This article originally appeared in the March 2007 issue of Astronomy. Only one star, the Sun, lies close enough to resolve through amateur telescopes. Observing the Sun provides a superb daytime ...
The Austrian company Maschinen- und Anlagenbau Schulz (MAS) has introduced a continuous melt filter that has been designed to eliminate a range of contaminants typically found in processing plastic ...
IN a recent communication by Proom and Woiwod 1 commenting on circular paper chromatography, they state: “although the method is admirable for the separation of two or three substances, it is not a ...
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