Comment Comment by HAPMCEZ From Section 25 point 1, Historical Introduction> In 1801 Johann Wilhelm Ritter, a Polish physicist working at the University of Jena in Germany discovered a form of light beyond the violet end of the spectrum that he called “Chemical Rays” and which later became “Ultraviolet” lightChemical Rays parent HAPMCEZ 6 years ago
> In 1801 Johann Wilhelm Ritter, a Polish physicist working at the University of Jena in Germany discovered a form of light beyond the violet end of the spectrum that he called “Chemical Rays” and which later became “Ultraviolet” light
Chemical Rays