magazine as a method of certifying that they get their titles at regular intervals.

Magazines engender partiality among people who normally favour the similar sort of periodical genres. Regardless of whether the periodical subscription genre is photography, cooking, home decorating and motor mechanics or is specially targeted at craft lovers and arts collectors there’s fantastic amusement to be had from this compact type of reading material. Digests specialising in restaurants or the contemporary arts like theatre and dance, museum exhibitions as well as urban and rural interests all form a portion of the enormous selection of Publications at one’s disposal.

It is inconceivable that traditional magazines will ever shrink from public affection given the simple access to magazine stores that sell them and to subscriptions which preserve a general flowing of magazines to houses and companies. If the magazine subscriber transfers from one area to some other the subscription only involves a simple amendment of name and address preceding the relocation to continue receiving fresh issues. E-zines are certainly amazing for typical computer users but unless one has easy accessibility to the world wide web E-zines are not as easily available as printed magazines which can simply be put into a rucksack or backpack. Traditionally printed periodicals are constantly ready and easy reading material, especially for frequent travellers.

The convention of subscribing to journals is one that many folks would scarcely cease. Most of the most beneficial magazine subscriptions are the ones for the style of magazine which increases in economic value over a span of time. Television programming titles, national, historical and international affairs magazines commonly increase in value as a direct result of particular events that have taken place.

Posted in School of Webbing | Comments Off

How to Set up Your Web Site

November 16th, 2009 by Administrator

The initial project when planning a Web site and a robust online presence is picking out a suitable domain and employing the best suited registration for your particular niche. Mind you, this is not ordinarily an easy decision. Let’s face it: the very best way to guarantee that your requirements are fulfilled is to carry out some pain-staking research of domain hosting companies by taking a look at reviews.

Reviews of domain hosting are helpful but how to establish what it is you are actually looking for? Just like all informed business decisions, you should discover which features are significant for your market. One option is to employ the same company to host your Web site and register your domain. Support is something which could affect your business long after registration.

Any review published on that hosting provider’s Web site won’t be sufficient to go on. It is important to look at an objective opinion before you make a choice. Make time to research into various domain hosting review sites taking into account what all the customers have to say. Do you read any issues over and again? Are the company’s strong points from the article? Is the feedback broadly speaking positive or negative?

Assume you will see positive and negative feedback for each provider. Stay objective and read any info you can. Without a doubt, cost is an important consideration, but ensure you have any extras you might require in your targeted deal. Below are a few questions to address when selecting the best hosting for your needs.

During what times of day does the company you are reading about provide technical support? Is there a free phone number, and can you deduce from the feedback whether or not they have an acceptable response time? What kind of network uptime will they guarantee? Are there any limitations on bandwidth? Some companies extend limitless domain hosting and bandwidth as part of a package, and on occasion you could be in line for other benefits like software packages and even vouchers for pay-per-click marketing accounts.

What payment plans are available? Could payments be put in place automatically, and are rebates extended for payment in full? What happens if the server fails?

Only you are able to choose the most suitable hosting for your unique needs, but before you make that decision, do the most sensible thing, take a bit of time to read those reviews. Let’s not forget that studying proper domain hosting reviews gives you the chance of saving time and money later.

Posted in Misc Infos, School of Webbing, Web Of Technology | Comments Off

How to Make the Best out of Domain Hosting Reviews and Service Ratings

October 25th, 2009 by Administrator

The very first task when setting up a Web site and solid net presence is deciding on a relevant domain and choosing the best web registration for your unique niche. Mind you, this isn’t a simple process. At the end of the day, the easiest method of making sure that your requirements are fulfilled is to carry out some painstaking preliminary research. Reviews of domain hosting are useful, but how to find out what precisely it is you are really looking for? Don’t make any decisions until you have decided the features that are crucial to your market. Choosing the same company for Web site hosting and registration of your domain is a popular choice. Be aware, however, that even after your Web site has been set up, issues like client service are likely to become more important than ever.

Any customer feedback found on a hosting provider’s Web site won’t be wise sensible to go on. In order to define the best suited web registration for you, you must get an unprejudiced assessment. Make time to research into various domain hosting review sites and give some thought to the customers’ comments. What seem to be the most prevalent problems? What reviews highlight the strengths demonstrated by the company? Is the feedback in general good or bad?

