What the flux does, when you heat a workpiece, is it reacts with these metal oxides that are forming with the temperature and exposure to the air, that tend to interfere with the metal-forming process of soldering.
What the Olympic medals mean... it was the best of times, it was the worst of times. It was the best of times, it was the worst of times definition. The opening sentence of A Tale of Two Cities, by Charles Dickens, referring to the time of the French Revolution. Discover our greatest slideshows.
I might disagree with many of such choices by historians, but I don't disagree that Obama and Bush aren't the worst. Naturally, people -- especially in America -- live in the moment and, given the crisis orientation of cable news, think that this is the worst period the country has ever gone through. Not really. In U.S. history, there have been much greater economic calamities and grander needless wars -- and thus worse presidents. In Recarving Rushmore, the four worst presidents -- falling below both Obama and George W. Bush -- were in rank order: James Polk, William McKinley, Harry Truman, and Woodrow Wilson.