Wednesday, February 9, 2011

Engineering Dictionary

I'm adding new technical terms to the Engineering Dictionary all the time. I try to keep the pages a certain length, so from time to time I divide them up to keep the page lengths about the same.
One new page starts with the Pull-Down Resistor Definition, which was divided off from the page starting with the Definition of PRBS. It doesn't matter which page a technical definition is on, except for page length, because at the top of each page is a directory for that particular letter. So a visitor can quickly move to the correct page with out having to scroll through a number of engineering definitions they may not be interested in.
 A second update was made to the page starting with the PCB Term Via, as in a plated hole in a printed wiring board. The new follow on page starts with the Definition of Volt.

I don't divide the pages up that often because there are a number of issues with making a new page from an existing page, plus the pages grow in size slowly. Of course it takes a few weeks for the new page to be found by the search engines. With Google that also means that it will be at least 3 months for the new listing to receive a page rank. Following that lack of page rank also implies that terms that were search-able may no longer be found in a search, until they get a little page rank.

Another problem with this type of new page is that the page that was just generated appears to have duplicate content to the page it was derived from. Remember the existing page was already in a search engine cache, so when the new page shows up it looks just like the 'older' page. So it takes some time before both pages are spidered [by the search engines] and appear to be different. The bottom line is that any definitions residing on the new page are unreachable by the search engines for some months, new page or not.

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