Sayyed Mahmoud Hessaby (February 23, 1903, Tehran – September 3, 1992, Geneva) was an Iranian scientist, researcher and professor of University of Tehran. During the congress on "60 years of physics in Iran" the services rendered by him were deeply appreciated and he was called "the father of modern physics in Iran"
Hessaby was born in Tehran to Abbas and Goharshad Hessaby. When he was seven, the family moved from Iran to Beirut in Lebanon where he attended school.
At seventeen he obtained his Bachelor's in Arts and Sciences from the American University of Beirut. Later he obtained his B.A. in civil engineering while working as a draftsman. He continued his studies and graduated from Engineering school of Beirut.
Hessaby was admitted to the École Superieure d'Electricité and in 1925 graduated while he was employed by the SNCF (French National Railway). He started working in the electric locomotive maintenance department. He was a scientific mind and continued his research in Physics at the Sorbonne University and obtained his Ph.D. in Physics from that University at the age of twenty-five.
Dr Hessaby was a Polymath,[3] with five Bachelor's degrees in literature, civil engineering, mathematics, electrical engineering and mining engineering. He continued lecturing at University of Tehran for three working generations, teaching seven generations of students and professors.
In 1947, he published his classic paper on "Continuous particles". Following this, in 1957 he proposed his model of "Infinitely extended particles".
As Hessaby wished, he was buried in his hometown, Tafresh.
دوری که در او آمدن و رفتن ماست
او را نه بدایت نه نهایت پیداست
کس می نزند دمی در این معنی راست
کاین آمدن از کجا و رفتن به کجاست
