Gypsum

 

                                                                            Gypsum 

 

History Of Gypsum

7000–8000 BCE: Early construction use recorded in Anatolia (Turkey) and floor foundations in Israel.

 

3000 BCE: Applied as mortar blocks and wall plaster in the construction of Egyptian pyramids 

1508–1512 CE: Michelangelo painted the Sistine Chapel ceiling directly on wet gypsum plaster 

 

 

  

 

Past To Present 

 

 

 

 

 

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                                                                              Black Death 

 

 

 

 

Santa Fe, New Mexico 

 

A Santa Fe County woman died from plague on June 11, 2026, marking New Mexico's first human case and fatality of the year. 

 

 

 

 

 

Yersinia Pestis Stained On Wayson Stain = Safety Pin Appearance

 

 

 

 

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Blast From The Past: Britain Declares War On Germany

 

                                                                        August 4, 1914  

 

 

 

 

 

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Blast From The Past: American Dental Association

  

                                                        August 3, 1859 

          The American Dental Association is founded in Niagara Falls, New York. 

 

 

 

 

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Calcofluor White

                                                             

                                                                Dye To Improve Whiteness 

Calcofluor White  is a fluorescent dye originally developed for the textile and paper industries as an optical brightener 

 

Optical Brightener: Improve the whiteness and brightness of textiles, paper, and detergents by absorbing ultraviolet (UV) light and emitting blue fluorescence. 

The chemical was introduced commercially by the American Cyanamid Company under the trade name Calcofluor White. Its primary industrial role was as a fluorescent whitening agent. 

 

 

 

 

1977: A landmark study by Richard D. Hageage Jr. and Mary S. Harrington demonstrated the effectiveness of Calcofluor White combined with potassium hydroxide (KOH) for the rapid diagnosis of fungal infections in clinical specimens. The KOH dissolved host tissue while Calcofluor White highlighted fungal elements under ultraviolet microscopy, greatly improving sensitivity and speed. 

 

 

 

 

                                                  Calcofluor White In Clinical Mycology

 

 

 

 

 

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