Blue Ice at Mackinac

Blue Ice at Mackinac

Michigan Winter, photo by Jeff Caverly

I featured this photo yesterday in Five Things you need to know about Michigan on Absolute Michigan. Check the link out for more interesting things including some new revelations about when Gov. Snyder’s senior staff raised concerns about Flint’s water (October 2014) and a look at an innovative approach to tackling urban blight. 

mLive recently reported on blue ice at the Mackinac Bridge. The other day’s post on Michigan in Pictures explained why ice is blue or green. In case you didn’t read it, here’s a bit of that:

As with water, this color is caused by the absorption of both red and yellow light (leaving light at the blue end of the visible light spectrum). The absorption spectrum of ice is similar to that of water, except that hydrogen bonding causes all peaks to shift to lower energy – making the color greener.

…In simplest of terms, think of the ice or snow layer as a filter. If it is only a centimeter thick, all the light makes it through; if it is a meter thick, mostly blue light makes it through. This is similar to the way coffee often appears light when poured, but much darker when it is in a cup.

You can view Jeff’s photo background bigilicious and see more photos of the ice at Mackinac & also Tahquamenon Falls in his slideshow.

More winter wallpaper on Michigan in Pictures.

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