Monthly Archives: June 2012


This is the first time I reblog a post from a fellow computational chemist and the reason why I do it is because of its beautiful simplicity and usefulness. Given the scope this blog has taken I think this post becomes most appropriate. This post will show you how to create an energy level diagram using nothing but MS Excel.
Kudos to ‘Eutactic’, from Australia, for coming up with a nice solution to this problem. Check out his blog at eutactic.wordpress.com.
Thanks for letting me repost it 🙂

eutactic

I worked out a very quick and easy way to generate level schemes in Excel, based on a query from one of the other students in the group. Normally I would resort to something like the astonishing TikZ for this sort of task, however our group is very much a Microsoft Office ‘What You See Is A Metaphor For Cosmic Horror‘ group and recommending that a colleague learns two new markup languages to produce a figure is probably not helpful in the short term. One of the issues with charting energy levels in Excel is that levels are typically represented by horizontal bars connected at their vertices with lines representing transitions. Whilst Excel does have a horizontal bar as a marker, it possesses two show-stopping limitations:

  1. It is only uniformly scalable, and can only be scaled so far – we cannot make it anywhere near wide and…

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Ray Bradbury (1920-2012) and his influence on me…


I was first introduced to Bradbury’s writing in 1989 during my first year in junior high school (here in Mexico that is the 7th grade; I was eleven years old then) by my literature teacher Ángel Molina-Aja at LOGOS School, a progressive institution in southern Mexico City; so now with the departure of the grand master of Science Fiction I can’t help but to think about Ángel and his possible motivations for making us read ‘The Martian Chronicles‘ of all possible books. It is pretty obvious now that his intention was to engage us in literature (prior to ‘Chronicles‘ we read ‘The Hobbit‘) and to make us read something that would in turn make us want to read more and so by reading we would open a world of possibilities to ourselves. His job as a literature teacher wasn’t just to make us learn about literature but to learn how to appreciate it for the values that leaves in our lives, whatever our own inclinations were. As I’ve written before, science fiction is a usual common denominator to us people working in science because we deal with imagining how to bring to life things and ideas that are currently nonexistent. Whether we create new materials with new applications or we come up with wacky mathematical theories that describe the intricacies of the universe, we all have to first set our imaginations free and believe everything is possible. In this way we are sometimes less pragmatical (albeit not necessarily more creative) than lawyers, business people and the like. Education should then be formative, not informative, in order to make an intellectually resourceful population in every area of the human and social development. Here in Mexico the average reading habit is less than 1 book a year per person! and with the upcoming presidential elections and the respective campaigns, it becomes obvious that a poorly read people is a very manipulable one. And the idea of an ignorant population kept in line by the ruling powers through alienating them from literature is the main theme of Bradbury’s other masterpiece ‘Fahrenheit 451‘, in which a fireman is a person who starts fires in order to destroy books (it is widely known by now thanks to this novel that 451 degrees Fahrenheit is the temperature at which common paper ignites itself). In ‘Fahrenheit 451‘ books are banned because they make people unhappy and unsettled by showing them a world of possibilities that they may or may not achieve, so it is safer to just satisfy people basic needs, which include 24 hours of personalized TV programming on every wall of their homes (sounds familiar?), and by doing so they wont question their leaders or their position in society. They just wont have dreams! That’s the bottom line. The many troubles of my country won’t be solved by people reading Bradbury, but if I was engaged into literature by ‘Chronicles‘, among other books from other authors, and by that engagement I was able to discover the world of science and decide I wanted to become one, then the ripple or domino effect triggered by reading, reached its goal; a goal set by my teachers, to whom I will be always most thankful. I wish I could post a picture of my old copy of ‘Chronicles‘ but I guess it’s back at my parents place all worn out. I have to remember taking a picture of it next time I visit my folks. Here is a picture of my old copy of the Spanish translation to ‘Chronicles‘ all worn out thanks to me and my sister, I guess. Thanks to my dad and his ninja-dropbox-skills for getting this picture for me!

My old copy of “Martian Chronicles” in Spanish bought in 1989. Thanks to my dad for taking this picture and using his ninja dropbox skills 🙂

Bradbury’s work and specially ‘The Martian Chronicles‘ romanticized the idea of space exploration. What a huge coincidence, in a sort of a poetic way, that his departure occurred on the same day as the transit of Venus, a phenomenon that will not occur for another 105 years. I wrote earlier on my facebook page that he did not died, that he only went back to Venus. I was close to not posting it for it might be in bad taste, but then I thought that I don’t know what happens when we die and nobody else in the world does either, so this is as valid as any other hypothesis but only more romantically so.

Rest in peace Mr. Ray Bradbury and may this be a thankful testimony for all those hours of rational entertainment and enlightenment.

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