IN an earlier paper1, we have described a new type of interferometer which has been used to measure the angular diameter of radio stars2. In this instrument the signals from two aerials Ax and A2 (Fig ...

Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...

Handle millions of rows by loading queries into Power Pivot, building relationships, and creating measures for fast variance ...

Microsoft's spreadsheet program can do way more than you might imagine. These are the hacks and tricks you need to know.