"Our age is... a practical one. It demands of us all clear and tangible results of our work" Theodor Svedberg, chemist The centrifuge has been around since the mid-1800s. It is a device for separating a precipitate from a solution by spinning it at high speeds (the increased gravitational force means that anything suspended in the solution is forced to the bottom of the container much fasterMore.
The image of a solar cell glistening in the sun illustrates many a magazine article on modern technology. But the means of converting light energy into electrical energy is nothing new. A "photovoltaic effect," whereby light hitting an electrode immersed in an electrolyte produces a current, was first observed in 1839 by A. E. Becquerel. This phenomenon was harnessed in 1884 when the first solar cMore.
Before the arrival of the search engine, computers were linked together simply to let people transfer files between themselves. Those who had files to share set up a server, and those who wanted the files would come and get them. In time these servers clumped together, and having lots of files in one place made them easier to find. But even with clumping, files were spread out over the Internet. IMore.
“I put a new engine in my car, but forgot to take the old one out. Now my car goes 500 miles per hour." Stephen Wright, comedian As anyone who has ever tried to start up an old automobile will tell you, a choke is a miserable thing to operate. Pull it out too far and you flood the engine, do not pull it out far enough and the engine will not fire. It is not surprising, therefore, that More.
"We may see and hear a whole Opera as perfectly as If actually present" U.S. Patent Office description for the Kinetoscope Motion pictures and even television may never have become a reality if it were not for the creation of the Kinetoscope by Thomas Alva Edison (1847-1931) and his deputy William Dickson (1860-1935) in 1891. The idea of moving still frames in quick succession to give the illusiMore.