Periodic table
The organization of the periodic table can be used to derive relationships between the various element properties, and also to predict chemical properties and behaviours of undiscovered or newly synthesized elements. Russian chemist Dmitri Mendeleev published the first recognizable periodic table in 1869, developed mainly to illustrate periodic trends of the then-known elements. He also predicted some properties of unidentified elements that were expected to fill gaps within the table. Most of his forecasts proved to be correct. Mendeleev's idea has been slowly expanded and refined with the discovery or synthesis of further new elements and the development of new theoretical models to explain chemical behaviour. The modern periodic table now provides a useful framework for analyzing chemical reactions, and continues to be widely used in chemistry, nuclear physics and other sciences.
Thomas Fale
His only known publication is "Horologiographia" (1593). It is dedicated in Latin to all lovers of mathematics in the University of Cambridge. There is also a prefatory letter to ‘my louing kinsman,’ Thomas Osborne, who had invented the instrument mentioned in the beginning of the book ‘for the triall of plats,’ dated from London, 3 January 1593. The table of sines which it contains is probably the earliest specimen of a trigonometrical table printed in England.