What is the Difference Between Green and Red Lasers?

This most obvious difference between green and red lasers is the wavelength of the beam. Green lasers have a wavelength between 560nm and 490nm with 532nm being the wavelength used for almost every laser. Some green lasers will have a wavelength of 526.5nm and green lasers can be made with other wavelengths such as 515nm, 523.5nm and 543nm. The wavelength for red lasers ranges from 700nm to 630nm with the most common wavelengths being 635nm, 655nm and 671nm.

The process used to create the laser beam in green lasers is very different from the process in red lasers. Red lasers are the simplest and the laser module (the section producing the beam) is just a diode and a lens. Green lasers on the other hand are much more complex and use a diode and a series of crystals and lens in a process called frequency doubling to produce a green beam.

In a red laser, the laser diode gives out red light. There are no commonly available diodes that give out green light so green lasers use a diode that gives out 808nm light. The 808nm is then converted to 1064nm by a crystal. The 1064nm light is then changed again, this time to 532nm.

The human eye is much more sensitive to green light than red light with estimates on sensitivity ranging from 10 times more sensitive to 50 times more sensitive. The higher sensitivity of the human eye to green means that green lasers are much brighter than red lasers and more suitable than red lasers for many applications such as pointing, alignment and astronomy. Green is normally the color of choice for general purpose lasers with red normally only used for research, laser shows and specific industrial applications.

Colored lasers, often called RGB lasers, are made using a blue laser, a red laser and a green laser. Due to the different brightness of red lasers to green lasers and even blue lasers, different ratios of power are need for red, blue and green are to produce a balanced white light. Using 635nm red light, the common power ratio for the three different colors is 3 red to 2 blue to 1 green.

Green and red laser light have different physical properties which not only effects their application, the different also effects the laser safety glasses that are worn. The laser safety glasses that protect against green laser beams are different from the laser safety glasses that protect against red laser beams. It is critical to the safety of your eyes to make sure that the laser safety glasses you wear match the color of the laser you are using.

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Frank is a laser expert from Dragonlasers - No 1 online store for green laser pointers & high power lasers

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Textbook SEO and SEO That Really Works, What's the Difference?

In this article I'll explain the very general difference between SEO that really gets visitors to your website, and text book SEO that may get a lot of visitor to your site, but not as many as you could get. Learning the skills required for SEO is pretty much like learning to drive a car, the basics are, get in car, put seat belt on, adjust the rear vision mirror, start the car, back down the driveway.

Drive around the block, drive up the drive, park, turn key off, undo seat belt, get out of car...Easy peasy...And if that was all there was involved in driving many more people would have their drivers license. Right! Oh no, you might be saying, I paid $19.95 for an SEO book, and now I can do it all...in fact I hire my skills out, and get paid to do SEO.

Do you really think that someone that knows SEO would really put all the skills needed in a book that only cost $19.95?

1. For one thing, to explain all the techniques you require would take several books,

2. What SEO works for one site, is in my vast experience not what works for another site.

3. SEO books are most often written by someone wanting to sell something else like an SEO program, so they are geared towards selling.

4. I have edited several SEO books (17), and the job description is always, cut out anything that won't work for all websites. I have cut out whole chapters, several times, studd that is good SEO practice but doesn't work on a fishing website as compared to a site about fertility.

So your $19.95 SEO book will give you some general ideas, and now don't get me wrong, those general ideas, if done correctly may increase visitors from say 100 a month to say 1500 visitors a month. From 1 sale in 3 years to 10 sales a month and you may be happy with that.

However, it is possible that your site could get say 20,000 visitors a month and 133 sales...or how about 100,000 visitors and almost 700 sales a month. You won't learn those skills from a book. You may be a person like I am that tries things out, and over the years you may get that 700 sales a month.

But to fast track getting those sales you are better to have a good SEO consultant, that will look at your site specifically, and tell you what needs doing, in order to attract more visitors. Or of course you could hire a good SEO and get them to do the work for you, but if you have done some SEO already, then you are probably the type that would like more control.

Most of what you need to know is on the internet somewhere, finding the information is a massive job, and for every good SEO article online, there's 2 more that are a waste of time even reading, so there's a lot of sifting through the hay to find the seeds. Better to pay someone that knows, to tell you what to do, so you can spend your time doing SEO rather than thinking or learning about it.

Lynny Brown an SEO living in San Diego, she has a wealth of online business experience over the past 10 years. Working from home, as an SEO Consultant to small business owners, people that own, and know how to edit their own websites. Often website owners have built their own websites, and would like to learn skills in online marketing and search engine optimization (SEO). With so much mis-information on the internet now about SEO and website marketing, learning these skills can be very time consuming. Lynny carefully studies her consultant clients websites, and gives her clients hints and tips that pertain to just to their website. These clients always have the option of not doing what I suggest, or all of what I suggest; it is their website after all. Her consultant clients have had much success, which of course reflects well on her SEO skills.

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The Difference Between SEO Writers and Content Providers

Although they may sound similar, SEO content providers and SEO writers are actually quite different in practice when it comes to search engine optimization. While it's true that they both provide valuable services to website owners or similar, there's actually one main area where the two are completely different - and it's in the name itself. Whereas SEO writers will generally write articles for a website or blog, SEO content providers will also look at the overall SEO of a website to maximize its SEO visibility.

Writing SEO

To really understand the difference, you need to know what an SEO writer is. Whether it's for their own website or blog, or creating articles for a client's website, blog or even article directory like EzineArticles.com, an SEO writer usually only writes keyword rich articles. That's not to lessen their worth - far from it, since SEO writers need to know how to distribute keywords effectively throughout their articles.

However, SEO writing is completely different from SEO content writing - after all, an article for a website or submission site can be on pretty much any topic that the writer or client wishes. It may be that the writer wishes to be known as an expert on a certain niche, so they write keyword rich articles to place on their blog or similar. Nothing wrong with this at all - but it's a far cry from being an SEO content provider.

The SEO Content Provider Difference

While a good SEO writer may make for a decent SEO content provider, a decent SEO content provider will always make for a good (if not excellent) SEO writer. This isn't said from a "mightier than thou" position either - it's simple writing economics.

This is down to the different and more expansive roles that an SEO content provider has to fill. Not only do they need to provide strong, keyword rich and SEO-friendly articles and content, they also need to:

Enhance the overall SEO of the website in question
Work in conjunction with the website's URL and meta tags for increased SEO performance
Constantly provide fresh and relevant content to maintain SEO performance and visibility
Be aware of the competition's SEO and marketing methods
Combine the SEO potential of website and complementary blog(s)

When you take into account the various roles that an SEO content provider brings to the online marketing table, you can see why there's a vast difference between top SEO writers and top SEO content providers. Agreed, they both have their places and will continue to do so. However, to truly maximize your online visibility and presence there's no competition - while an SEO writer will give you good keyword articles, for maximum results you need to look at using the services of dedicated SEO content providers and consultants.

SEO Content Providers has but one goal - to provide affordable, high quality SEO content for websites and blogs. Whether you're an individual, professional or business you can be sure that your SEO content projects are handled professionally and punctually. Choose us for your next project and see for yourself the SEO Content Providers difference.

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