As with any business, you’ll discover good and bad feedback. Be objective and study any info you can. Of course, cost is an essential consideration, but ensure you have all you could need in your agreement. We have provided some questions to follow up on when researching which provider to go for.

During which hours do the company provide client support? Do they offer a toll-free number, and can you deduce from the feedback whether or not they have got an acceptable response time? What system uptime are they guaranteeing? How much bandwidth and domain hosting does the company provide? Some businesses extend unlimited domain hosting and bandwidth as standard, and now and again you may be entitled to other benefits like computer software and even coupons for Google Adwords. Do they offer a convenient way to make payments? Could payments be set up automatically, and are rebates made available for paying in full? What will they do when the server goes down? The replies to these questions could well be critical for your business.

In the end, only you can decide what is the right hosting for your Web site, but before you make that decision, be sure you have a full grasp of all available options. Perusing proper reviews gives you the chance to save time and money at some later point.

Posted in Misc Infos, School of Webbing | Comments Off

Three Click Image Resize

March 11th, 2009 by Administrator

I searched for a tool to resize images online. My mother is 72 years old and has no clue of computing devices. For her software is too complicated.On the internet you can find quite some different services for that, but there only was one great find.At ResizeImagesOnline.com you can resize images , rotate them and save them on your computer or send them via email.Wherether you need to, you can use the service. E.g. in the park, at home or even laboring. All you need is you photo camera and internet acces.

A) Pick Out image.

B) Select new size :

Longest Side:

Extremely small ( 80 Pixel )

Little ( 200 Pixel )

Moderate ( 400 Pixel )

Huge ( 600 Pixel )

Longest Side:

The maximum of pixels of the longest side is chosen

Free Scale:

Height and width are picked out freely.

The photo / image can possibly get an aspect ratio which is distorted horizontally or vertically.

C) Optional : Rotate.

D) Select “Resize!”. The picture is uploaded and resized.

Electronic Mail can be used to send the image to your pals.You have to input a valid electronic mail address.

The image resize is performed applying a new resampling technique.So you can get a superior quality compared to industry strength programmes like photoshop.but the output is limited to 5000×5000 (Pixel).The formats JPEG, PNG and GIF can be resized.

Posted in School of Webbing, University of Networking | Comments Off

Understanding DSL Internet Service

July 6th, 2008 by Administrator

DSL or Digital Subscriber Line is a type of broadband Internet connection. This type of broadband Internet requires you to have a phone line. Unlike dial up, you can actually use the phone while you are connected to the internet.

What are the benefits of a DSL Internet connection?
DSL allows you to have faster internet connection than a dial up. It can offer faster access to information, faster downloads and much more.

Here are some of the benefits you can get from a broadband DSL Internet service.

Unlike dial ups, DSL allows a subscriber to make and receive phone calls while having an active internet connection. Dial up internet does not allow this, if someone calls you, your phone line will be busy. A DSL line also keeps your computer online as long as your computer is turned on.

With DSL you can talk to your friends, family or business associates with a web cam in real time. You can easily connect a microphone, web cam on your computer, and start using these accessories right away. This may be possible in some dial up, but since it has low speed, the data sent and received will usually be delayed or choppy.

Since you can actually use your voice in the internet in real time, you no longer need to call families and friends using expensive long distance calls from your traditional phone.

DSL also enables you to use VoIP technology. This technology virtually replaces your traditional phone with the internet. VoIP has free features your traditional phone company consider as additional features and chargeable.

Video Conferencing
Caller ID
Call Forwarding
Call Transfer
Call Waiting
Ringtones
Voice Mails
Free Long Distance Calls

These are just examples that VoIP offers and a lot more features are available.

Since you can conduct video conferencing, you no longer have to travel to meet with your business associates, therefore, saving you from travel expenses.

Another benefit from DSL internet is that you can play audio and video streams in the internet smoothly and without interruptions. You can now play your favorite internet radio stations while you surf the web or play your favorite music videos in the internet.

Playing online games that requires high-speed internet is now possible with the DSL internet. You can use your own PC or gaming consoles such as the PS2 or Xbox to play with other people from around the world and create an online community with adventure games.

Students can also improve their studies by using the DSL connection. Since DSL provides high-speed internet connection, students can now research more webpage that are required for their studies.

In dial ups, low speed internet connection restricts a student’s research to just a few webpage. This is because in dial up, loading webpage is too slow that a student will just stick to one or two websites to save time and money to do their research.

