At first glance, the "Snowblind" Edition is a wintry white-on-white, along the lines of the Field Notes “Northerly” edition from a few years back, but take “Snowblind” out into the sunlight, and it’s a whole different story.
The covers (100# Sappi McCoy Silk cover stock) are silk-screened with two custom inks. The Field Notes logo is a pearlescent “interference” ink that glimmers and sparkles, and the rest of the book is coated in a nearly-magical “photochromic” ink that changes colour when exposed to sunlight. Indoors, they’re white, outdoors they’re blue!
INTERFERENCE ink contains a finely-ground powder of pearlescent pigments. It’s sometimes used for document security, since the effect is difficult to replicate and doesn’t appear on photocopies. The reflected colour varies depending on the light source and the viewing angle. In this case, the ink appears clear and glossy at first glance, but sparkles with metallic colours ranging from blue to gold when viewed at an angle.
PHOTOCHROMIC ink changes colour when exposed to a specific range of ultraviolet light. The ink appears colourless indoors, but changes to blue in about 15 seconds when exposed to a strong UV source like mid-day sunlight. The colour fades away in a few minutes when removed from the UV source. The change is not permanent, and can be repeated.
The body pages are 60# Finch Opaque text paper marked with a very faint grey graph, and the books are bound with glossy white staples.
Note: Long-term exposure to UV light will fade the ink and reduce the colour-changing effect, so keep the books out of direct sunlight when you’re not using them.
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