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> Around 1988, I added phase shift to my optical thin film design program written in Excel 4.0 for the Mac. Excel 4 was released in 1992. In 1988 the only vers
by Narishma 5y ago
> Around 1988, I added phase shift to my optical thin film design program written in Excel 4.0 for the Mac.
Excel 4 was released in 1992. In 1988 the only version of Excel that would have been available on the Mac would be the very first one.