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@minogully@mstdn.ca They might have some specific definition of "constant" in mind, or some specific situation or usage.

Just for example, in a polynomial expression we often write it with constants denoted like a, b, c and the variable is x. So ax^2 + bx + c.

That type of constant is a different thing than pi, even though we typically use the same word to describe them. Like if you wrote ax^2 + bx + pi, that mean something different than ax^2 + bx + c.

But still, that is sort of a strange thing to just blurt out randomly without taking the time to give a full explanation. Just for example, pi is one of the first specific examples given in the Wikipedia article on mathematical constants: en.m.wikipedia.org/wiki/Consta

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Green River, Utah

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Biked to Dover Station. This is one of roughly 1000 *amazing* places along the Missouri River that you can visit on MoBikeFed's Lewis and Clark Missouri River Adventure Bicycle Route: ridewithgps.com/events/105329

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Sunset at the Great Salt Lake.

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More from our visit to Crouse Canyon in the eastern of . FYI the red sandstone formation you see throughout is the Uinta Mountain Formation, which has been called "the sandstone that fooled the great geologists".

Powell, Hayden, Emmons, and King all thought the rock was mid-Paleozoic but in fact it is *Pre-Cambrian*.

TLDR: They thought it was about 400 million years old but in fact it is 650 million - 2.5 billion years old. So they were off by a bit.

The Crouse Canyon formation here is about 800 million years old.

What is unusual for rock this old is that is it is mainly plain old sedimentary sandstone. Strange for rock buried 15-20,000 feet deep for several hundred million years. Some deeper/old layers are partially or completely metamorphosed, but these upper layers are not.

plantsandrocks.blogspot.com/20

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Touring Crouse Canyon in the eastern in

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Moonset

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Blue River in

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following the east through the .

First post of the - reposted to add series tag and number: 1/23

FYI all photos were taken with a Moto G Stylus (2022), most using (specifically Google Camera LMC 8.4) in HDR+ Enhanced mode. A few were taken with the native Moto Camera app. Usually I process them a bit in Google Photos to de-tilt as needed and correct the colors.

For extra atmosphere, most all were taken through the (very) dirty windows of the California Zephyr, which are thick, green, covered in water spots, and quite reflective, especially when the photo is taken at any angle at all.

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Final taken on my trip in November- arriving at my CZ destination of .

From here I'll transfer to the for Kansas City. It's just a short layover - and they even managed to transfer all my luggage over correctly. A California Zephyr miracle!

​ 23/23

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Yet more taken from the - now crossing the Mississippi River.

The Mississippi does not disappoint at all - it is B-I-G.

​ 22/?

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More taken from the - the Missouri River bottoms near .

The station is .

​ 21/?

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More taken from the - the Missouri River bottoms near .

​ 20/?

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More taken from the - the Missouri River bottoms near .

​ 19/?

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More taken from the - the Missouri River bottoms near .

​ 18/?

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More taken from the - the Missouri River bottoms near .

After all the lead-up, the Missouri River was surprising brief and anti-climactic. A lot of the surrounding lakes and sloughs look just like it - not surprising since the are all located in old river beds.

​ 17/?

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More taken from the - the Missouri River bottoms near .

Finally getting close to the river. We went south along the river bottoms for what seemed like an eternity before finally turning east and crossing the river.

​ 16/?

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More taken from the - the Missouri River bottoms near .

​ 15/?

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Further taken from the - the Missouri River bottoms near .

It was a frozen day - more cold and ice have than in the Rockies. The Missouri River was steaming like the devil.

​ 14/?

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@rvaughnmd The coldest I've ever been is a few hours cycling in rain, just above freezing temperature.

Wait, no - the coldest I've EVER been is a two-hour ride in a jetboat, constant 30 mph, no shelter, driving rain and sleet. That was with literally seven layers on, too - including a waterproof rain jacket AND a parka. AND winter mittens supposedly good to -20F, etc. AND it was only in the 40s (F), not even the 30s. Still haven't warmed up from that one yet, and it's been a month now.

The VIEW, though . . .

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