Читать книгу Invention and Discovery: Curious Facts and Characteristic Sketches - Anonymous - Страница 17

Table of Contents

Mr. Green has the merit of being the first person who made experiments on the buoyant properties of Coal Gas. In some of his preliminary trials, he ascertained that the ascensive force of a small balloon, three feet in diameter, was equal to eleven ounces; but, when filled in the old way, with hydrogen gas, not more than fifteen ounces.