Online businesses can update their websites much faster in DSL than in dial up. Updating website for online businesses is crucial to inform their customers about the products they are selling.

Today, there are many DSL service providers in the market; choosing one is up to you. Research about the companies that provides this service before you buy their service and you can be sure about the quality of the DSL connection.

Ask your friends and family first who have this technology in their homes or businesses can also help you choose which DSL provider you want to work with.

Bob Hett has extensively covered the Internet Service Provider industry as an analyst and has researched the various companies for factors based on price, reliability, support and overall quality. Learn more at DSL Internet Service

Posted in School of Webbing | Comments Off

Windows Hosting versus Linux Hosting

June 8th, 2008 by Administrator

If you have a more complex website, or an ecommerce website that has database functions and serves up dynamic pages, then the server type will depend on what technologies your website will be using, such as ASP, .NET, PHP, Perl, and what type of database it will use.

Differences between Linux and Windows hosting.

Price
Linux holds an edge due to the fact that most of the software we use is open source and that it’s less cost to maintain Linux servers than Windows servers for the same level of service.

Your computer
One of the biggest misconceptions is that you have to run Linux on your local computer in order for you to host your website on a Linux platform. Which operating system you run on your computer is irrelevant to what you need for your website. This means, if you are running Windows 98, Windows XP, Windows® 2000 or using an Apple Macintosh, you can still choose Linux or Windows as your hosting platform.

Security
Many people argue that Linux servers has less vulnerabilities than Windows servers. But the reality is, out of the box, neither Linux or Windows is very secure for Internet use. HostW3 makes numerous modifications, removes unnecessary components and updates software to ensure that both platforms are secure. We also continue to maintain our servers with the latest security and performance patches.

The Bottom Line
The differences between the operating systems is much less than you might think. We would recommend choosing the plan that has the options you want, rather than worrying about what operating system they are running on.

www.hostw3.com

John Clark is a webmaster for http://www.hostcube.co.uk (Cheap Web Hosting - Hosting Reviews) and for http://www.media-press-release.com (Submit Press Release)

Posted in School of Webbing | Comments Off

Websites for Writers - Why You Need One and How to Get Started Today

May 17th, 2008 by Administrator

It may seem like the publishing industry’s equivalent of Beanie Baby madness- everyone is talking about writer’s websites. Freelancers and authors everywhere are jumping on the bandwagon, publishing sites to promote themselves and their work. This craze leaves many writers wondering if it’s just a fad or if it’s really worth the expense and effort. While it may seem like an overwhelming or frivolous endeavor, there are some solid business reasons why you should consider setting up your own website.

Editors Like Writer’s Websites. When querying an editor for the first time, you can add credibility to your writing resume by referencing your website. Instead of attaching clips, you can provide a link to clips on your site. This minimizes paperwork and lets you avoid sending email attachments that can get scrubbed or cause your email to be routed straight to the trash bin. It also makes the editor’s job easier- which could cause them to reward you with a new assignment.

Your Site Can Save You Time. When you put your clips online, you avoid having to copy them over and over again and instead just upload them once to your website. Your clips file can be as current and as varied as you want it to be. This can streamline your query process and ultimately make you more productive.

Writers with Websites Get More Work. Writers with websites will tell you that they get more assignments as a result. When you start listing your site in writer’s databases, job boards, on your resume and in directories across the internet, you inevitably catch the attention of people who do the hiring.

Your Site Can Promote Your Work. Whether you are writing freelance articles, books, eBooks, copy for corporations or offering editing services, you can use your site to promote your offerings. Corporate clients will be impressed by a thoughtful website with samples and testimonials. Your site becomes a reflection of you and your work and can impress editors, agents and publishers. The more you work to advertise and market your site, the more attention you can expect to receive.

Setting Up Your Website

It’s relatively inexpensive to start a website and often the biggest investment will be in your time. You can hire someone to help you get your site up and running, or you can take this on yourself.

If you want to have the flexibility to manage your site and change the contents frequently, it would be worth it to learn how to do it yourself. Microsoft Frontpage and Dreamweaver are two of the most popular software programs for website design. If you don’t want to design it from the ground up, many companies offer templates that you can purchase for as little as $15. You can then customize the template to meet your needs.

If you decide to hire a website designer, there are many to choose from. The best way to find one near you is to ask writer friends or business owners in your community for a referral. You can also ask someone whose site you admire to share their designer with you.

