25 posts on data. All posts · RSS feed
More than 3000 nuclides (atomic species characterised by the number of neutrons and protons in their nuclei) are known, most of them radioactive with a half-life of less than an hour. About 250 or so of them are stable (not observed to decay using presently-available …
Following on from this previous post, here is a short tutorial on creating this and similar charts using pandas by automatically downloading data from Johns Hopkins University's CSSE GitHub repository (the "JHU/CSSE dataset"). The code described here is available on my GitHub repository First, we'll …
The Centre for Systems Science and Engineering (CSSE) at Johns Hopkins University publishes daily statistics of the number of confirmed cases of COVID-19 by country on its GitHub page. The short script below pulls data from this page to plot a bar chart of cases …
The equation for the temperature-dependence of the diffusion of hydrogen in tungsten may be written in Arrhenius form: where the temperature, , and activation energy, , are expressed in eV and the pre-exponential Arrhenius parameter, , and rate constant, , take units of . From …
The Earth Impact Database is a collection of images, publications and abstracts that provides information about confirmed impact structures for the scientific community. It is hosted at the Planetary and Space Science Centre (PASSC) of the University of New Brunswick. The code is also presented …
The Python program given below generates this stacked area plot of the number of nuclear reactors in different countries over the last six decades or so. It requires the Pandas library and the data file reactors.csv.
In my previous post I gave a short script for scraping a particular Wikipedia page for some string-based data in one table. Then the internet had some advice for me. Use pandas.read_html they said. It will be easy, they said; everything will be handled for …
The Beautiful Soup Python library is an excellent way to scrape web pages for their content. I recently wanted a reasonably accurate list of official (ISO 3166-1) two-letter codes for countries, but didn't want to pay CHF 38 for the official ISO document. The ISO …
Most of the world's currently-operational nuclear reactors were built in the 1970s and 80s and with an expected lifespan of 30–40 years are coming to the end of their predicted lifetime. Many will need to be decommissioned in the not-too-distant future. Using freely-available data from …
In astronomy, a fireball is a meteor bright enough to be seen over a wide area (either apparent magnitude greater than -4 or greater than -3 at zenith, depending on the definition used). The terms bolide and, for exceptionally bright meteors, superbolide are also used. …
