Author Archives: Sung Lee

A Long-Lost NASA Spacecraft Comes Back Alive

Posted on February 21, 2018 by Sung Lee

A NASA spacecraft IMAGE (Imager for Magnetopause-to-Aurora Global Exploration) was launched in March 2000 to study Earth’s magnetosphere where charged particles from solar winds trapped by Earth’s magnetic field. In December 2005, it suddenly stopped talking and since then it … Continue reading →

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107 cancer papers retracted due to peer review fraud

Posted on April 23, 2017 by Sung Lee

There was a report at ars Technica that the journal Tumor Biology is retracting staggering 107 research papers due to fraudulent peer review process. It appears that such practice has been an on-going business. According to the report, last year … Continue reading →

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Are We Alone in the Universe After All?

Posted on February 25, 2016 by Sung Lee

In the movie Contact (which is based on the novel with the same title by Carl Sagan), Ellie Arroway (played by Jodie Foster) was speaking to a group of children: “I’ll tell you one thing about the universe, though. The … Continue reading →

Posted in Astronomy, Astrophysics, Space | Leave a comment

A Notable Quote on Richard Feynman

Posted on December 23, 2015 by Sung Lee

From Freeman Dyson, “Disturbing the Universe”, Harper & Row, New York, 1979: “Dick was also a profoundly original scientist. He refused to take anybody’s word for anything. This meant that he was forced to rediscover or reinvent for himself almost … Continue reading →

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$\sum_{n=0}^\infty e^{nix}$ is Cesàro Summable

Posted on September 29, 2015 by Sung Lee

Back when I was a Ph.D. student, a friend of mine (he was a Ph.D. student in physics studying laser optics) asked me if the series $\sum_{n=0}^\infty e^{nix}$ converges. I vaguely remember that his advisor needed to have a finite … Continue reading →

Posted in Summability Methods | 5 Comments