Website Hosting

You can opt to use a free website hosting service like the one offered by Geocities, but keep in mind that you won’t have your own domain name. Instead, your URL would look something like: www.geocities.com/mywebsite.html.

For a truly professional site, you can register your own domain name and have your site hosted for as little as $12 per month through providers like Yahoo. Yahoo also offers free tools for website design, so if you want to create a simple site with just a few static pages, their tools may be enough to get you up and running.

Though I use FrontPage for designing my business website, I found Yahoo’s Site Builder tool easy to use and was able to design my writer’s website in just a few hours. Check out the result at www.StephanieChandler.com.

Getting Your Clips Online

If you don’t already own Adobe Acrobat PDF Creator software, you should give it some serious consideration. You can use the program to easily convert scanned files and Word documents to PDF format, making it easy for readers (editors) to view your published clips from your website.

The software also makes it easy to publish your own eBooks and other files that can be used for all kinds of business needs. Adobe allows you to create you first three PDF documents for free. You can also sign up for a subscription based service or bite the bullet and purchase the full software package.

Merchant Card Services

If you want to accept credit card payments online, you can attempt to get a merchant services account. Unfortunately, these are difficult for new businesses to obtain from the big banks due to the amount of fraud in the small business arena. There are many merchant brokers that provide credit card services, but keep in mind that you will have to pay a monthly fee in addition to the percentage per transaction. Luckily, PayPal has come to the rescue and now offers credit card payment services that are surprisingly easy to implement and do not involve a monthly fee.

Marketing

Once your site is live, you need to let people know you’re there. There are endless opportunities for marketing your site on the internet. Here are some possibilities:

• List your website with all associations where you are a member.
• Trade links with other websites.
• Write articles for publications that reference your site in your bio.
• Write a blog and reference your site with each entry.

Website listings with the major search engines are calculated based on a number of factors. One way to improve your rankings with the search engines is to make sure you link is listed on as many other websites as possible. In addition to the marketing ideas above, make sure to submit your site manually to all the major search engines. You can access a free list of sources at www.BusinessInfoGuide.com/submitsite.htm

Don’t Put Off Until Tomorrow…

If you’re still not convinced that you need your own website, join some online discussions and talk with your writer friends. I have yet to meet a writer with a website who didn’t agree it is a valuable tool.

EzineArticles Expert Author Stephanie Chandler

Stephanie Chandler is the author of “The Business Startup Checklist and Planning Guide: Seize Your Entrepreneurial Dreams!” and the founder of http://www.BusinessInfoGuide.com, a directory of free resources for entrepreneurs. Sign up for the BusinessInfoGuide newsletter to receive hot resources and tips every month.

Posted in School of Webbing | Comments Off

Hiring Professionals: 5 Things to Look For

May 15th, 2008 by Administrator

So you’ve decided that it might be best to leave web design to
the professionals, have you? Well, the unfortunate thing about
web design professionals is that not all of them are exactly
professional. Some of them are working from wildly out of date
knowledge, and, well, some of them are working from their
parents’ basement.

How can you protect yourself when you decide to hire a
professional? Well, here are some guidelines.

Qualifications are Meaningless

Web design is a new enough industry that what qualifications
there are have ended up being largely stupid and meaningless.
I’ve never met a good designer who has a qualification in web
design - a qualification in proper graphical design is, of
course, something else entirely. You can guarantee that most
people with web design qualifications did them at a community
college to try and get rich during the dot-com boom. These
people know nothing about web design.

What you should pay attention to when you’re looking at web
designers is which of their skills they think are important. If
they’re marketing their Flash expertise to you, you probably
don’t want to hire them. If they can competently explain what
XHTML and CSS are and why they’re good for your website, then
they’re a better candidate.

The Portfolio

The easiest way to tell whether the designer you’re considering
is any good or not is to take a look at their portfolio. Good
designers will have a diverse portfolio, with plenty of
attractive sites that they’ve built for all sorts of customers,
and they’ll be able to explain to you why they built each site
the way they did.

If the designer doesn’t have a substantial portfolio yet, you
shouldn’t write them off there and then - but do say that you’re
going to need to see something before you commit yourself. A
good designer will happily do a first-draft design for one of
your pages just to show themselves off. If you’re happy with
what they’ve done, then the chances are that they’ve got the
rest of the design in their head, ready to code up and send to
you.

