Ill approximately every week, she died on October 5, 1818. She concerned thirty five years. Her son was nine.. In 1873 James Clerk Maxwell had ghd eclipse usa presidents started a new road to development with equations that described the electromagnetic field, and he predicted the use of electromagnetic waves travelling using the speed regarding. Heinrich R. Hertz confirmed this prediction experimentally, and Marconi first exploited these waves in developing radio (1895).
