Alternatives to Liebenzeller Gold I Rosin

Liebenzeller rosin has been around a long time. In fact, I still have a cake of it from the 1980s. This brand took rosin “upscale,” by adding trace amounts of gold, copper, silver, and other metals (along with lots of dollars) to the price of rosin. After all these years, Liebenzeller has finally been discontinued.…

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Common Mode Currents Vs Differential-Mode

In all circuits both common-mode (CM) and differential-mode (DM) currents are present. Both types of current determine the amount of RF energy propagated between circuits or radiated into free space. There is a significant difference between the two. Given a pair of transmission lines and a return path, one or the other mode will exist,…

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Instructions Of Interior Painting

Interior painting requires as careful preparation of surfaces as does exterior painting. The advent of odorless paints now makes it possible to paint any time of the year. Formerly, most interior painting in the home was done in the fall or spring, when it was possible to leave the windows open to ventilate the room.…

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Top Ten Bar Movies

Considering that a lot of us spend a large amount of time in bars, it is amazing how few movies feature bars as a central element of the story. There are classic bar scenes (Star Wars Cantina for example or the saloon in High Noon) but few movies feature a bar as a character unto…

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Burettes, Laboratory Glassware

Definition: A burette is a uniform-bore glass tube with fine graduations and a stopcock at the bottom. It is used in volumetric analysis to measure the volume of a liquid, especially of one of the reagents in a titration. Burettes are used when it is necessary to dispense a small measured volume of a liquid,…

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