"S. Zolver Preston, in his "Physics of the Ether" says: "A quantity of matter only 1 gram and of the normal velocity of the ether, or a wave of light encloses a state of energy represented by 1,000,000,000 foot tons. Or the mass of a grain contains an energy sufficient to project a weight of 100 tons to a height of 1.9 miles."

See Physics of the Ether by Preston
Physics of the Ether - Part I
Physics of the Ether - Preface
Physics of the Ether - SECTION I
Physics of the Ether - SECTION II
Physics of the Ether - SECTION III
Physics of the Ether - SECTION IV
Physics of the Ether - SECTION IX
Physics of the Ether - SECTION V
Physics of the Ether - SECTION VI
Physics of the Ether - SECTION VII
Physics of the Ether - SECTION VIII
Physics of the Ether - SECTION X
Physics of the Ether - SECTION XI
Physics of the Ether - SECTION XII
Physics of the Ether - SECTION XIII
Physics of the Ether - SECTION XIV
Physics of the Ether - SECTION XIX
Physics of the Ether - SECTION XV
Physics of the Ether - SECTION XVI
Physics of the Ether - SECTION XVII
Physics of the Ether - SECTION XVIII
Physics of the Ether - SECTION XX
Physics of the Ether - SECTION XXI
Physics of the Ether - SECTION XXII
Physics of the Ether - SECTION XXIII
Physics of the Ether - SECTION XXIV
Physics of the Ether - SECTION XXV