To be extremely brief in describing this very complex subject, in 1805 Englishman John Dalton – considered to be the originator of modern atomic theory – proposed that each element that exists consists of atoms of a single, unique type, and that these atoms can join together to form chemical compounds. Although academics from earlier centuries and different cultures had also theorized about the existence of atoms, far greater understanding of the subject came about in the early part of the 20th Century when German (later to become American citizen) Albert Einstein produced papers and equations which eventually led to other important scientific developments towards our knowledge of atomic and molecular theory. His work also pre-empted the use of nuclear energy to produce the atomic weapons first used in the Second World War, though he was a pacifist. Many stamps have been produced to celebrate the various discoveries and achievements by atomic scientists over the years.

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1974, Liberation 6v

sab1741, Albania, 1974

1959, Peace movement 3v

sab0575, Albania, 1959

9.00
Mint NH
4.50
Unused (hinged)
5.00
Used or CTO

2003, Student day 1v

sagp1394, Algeria, 2003

2010, Nuclear experiments 1v

sag31001, Algeria, 2010

2019, Science day s/s

sag31905, Algeria, 2019

1969, Definitive 1v

sag0527, Algeria, 1969

0.70
Mint NH

1958, Atom for peace 2v

sah0472, Afghanistan, 1958

1958, Atom for peace 2v imperforated

sah0472b, Afghanistan, 1958

2.60
Mint NH

1980, Albert Einstein 3x2v [:]

saip0334, Aitutaki, 1980

1973, Nuclear tests 4v

saip0076, Aitutaki, 1973

1997, Tschernobyl catastrophe 2v

sanp2539, Antigua & Barbuda, 1997

2000, Albert Einstein s/s

sanpb464, Antigua & Barbuda, 2000

1998, 20th century inventions 8v m/s

sanp2799kb, Antigua & Barbuda, 1998

1998, Inventions of 20th century 8v m/s

sanp2791kb, Antigua & Barbuda, 1998

1982, Nuclear energy 2v

sat1582, Argentina, 1982

2000, Atomic energy 1v

satp2617, Argentina, 2000

1969, Development 3v

satp1046, Argentina, 1969

2.50
Mint NH

2003, Nuclear medicine 1v

satp2863, Argentina, 2003

0.70
Mint NH

1975, Sciences 4v

sau0579, Australia, 1975

1986, Int. year of peace 2v

sbb0252, Bangladesh, 1986

1958, United Nations 16v

sbe1100, Belgium, 1958

1981, Red Cross 2v

sbe2056, Belgium, 1981

1.80
Mint NH
2.00
First Day Cover

1966, Euratom Mol 1v

sbe1438, Belgium, 1966

0.70
Mint NH

1982, Science 3v

sbe2088, Belgium, 1982

2.40
Mint NH
2.00
First Day Cover

1961, Euratom 3v

sbe1255, Belgium, 1961

0.70
Mint NH

1995, Europa, peace & freedom 2v

sbe2649, Belgium, 1995

4.00
Mint NH
1.00
Used or CTO

1997, Tschernobyl catastrophe 1v

sbjp1702, Bhutan, 1997

2.00
Mint NH

1981, Nuclear institute 1v

sblp2970, Bulgaria, 1981

1982, Anti nucleair campaign 1v

sblp3108, Bulgaria, 1982

2009, Science Academy 1v

sbl30928, Bulgaria, 2009

1987, Atom power institute 1v

sblp3604, Bulgaria, 1987

0.70
Mint NH

1995, Roentgen birthday 1v

sbzp2668, Brazil, 1995

1963, Nuclear energy 1v

sbz1041, Brazil, 1963

0.70
Mint NH

1971, E. Rutherford 1v

sca0477, Canada, 1971

0.70
Mint NH

1966, Atomic power 1v

sca0393, Canada, 1966

0.70
Mint NH

1980, Uranium resources 1v

sca0776, Canada, 1980

0.70
Mint NH

2005, World physics year 2v [:]

scda0502, Costa Rica, 2005

1969, Education 4v

sce0387, Sri Lanka (Ceylon), 1969

1984, Against destruction arms 1v

scfp0952, Congo Republic, 1984

1.20
Mint NH

1958, International co-operation 3v

sch0392, China People’s Republic, 1958

1958, Nuclear energy 2v

sch0420, China People’s Republic, 1958

1979, 4 may movement 2v

sch1482, China People’s Republic, 1979

1979, Reform programme 4v

sch1516, China People’s Republic, 1979

1979, Youth expo 1v

schp1520, China People’s Republic, 1979

2021, Innovations 5v

sch32127, China People’s Republic, 2021

2.30
Mint NH

1990, Achievements 4v

schp2303, China People’s Republic, 1990

2.00
Mint NH

2006, Scientists 4v

scha0611, China People’s Republic, 2006

8.00
Mint NH

1979, Youth & science s/s

schpb019, China People’s Republic, 1979

1,450.00
Mint NH

1978, Science conference s/s

schpb011, China People’s Republic, 1978

475.00
Mint NH

1973, Nuclear testing treaty 6v

sck0359, Cook Islands, 1973

1984, Atom energy commission 1v

scl1041, Chile, 1984

0.70
Mint NH

1986, Famous persons 2v

scn1138, Cameroon, 1986

2.00
Mint NH

1964, University 8v

scpp0155, Congo (Kinshasa), 1964

2001, Environment 2v

sct0540, Turkish Cyprus, 2001

3.00
Mint NH

1938, Anti cancer, curie 2v

scv0156, Cuba, 1938

2004, Minerals 5v

scvn4g4a, Cuba, 2004

1995, Rontgen 2v

scwp0690, Cape Verde, 1995

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