Usability is Vital

You should make sure that the designer you’re talking to
realises that they’re building your website for users - all
users, no matter how they want to use it or which web browser
they have. Amateur web designers have a tendency to come up with
things that they think are impressive-looking, either visually
or technically, while ignoring who the website is actually for -
your visitors.

Some questions to ask the designer include: Which browsers are
you going to test with? (They should reply with ‘as many as
possible’). What is the purpose of my website? (They should be
able to explain the point of the site simply).

Setting a Price

Many web designers simply have no idea what kind of price to
charge for their services. If you post a project to a freelance
site where designers can bid on it, you’ll get bids ranging from
$50 to $5,000. Both ends are pretty obviously ridiculous. At one
end, you’ve got kids with no experience and Indians who don’t
speak English; at the other, you’re paying pointless committees
to have meetings for a week.

Your best bet is to find someone professional but independent,
experienced but not corporate, and with a price that reflects
the quality of their portfolio. As with all things in life,
though, don’t be afraid to negotiate - and never agree to let
them do however much work it takes and pay by the hour.

Hosting Offers

Finally, beware of web designers who are trying to sell you a
whole package, together with a domain name, web hosting, and the
rest. Operations like this are almost always flawed in one area
or the other, since designers aren’t really very technical
people on the whole. They’ll either be web hosting specialists
who think design is so easy anyone can do it, or they’ll be
designers who are reselling some cheap hosting package for a
premium. On the web, it’s better to buy hosting yourself.

Posted in School of Webbing | Comments Off

Becoming a Successful Internet Marketer

April 6th, 2008 by Administrator

I AM SO EXCITED TO SHARE WITH YOU JUST ONE OF THE MANY
TECHNIQUES I AM LEARNING ABOUT ON HOW TO BECOME A PHENOMENALLY
SUCCESSFUL INTERNET MARKETER….

Dear Friend:

I recently stumbled across an incredible educational resource
which totally demystifies internet marketing, allowing virtually
anyone to understand the ABCs of how to make money online. Aside
from teaching the many technical aspects of how to set up an
online business, I am discovering many other golden nuggets -
unique tips and techniques I have never seen compiled together
anywhere else.

For example, I have just been reading about a fascinating
Japanese philosophy called “Kaizen”. Translated from Japanese,
this word means ‘to continually improve’. This concept was a
driving force behind Japan’s explosive growth in the global
automotive and electronics industries, enabling them to capture
the lion’s share of these two markets starting in the late 80’s.

Taking this concept and applying it to an online business is a
surefire way to catapult your business into the big leagues.
After initially setting up a website for any business venture,
all one needs to do is commit to making small, incremental
improvements and over time, the end product will become so much
more efficient and effective than its original version, success
will be assured. This applies to not only the actual design and
running of the website (if that is what you are improving) or it
could be that you are improving the actual product or service
you are selling. Regardless, striving to continually improve and
grow the business, bit by bit, is by far the best way to stay
leaps and bounds ahead of your competitors.

If you are anything like me, the whole process of setting up a
website and conducting business online can appear daunting.
Although it can seem overwhelming when learning something new,
using the principle of ‘Kaizen’ can make this process as
painless as possible. You don’t have to accomplish it all
overnight! Slow and steady wins the race - not fast and furious.
You can start off small and gradually grow your business by
learning new tricks to implement as often as is feasible for
you. If you learned something new every week, or month, which
would improve your sales by just 5%, and you applied that
knowledge to your business, imagine how much more profit you
would be generating after only a year? The implications of this
are staggering!!

I hope this principle of ‘continual improvement’ has been as
helpful and insightful for you as it has been for me. May
everyone reading this be blessed with ever-increasing success in
their Internet Marketing business.

Onward and Upward, Cherylin Gilad

For a veritable cornucopia of neat tips, tricks and techniques
to take you to the next level in your Internet Marketing
business, or help you establish a profitable one from scratch,
check out the free course at http://www.InternetProfitMentor.com

Posted in School of Webbing | Comments Off

Mind Machine Interfacing

April 2nd, 2008 by Administrator

SQUID:

In 1984 I was partnered with a Cable TV engineer and founding father by the name of Ray Osborne. He was working with people developing oscillating noise loop broadband technologies. These technologies were eventually bought by the Pentagon to use in untappable secure message or information transmissions. I imagine this technology now uses the Quantum teleporting and faster than light methods put out for contract in late 2001 by Mr. Everett of the Durham Army Depot. Ray had earlier worked with the Canadian Department of Communications on a brainwave enhancing device similar to a helmet and things I had read about that the Russians believed would someday allow the mind to move mountains (even literally) according to Psychic Discoveries Behind the Iron Curtain.

