My Inventions_ The Autobiography of Nikola Tesla PDF
Nikola Tesla was an Electrical Engineer and great innovator in history who was awarded about 300 patents, he discovered and …
Explorer/Navigator/Voyager
Edwin Hubble Biography PDF
Edwin Hubble was born 20th November 1889year, Marshfield, US and he was passed on on 28th September 1953year,san marino, California…He was an …
100 Influential Scientists PDF
Here 100 influential scientists are listed, with their inventions and biography…These scientists were changed the world…Read about them …