Search Results for: label/USNO Master Clock

  • A peek inside the US Naval Observatory – keepers of time and celestial motion

    …one of products, or helping to get that upgrade ready by testing it. Q. The USNO in Washington, DC has telescopes. What kind of telescopes do you have and what are they used for? A. The biggest telescope we have in DC is the 26-inch refractor. It is the telescope that Asaph Hall used in 1877 at our old Foggy Bottom location to discover the moons of Mars. It is still used today (despite DC’s light pollution!) to study double stars and the…

    Authored by on February 9, 2012

  • Biology Explainer: The big 4 building blocks of life–carbohydrates, fats, proteins, and nucleic acids

    …ll selection of different materials: bricks, mortar, iron, glass, and wood. Arranged in different ways, these few materials can yield a huge variety of structures. We encountered functional groups and the SPHONC in Chapter 3. These components form the four categories of molecules of life. These Big Four biological molecules are carbohydrates, lipids, proteins, and nucleic acids. They can have many roles, from giving an organism structure to be…

    Authored by on June 8, 2012

  • After Newtown missteps, journalists get guidelines

    …almost twice as likely to say that they don’t want to live or work near a person with mental illness if they read an article about a person with mental illness involved in a mass shooting, according to a study published March 20 in the American Journal of Psychiatry. Interestingly, this tendency is the same even if the article avoids any mention of mental illness. This may be because this link between violence and mental illness is deeply engrain…

    Authored by on March 27, 2013

  • My bipolar life

    …a weekend on watches, cars, furniture, whatever I wanted. I would buy a new Porsche one weekend, be bored with it in a month, and trade it in for a new one. I bought 25 cars from one dealership in California over a period of 3 years. Twenty-five cars. Who needs 25 cars? OK, I didn’t have them all at once, but I believe I once had 6-8 at one time. I bought them with cash, lease, credit, whatever. One weekend, I went to an open house, and bo…

    Authored by on February 8, 2013

  • What’s on your wishlist?

    …board for that iPad or iPhone? Look no further than the Cube Laser Digital Keyboard ($180) . What about other great gadgets? The DOTKLOK (from $150) is an open-source and hackable digital clock. It also consumes 2W for power! Runners and cyclists who love their gadgets may like the Garmin Forerunner 610 GPS watch ($320). Track your workouts, train like a pro, and analyze all the data this watch feeds to you for the height of fitnes…

    Authored by on November 23, 2012

  • Historical Physicists

    Featured today are 10 more women who broke boundaries by their presence in physics. They lived from 1711 to 2000. While I again limited information to one paragraph, I tried to highlight how they got their start, what universities, family members, and scientists were supportive of them. For these women, without the support of fathers, mothers, husbands, and mentors (all male with one exception) their life in science would not have happened. Whil…

    Authored by on February 21, 2012

  • Double Xpression: Debbie Berebichez, PhD Physicist

    …m.  My femininity allows me to be a voice in a field that has tended to isolate themselves from the public, which is bad. Some of my colleagues have become a little snobbish.  The fact that I have serious credentials (PhD and 2 postdocs) shows that I had to work like crazy – looks and personality can only go so far.  It s hard work that gets you there! Serious science communication has a lot of math and problem solving in order to explain things…

    Authored by on June 2, 2012

  • Historical Chemists Part II

    fter a short duration as an instructor at Mt. Holyoke, Dr. Carr returned to the University of Chicago to receive her PhD in 1910. She returned to Mt. Holyoke to become a full professor and head of the department by the age of 33, a post she held for 33 years. Dr. Carr was also a devoted aunt,a fashionable dresser, and a talented storyteller. She had a relationship with Mary Sherrill, another professor at Mt. Holyoke, whom she shared a residence w…

    Authored by on September 7, 2012

  • Of Mint, Mollusks, and Mojitos

    I finished assembling the requested cheddar cheese and cracker sandwiches and made sure to follow the precise directions for filling the sippy cups: half apple juice, half water, one ice cube, and a slice of lemon (don’t ask, my kids are high maintenance).  Saturday afternoon was upon us and it was clear that we all needed a little downtime.  So I set the girls up for a picnic on the family room floor, engaged Netflix, and laid out their snack. …

    Authored by on June 25, 2012

  • No gene is an island: What do scientists mean when they talk about environment and genes?

    Nope. This island does not represent your genes. (Source) When you read news stories about what affects a developing human in the womb or how cancer or obesity arises, you probably also see references to genes and environment. Some articles may focus on genes versus environment, or mention that something is “mostly” genetic or that the “environment” contributes to a disorder or trait in some way. What some people…

    Authored by on May 7, 2012

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