Ray told me about an experiment they did with him and another person wearing a helmet with energy inputs and electrodes attached to this helmet he wore. As the experiment was about to start, Ray had a need to have a cigarette and as he reached to get one and light it up, the thought energy directed ESP (or brainwavelength ability) was sent to the person across the courtyard who was sitting in the window so they could see each other. That person was sent into a coma and his hair turned white - thus ended the experiment on that day. Ray was not part of continued experiments and I suppose they considered stopping it for a while but I cannot believe they did not continue these researches. The military loves to have these things and they would rationalize that they must have the ability to counter any enemy who might have them too.

The Russians were the ones who tabled the removal of non-lethal weapons from the research of all signators to SALT. The Americans recently removed themselves from SALT on a uni-lateral basis. I believe SDI and HAARP are connected to these things and I fear other mind-control machines such as Dr. Persinger of Laurentian University is working on with the Earth Energy Grid will be involved. This will happen whether he and his boss Jack Verona of the Defense Intelligence Agency in the US know it or not. Los Alamos is working on a further refinement of superconductive helmetry and brain enhancements under the acronym SQUID as we see in this posting from my neuroscience forum. I do not have the original source of the posting but will follow it with another posting linkage to the University of Toronto research and related matters.

“Magnetic measurements of brain activity could be free from noise in the future thanks to a new helmet-like device developed by medical physicists at the Los Alamos National Laboratory in the US. Magnetoencephalography (MEG) is the only technique that can directly measure neuronal activity in the brain, but it is plagued by background noise that interferes with signals from the brain itself. The new helmet could provide much more accurate information on brain function (P Volegov et al. 2004 Phys. Med. Biol. 49 2117).

MEG is a non-invasive technique that provides detailed information on the brain in almost real time by using superconducting quantum interference device (SQUID) sensors to measure the magnetic fields generated by currents flowing in and around neurons. However, these magnetic field signals are extremely weak — typically between about 10-14 and 10-13 Tesla — and are therefore easily overwhelmed by background magnetic noise. Although various techniques exist to reduce this noise, none are entirely satisfactory because they can also reduce the size of the signals produced by the brain itself.

The helmet designed by the Los Alamos team is made from a layer of superconducting lead and is placed around the SQUID sensors (see figure). The helmet needs to kept at temperatures below 8 kelvin — in a liquid helium cryostat — for the lead to be superconducting. The device works on the principle that Meissner currents flow on the surface of the superconductors in the helmet. These currents expel magnetic flux, therefore preventing any external magnetic fields from penetrating the helmet. Moreover, unlike previous methods, the helmet can be placed close to the head without affecting signals produced by the brain.

The scientists have already tested their helmet on real patients and say that background noise signals can be reduced by more than six orders of magnitude, making it the most effective system to date. However, the device still needs to be improved because noise levels are still relatively high around the brim.”
“Vortex dynamics in superconducting systems imaged by Scanning SQUID Microscopy
Abstract

Using a Scanning SQUID Microscope (SSM), we have studied vortex distributions in various superconducting systems. The excellent flux sensitivity of the SSM allows us to resolve individual vortices for low flux density. Field cooling produces quenched vortex patterns which can be disordered in strong-pinning Nb films or well ordered into a lattice in a-MoGe films with weak pinning. Surface steps alter the field-cooled patterns, with vortices formed in dense rows along the low side of steps with few vortices near the high side. We observe an asymmetry in the dynamics of vortices around the surface steps under the application of a driving force. The vortex line tension impedes vortex motion from thin parts of the superconductor to thick regions, while not affecting the opposite motion down the steps. We have also investigated the behavior of vortices in thin superconducting strips in a perpendicular magnetic field, a complex problem due to the large demagnetizing effects. These geometrical barriers are frequently encountered in transport measurements on high-Tc superconductors. Strips with transverse surface steps as well as strips with a uniform cross section have been imaged. We are attempting to correlate the observed vortex distributions with transport measurements of the vortex dynamics in the strips.”

Author of Diverse Druids

Columnist for The ES Press Magazine

Guest ‘expert’ at World-Mysteries.com

Posted in School of Webbing | Comments Off