The document discusses the history of atomic models. It describes several scientists and their contributions: John Dalton proposed atoms could not be divided; J.J. Thompson discovered the electron; Ernest Rutherford developed the nuclear model through gold foil experiments; Robert Millikan studied electron charge with oil drops; and Niels Bohr incorporated quantum theory into the atomic model by proposing electrons orbit the nucleus in defined energy levels.

1. Atomic Physics
Teacher Bangyee Aloneman
มีแฟนแล้ว 555+

2. Atomic Model
John Dalton
1766-1844
Atom = แบ่งแยกไม่ได้

3. Atomic Model-Finding electron
Sir Joseph J. Thompson
1856 –1940

4. Atomic Model – Gold sheet
Ernest Rutherford
1871–1937

5. Atomic Model – Oil drop
Robert Andrew Millikan
1868-1953

6. Atomic Model – Excite electron
Niels Bohr
1885 –1962