References to silicon carbide heating elements exist within the early twentieth century after they have been produced by Acheson's Carborundum Co. in the U.S. and EKL in Berlin. Silicon carbide provided elevated running temperatures in comparison with metallic heaters. Also, radioactive isotopes like strontium-89 are used in focused radiation therapy https://borosilicate-glass-lined94714.mpeblog.com/62895529/helping-the-others-realize-the-advantages-of-diacetylferrocene-melting-point