the Greek Philosophers did not test their theory.
No. Scientists have discovered sub-atomic particles such as quarks.
Bulletin of the Atomic Scientists was created in 1945.
Building an atomic bomb was not an easy thing. It took some scientists to build it.
Physicists and nuclear scientists create atomic bombs.
British Atomic Scientists Association was created in 1946.
IUPAC proposed the atomic weight (243).
No one proposed it. It IS about the atomic number.
the symbol scientists use to represent the atomic mass number is the letter U.
The first atomic model was proposed by the Greek philosopher Democritus in 442 BC.
It was proposed independently by Haim Harari and by Michael A. Shupe.