Browsing: NIST General

It seems that I have been a teacher nearly my entire life. One of my first jobs as an early teen was helping to teach gymnastics to elementary students. Before and after I earned my black belt in Tae Kwon Do, I taught a women’s and children’s classes. In the world of weights and measures and laboratory metrology (metrology is the science of measurement), about 40 percent of my time each year is spent teaching, designing new courses or webinars, updating and improving training, and training or developing new trainers. I love that moment when my students’ “light bulbs” come on and I know that they’re getting something, especially when that something is the ability to make high quality, credible…

Marie Curie is perhaps the most famous woman of 20th century science. Major motion pictures and best-selling biographies have chronicled her discovery of the radioactive elements polonium and radium, for which she shared the Nobel Prize in physics in 1903 and then received a second Nobel Prize, this time in chemistry, in 1911. Very little note, however, has been made of her leadership role in the development of radioactivity standards. In 1910, she was asked by her peers to prepare the world’s first radium standard: a glass ampoule containing 21.99 milligrams of radium chloride, whose mass and radioactivity had been carefully measured. She agreed, on the advice of Nobel laureate Ernest Rutherford, that this international standard would not be kept in…

My mom is a painter, so I grew up in a messy house full of brushes, twisted tubes of paint, pots of ink, plaster busts of various Romans, rolls of papers, and shelves of art books. I remember spending many hours poring over the glossy pages of my mom’s art books and trying to imitate the drawings I liked. I got so good at drawing the profiles of Agrippa and Venus that they became my favorite things to doodle. However, whenever someone asked me what I wanted to be when I grew up, my answers were usually a doctor, an astronaut, a scientist—never an artist. For me, art was something I enjoyed in my free time and appreciated having around…

In case you haven’t already heard, if you wanted to give your loved one that special, once-in-a-lifetime gift by naming one of the elements in row 7 of the Periodic Table after him or her, it’s too late (and probably against the rules anyway, but more on that later). With the recently announced official names for elements with atomic numbers 113 (nihonium), 115 (moscovium), 117 (tennessine) and 118 (oganesson), the all-radioactive row 7 of the Periodic Table is now complete. Included are two (thorium and uranium) found naturally, five that result from the radioactive decay of other elements—such as everyone’s favorite cinematic time machine fuel, plutonium—and 25 that can only be synthesized in the laboratory. The good news for those…

This week is the 41st anniversary of the Metric Conversion Act, which was signed on December 23, 1975, by President Gerald R. Ford. Normally, we celebrate by sharing metric education resources, but this year I want to use the occasion to dispel some common misconceptions about the U.S. relationship with the metric system. You’ve probably heard that the United States, Liberia and Burma (aka Myanmar) are the only countries that don’t use the metric system (International System of Units or SI). You may have even seen a map that has been incriminatingly illustrated to show how they are out of step with the rest of the world. It’s a compelling story and often repeated, but you might be surprised to…

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