1/7/2016. Unemployment Phone Number - I have called the unemployment of for 3 days now. I have called the unemployment of for 3 days now several times a day and its busy every time! Today I called 62 times and its busy every time.
The Barometer. Evangelista Torricelli became the first scientist to create a sustained vacuum and to discover the principle of a barometer. Torricelli realized that the variation of the height of the mercury from day to day was caused by changes in the atmospheric pressure.
Light Is a Wave! (Grimaldi and Huygens) The wave theory, which maintains that light is a wave, was proposed around the same time as Newton's theory. In 1665, Italian physicist Francesco Maria Grimaldi (1618 to 1663) discovered the phenomenon of light diffraction and pointed out that it resembles the behavior of waves. Then, in 1678, Dutch physicist Christian Huygens (1629 to 1695) established the wave theory of light and announced the Huygens' principle.