Sunday, June 24, 2012

Lise Meitner - Denied the Nobel Prize

In December of 1938, Lise Meitner received a letter from colleagues in Germany explaining their latest experimental results and questioning what these results could mean. For almost 30 years Lise had worked with Otto Hahn, and later Fritz Strassman, performing experiments related to radioactivity. Although she had begun as Hahn’s assistant without pay, their relationship had evolved to the point where she was the recognized expert in matters related to physics; Hahn was a chemist.

Lise’s nephew Otto Frisch was visiting for the holidays and together they discussed the letter she received. Researchers working on radioactivity had known for some time that one element could change into another, such as radium to polonium in Marie Curie’s experiments. But recently several researchers, when bombarding uranium with neutrons, had been finding elements with smaller atomic weights, almost half the atomic weight of uranium. At the time no one believed that the nucleus of an atom could be split. Hahn and Strassman’s research repeated this result. Meitner realized that this was exactly what was happening and that the power that would result from a chain reaction would be immense. Together she and Frisch worked out the mathematics and she conveyed the information to Neils Bohr who was on his way to the United States for a conference. And the rest as they say is history.

I knew this basic scenario when I began to read about Lise Meitner, but as usual there is more to the story. Continue reading

Friday, June 22, 2012

Americans and Evolution

Rejecting evolution expresses more than an inability to think critically; it relies on a fundamentally paranoid worldview. 

This is the subtitle of an article I read on Alternet, although it was first published on The Nation. The article,  What Is Wrong With Our Education System? Almost Half the Population Doesn't Accept Evolution by Katha Pollitt, has some disturbing statistics.

  • 46 percent of Americans with sixteen long years of education under their belt believe the story of Adam and Eve is literally true. 
  • 25 percent of Americans with graduate degrees believe dinosaurs and humans romped together before Noah’s flood. (emphasis mine)

I once had a Facebook friend tell me that climate change was just a political conspiracy to bring down American business. I responded that if it was just something being discussed or promoted by Americans, I might consider the possibility, but it was REALLY hard to buy a worldwide conspiracy. The same thing applies to evolution.
  
"Almost every scientist on earth would have to be engaged in a fraud so complex and extensive it involved every field from archaeology, paleontology, geology and genetics to biology, chemistry and physics. And yet this massive concatenation of lies and delusion is so full of obvious holes that a pastor with a Bible-college degree or a homeschooling parent with no degree at all can see right through it."


Even though we may win battles in court, that doesn't necessarily change what happens on a local level. As she points out in the article, some teachers still skirt the issue of evolution (60 percent) at best while others may teach Creationism out right (13 percent.) Parents who are aware of this and complain face a hard fight often being vilified in the process. What happened in the Dover, PA community in 2004 is good evidence of this.


It's nice to think that as a country we will consistently make progress over time, but the last 30 years or so since I left school sure seem to be taking us backward. The old aphorism "two steps forward, one step back" sure seems to be turning into one step forward, followed by many steps back.


Check out the article, it's worth the read although disturbing.

Wednesday, June 20, 2012

Emmy Noether - Original in More Ways Than One


“Fraulein Noether was the most significant creative mathematical genius thus far produced since the higher education of women began.”  ~ Albert Einstein

If you ask anyone to name a famous woman mathematician, the names that come to mind will usually be Hypatia, Ada Lovelace, Emilie du Chatelet, or Maria Agnesi, if they can name any at all. I must admit that these women were the ones who attracted my attention as well when I started reading the history of mathematics. Each of these has something that attracts us apart from mathematics: Hypatia’s brutal death, Ada’s famous father, Emilie’s famous lover, or Maria’s piety. Yet with each of these women there are debates about how much original work they actually did and how much was primarily building on the work of others. There is no doubt that they were all brilliant and deserve to be remembered, but there is one who undoubtedly did work that was so original that it changed the way we do mathematics and is virtually unknown outside of specialist circles: Emmy Noether.

Emmy Noether made groundbreaking contributions to theoretical physics and abstract algebra. She developed several formulations to support Einstein’s General Theory of Relativity, in fact he wrote to David Hilbert, “You know that Frl. Noether is continually advising me in my projects and that it is really through her that I have become competent in the subject.” The principle behind Noether’s Theorem is foundational to quantum physics proving that the laws of physics are independent of time and space. And yes you can even blame her for “New Math,” her approach, just very, very, watered down. In spite of all of this, she worked almost her entire life without pay because she was a woman.
Continue Reading.