Notneimanmarcus - Seriously Though. It Isn't.

Just something to think about:

"Look again at that dot. That’s here. That’s home. That’s us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every "superstar," every "supreme leader," every saint and sinner in the history of our species lived there-on a mote of dust suspended in a sunbeam." - Carl Sagan

On the back roads of Glacier National Park, Montana With Andrea

This Day in Aviation History

August 22nd, 1952

First flight of the Saunders-Roe Princess flying boat.

The Saunders-Roe SR.45 Princess was a British flying boat aircraft built by Saunders-Roe, based in Cowes on the Isle of Wight. The Princess was the largest all-metal flying boat ever constructed.

The project was cancelled after having produced only three examples. By the 1950s, large, commercial flying boats were being overshadowed by land-based aircraft. Factors such as runway and airport improvements added to the viability of land-based aircraft, which did not have the weight and drag of the boat hulls on seaplanes nor the issues with seawater corrosion.

The three airframes were stored against possible purchase but when an offer was made it was found that corrosion had set in; as a result they were scrapped….

Source:

Wikipedia, Saunders-Roe Princess: http://gstv.us/1MDH8iU  

YouTube, Saunders-Roe Princess Flying Boats: http://gstv.us/1MDH9U9  

If you enjoy the “This Day in Aviation History” collection, you may enjoy some of these other collections from Gazing Skyward TV: http://gstv.us/GSTVcollections  

Photo from: http://gstv.us/2b2abBr  

#avgeek #flying #boat #SaundersRoe #Princess #British #aviation #history

Pink Floyd posters

as seen here in katherines and paper towns, you are very opinionated on subdivisions. what are your feelings about them and why?

I really hated subdivisions as a teenager because to me they represented sameness and the bloated, intellectually disengaged, wretchedly average 21st century America.

I felt like all these identical houses were architectural crimes committed against the land, and like we would pay for our crimes with these stretched out, sprawling cities that human beings of the future would see as proof of the insanity that accompanied our national prosperity.

Now I live in that very suburbia. So….yeah.

Mount Shasta, California

Lagrange's theorem

Theorem: The size of a subgroup of finite group is divisible by the group’s size. That is, if H is a subgroup of G, |H| is a divisor of |G|.

Proof: Let’s start by saying we have a group G and a subgroup H.

This proof will count cosets. Specifically, I’ll use left cosets, but right cosets work the same way. Also, this proof will rely on a few properties of the integers.

I’ll prove this through lemmas, which are theorems used to prove other theorems. The distinction between a lemma and a theorem is only based on how we use them, and so historical reasons might leave some theorems as “lemmas.”

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