Thursday, December 22, 2016

The Chemical History of a Candle

The "Chemical History Of A Candle" by Michael Faraday, is perhaps the most popular science book ever published. It has been published continuously since 1861. By design, the book is a series of lecture notes given by Faraday at his annual Christmas Lectures, beginning around 1849 in London. Faraday was a science celebrity in his lifetime, but much more so than those we have today because they lack such career achievements in science as his.

In this simple series of lectures, Faraday ties together much of what was know about chemistry and physics, simply by considering a burning candle. What I love about this first lecture is the way Faraday demonstrates what a perfect storage medium of energy the wax candle is. Hydrocarbons are our friends -- not something to be demonized.


Thursday, December 15, 2016

Last Letters From Stalingrad: #34

..Nobody knows what will happen to us now, but I think this is the end. Those are hard words, but you must understand them the way they are meant. Times are different now from the day when I said good-bye and became a soldier. Then we still lived in an atmosphere which was nourished by a thousand hopes and expectations of everything turning out well in the end. But even then we were hiding a paralyzed fear beneath the words of farewell which were to console us for our two months happiness as man and wife. I still remember one of your letters in which you wrote that you just wanted to bury your face in your hands in order to forget. And I told you then that all this had to be and that the nights in the East were much darker and more difficult than those at home.
The dark nights of the East have remained, and they have turned much darker than I had ever anticipated. In such nights one often listens for the deeper meaning of life. And sometimes there is an answer.  Now space and time stand between us; and I am about to step over the threshold which will separate us eternally from our own little world and lead into that greater one which is more dangerous, yes, even devastating. If I could have made it through this war safely, I would have understood for the first time what it means to be man and wife in its true and deepest sense. I also know it now--now that these last lines are going to you.
The key to understanding the series is here, and here. Each letter (39 in all) was written by a different and anonymous German soldier who knew he was going to die. I associate these letters with Christmastime for reasons explained at the links.