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B10 - Indigo Mystery Cache

This cache has been archived.

Skookum Bear: As the cache owner has not indicated that they have visited the cache location to replace it if it was missing, perform needed maintenance, or verify that it is still there within a reasonable amount of time, I am regretfully archiving the cache to clear it from the active cache database and open the area to new caching opportunities. If the cache owner would like to replace a cache at this location, please submit a new geocache listing and it will be reviewed under the current Geocaching guidelines.

Please do not respond to this note by sending an email reply - your response will go to an unmonitored location and disappear into the ether instead of being sent to me. If you need to contact me regarding this cache, please do so using the link on my Profile Page

Thank you for your contribution to geocaching.


Skookum Bear
Community Volunteer Reviewer

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Hidden : 1/23/2010
Difficulty:
4 out of 5
Terrain:
1.5 out of 5

Size: Size:   not chosen (not chosen)

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Geocache Description:

Welcome to Indigo


The "Curnew's Color Caches!" is a series that has taken us a LONG time to finish as it seems like we have been working on it forever. We're happy that it's FINALLY finished and ready for everyone to enjoy!
Indigo is the color on the electromagnetic spectrum between about 420 and 450 nm in wavelength, placing it between blue and violet. Although traditionally considered one of seven divisions of the optical spectrum, modern color scientists do not usually recognize indigo as a separate division and generally classify wavelengths shorter than about 450 nm as violet.

Like violet, whether indigo is considered a shade of purple depends on context. Common English usage defines a purple color as any color between red and blue whereas in color theory, a purple color is defined as any non-spectral color between violet and red (not including violet or red since they are spectral colors). Thus indigo and violet fit the common but not the color theory definition of purple.

One can see spectral indigo by looking at the reflection of a fluorescent tube on the underside of a non-recorded compact disc. This occurs because the CD functions as a diffraction grating, and a fluorescent lamp generally has a peak at 435.833 nm (from mercury), as is visible on the fluorescent lamp spectrum.

The first recorded use of indigo as a color name in English was in 1289.

Please feel free to visit the other caches in this series:
B10 - Alizarin
B10 - Gamboge
B10 - Periwinkle
B10 - Liver
B10 - Rufous
B10 - Indigo
B10 - Yellow

FV

Additional Hints (No hints available.)