The Grand Canyon - Good Physics
“What’s the first color you think of when you think of the Grand Canyon?”
I bet most people would answer, “Red” given the geology of the region. That’s a good answer. And you are probably right.
When I arrived two days ago, I was struck by how blue the landscape is.
It comes down to the physics of distance: The further things are away from you, the more atmosphere you are looking through. The more atmosphere you look through, the more light gets distorted by atmospheric molecules, especially short wavelength colors like blue. This distortion causes those distant objects to take on the blue hue.
Look up: “Rayleigh Scattering” for the complete explanation of why this is.
And given the distance you can see from the south rim. It makes sense why I was seeing blue. This canyon can hold a lot of atmosphere.
Artists have been using this effect for years to make more realistic paintings and drawings.
Take a deeper look next time you are wandering through your local art museum and run across some landscape paintings.
The artists who understand light and physics will often offer you a more believable picture.
The Power of Wool Socks
The south rim of the grand canyon is about 7000 ft above sea level. It snows here frequently, though this year has been mild. The top of the trails near the rim tend to ice up from foot traffic and the contrast in temperatures between day and night. They are really slick.
Given that one slip at the wrong spot could send you skidding over a cliff, this is not something one should take lightly.
A long time ago, I learned that putting wool socks over your shoes will give you traction on ice. I put that in the memory bank, and forgot about it until this morning, while I was packing my kit for the hike.
I put in two pair of wool socks and a pair of scissors, thinking, “Hell, why not? We might need them.” And away we went.
Sure enough, The trail was a mix of compacted snow, ice, and hardened mud. We tried with just our boots (morons!) as we eased our way thirty feet into the slide before we hit our first bare earth patch. We were in it whether we wanted to be or not.
I called a halt, and said, “Let’s try the socks.”
We pulled them over our boots and I snipped off the excess with my sissors. I took a few baby steps in them on pure ice, and THEY WORKED!
I had traction. I had grip. I could dance like a billy goat if I wanted. Behold the power of wool socks! I felt like a super genius for once in my life.
We smugly sauntered down the slide for another quarter mile, passing other tourists clinging to the rock as they picked their way down.
Once passed the ice section, we stripped them off, and I put them in the side pocket for the return journey.
We got to talking with other folks taking off their ice spikes. One couple mentioned, that they “just spent 200 dollars on crampons just to do this hike.”
And there we were with old wool socks that probably cost less than 20 dollars for the pair.
Scenes from the Canyon
Rim Ravens
The ravens of the canyon country live wonderful lives. There is ample food and water to be found in the campground, which gives them so much time to soar with the wind and thermals of the canyon.
They look like they play all day long, soaring effortlessly wherever they want. They are often in chattery groups, cawing, clucking, grunting and cooing.
They really are living it up.
I like to think that people who suffered through crippling mobility issues in their lives come back as rim ravens. What a gift: to move with speed, grace, and playfullness over this magnificent landscape that is the Grand Canyon.