There was no such thing as a science of chemistry in the time of ... Limited as chemical knowledge was when the nineteenth century opened, there were, however, certain men at work, who had adopted ...

Since light passes unhindered through vacuums, including the vacuum between the stars and the earth, 19th century scientists were driven to postulate a “luminiferous ether.” which filled all ...

However, his legacy extends far beyond science. In the 19th century, Wallace's observations were striking. British imperialism was at its zenith, and the Industrial Revolution was fueling a ...