Wolfram|Alpha defines a chemical element as any of the more than 100 known substances that cannot be separated into simpler substances and that singly or in combination constitute all matter. The periodic table and its elements can be viewed as the foundation for building your knowledge and understanding of chemistry. If you are attending the meeting, stop by the Wolfram Research booth, #2101, for a personal introduction to Wolfram|Alpha and the technology behind it. In this post, we begin to break down chemistry topics by taking a look Wolfram|Alpha’s collection of chemical element data.
#Wolframalpha chemical series
On Monday, we kicked off our series on using Wolfram|Alpha for chemistry in honor of the American Chemical Society’s Fall 2009 National Meeting & Exposition, taking place in Washington, DC, USA this week. All of this data can now be found in Wolfram|Alpha, including that visible hydrogen spectrum I was so curious about in high school: Today, the NIST database has become the most comprehensive and reliable set of data for atomic spectra and includes information about spectral lines and atomic energy levels associated with many elements and ions. Furthermore, atomic spectra are used by astronomers to classify and determine the composition of stars. Investigation of atomic spectra contributed significantly to our understanding of atomic structure and are described by the Rydberg formula. It is, therefore, with some nostalgia that I announce the addition of the National Institute of Standards and Technology’s ( NIST) atomic spectra database to Wolfram|Alpha. But I clearly remember the intense curiosity I felt about the phenomenon I was witnessing. Brooks put a prism in front of the glowing discharge tube, and several vertical lines of light appeared on the chalk board behind the prism.Īt the time, I didn’t really understand that the voltage applied across the discharge tube was exciting the electrons around the hydrogen atoms and that the lines formed as the pink light passed through the prism were characteristic wavelengths of light being emitted as the electrons around the hydrogen atoms returned to lower energy levels. He turned off the lights in the classroom and turned on a hydrogen discharge tube. We were learning about the structure of the atom, and Mr. For me, one of those moments occurred during my junior year of high school in Mr. Perhaps it is while reading a book or during a lecture given by a good teacher. When we are growing up and learning about the world, there are moments when a topic or idea really catches our attention.
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