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A history of the atom, from the ancient Greeks to the early 20th century, and a new challenge for the world of physics. Ch Frame Code Title 1 A Opening Sequence 2 02505 G Ultimate Constituents Of ...

Listen to the full series on BBC Sounds. Hans Geiger and Ernest Marsden tested the plum pudding model. They aimed beams of positively-charged particles at very thin gold foil. These particles should ...

A new way to improve how we measure the age of planetary evolution in our solar system has been identified by a team of researchers. Research led by the University of Portsmouth has identified a new ...