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This page is a link/map to other sources of information related to color science and its application to real world industrial color control, both visual, totally instrumental (no human intervention), and combinations of both. Even if not interested in color science, one might find some entertainment through the matching practice program and some illusions. That mystical Standard Observer is explained in understandable terms describing its development and function in colorimetry. Documentation of probably the first real digital computer color match is presented. You know, the same process used by the home improvement stores to produce paints matching your samples. You'll be amazed how long ago this work was documented. Visit RPDMS.COM Color Services section.

Interested in web page design? Other links can lead to a better understanding of the ins and outs of web page design using latest XHTML and CSS techniques created to better ensure Internet viability into the future. Detailed examples can be found illustrating the benefits of human coding over that performed by WYSIWYG systems. Maybe you're looking for help with your web site or want to build one on your own. Visit RPDMS.COM "Want your own page?"

For additional information about web pages, early computer and network history, programming or just general data management. Visit RPDMS.COM Computer Services section.

Less interesting of course, but included for the completeness of this index, would be the Penrod family web site and the Corning, Ohio, High School web site with lots of midi music.

Familiar with Northwest Ohio, Sandusky and Erie Counties, or the world famous Castalia Blue Hole or Seneca Caverns? Interested in caves and their connection to various aquifers, then you'll definitely be interested in a newly published research paper, "Determining the source of the water in Crystal Rock and Brewery Caves, Northwest Margaretta Twp., Erie County, Ohio, USA". Ever heard of the Black Swamp? Fossilized remains of aquatic animals indicate it may have extended as far East as Sandusky. Find this and other related articles. Visit HOSEco.

Have you noticed that LED devices are getting more colorful by blinking colors other than regular red, green, blue and straight mixtures of the same. Humans with normal 3-cone color vision can distinguish somewhere around a million colors. Belive it or not! Visit Fading Rainbows

Are you working with addressable LED strips? Do you wonder why the PWM combinations sometimes don't seem to agree with what you see? Find out how to fade a color from off to full brightness while producing visual uniformity! At least within the resolution limitations of 8-bit color. The answers are here. Fix Your Colors

Now a few words about this page. Most certainly you have noticed the visual effect of seeing the page background image through a seemingly translucent text block. Translucency or more specifically, opacity is standardized as part of CSS3. However, browsers have not yet adopted complete support for CSS3 although Firefox and Google Chrome have implemented the opacity property. Unfortunately, Internet Explorer implemented its own "filter" property using different opacity scaling, thus the same coding will not produce similar results among the three most popular Windows browsers.

That being said, IE, Chrome, and Firefox all render this page properly by producing the same transparency illusion. My claim has always been that properly written web pages will look similar in all up-to-date browsers that strictly adhere to the latest standards, provided of course, one has followed these rules when writing the page code. That is my guiding principle and my pages consistently validate to XHTML 1.0 and CSS3 with two occasional exceptions I'm not willing to give up - embedding MIDI files and the use of marquee property, neither affecting the page appearance. Marquee is planned for CSS3 and embed is coming back in HTML5.

How is the effect seen on this page achieved if not via this opacity property? It is created using two separate images, the original page background image and a second lightened, lower contrast, faded image used as the background for the text blocks. That second image is truly the background behind this text. Both images are fixed at the same coordinates with the faded image only revealed in text boxes. Think of them as being layered one over the other creating a case of WYSINWYG, what you see is NOT what you got!

Blank lines are included after this paragraph, so scroll down to completely expose the original, unfaded background. Further scrolling to the bottom will reveal smaller versions of these two backgrounds, side by side for your perusal. If you have any questions or would like help with you own web site, feel free to contact us through the link below. However, do NOT change the subject of the message to avoid its being lost in the shuffle of daily spam.

As always, thanks for visiting my site. Please, come back soon.

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Small version of background image Small version of faded background image