خواندن بعدی
Before the spread of the Internet, everyone dealt with letters and stamps. One of the pastimes of that time was to separate the stamp from the envelope and keep it. I also had a stamp album when I was a …
– شیوع بیماری حصبه، زندگی و کودکی را به او که هنوز ۶ سال بیشتر نداشت تلخ کرد. اول مادرش و پنج روز بعد پدرش درگذشتند و سرپرستی او را پدربزرگش به عهده گرفت. – پس از دارالفنون به دانشسرای …
In below tables the elements are arranged by atomic number with the year of discovery and the discoverer. The discovery of an element made the discoverer well known and also gave credit to his/her country. Source: Encyclopedia of the Elements, …
