He refined Foucault's approaches in 1926 working with improved rotating mirrors to evaluate time it took light to generate a spherical vacation from Mount Wilson to Mount San Antonio in California. The exact measurements yielded a speed of 299796000 m/s.[eighteen] سایت و سرور دانلود سافت۹۸ در داخل کشور و https://fernando35x44.oblogation.com/35584100/gifts-options