# History of Physics and Astronomy

This version sorts the important
events by name. The lifetimes of people are highlighted in

blue, important people are in

**bold
blue**.

## N

Nagasaki – nuclear bomb 1945

Naperian
logarithms 1614

Napier's bones 1617

National debt founded 1693

Nature of
Saturn's rings - James Clerk Maxwell 1857

Nautical almanac 1767

Nautilus (nuclear
submarine) launched 1954

Neptune discovered Adams and Leverrier, Johanne Galle
1846

Neptunium discovered 1940

Neutrino - Pauli 1931

Neutrino (

n_{m}) discovered 1961

Neutrino theory of beta decay
1934

Neutrino detected – Reines and Cowan 1953

Neutron – Chadwick
1932

Neutron diffraction 1936

Neutron diffraction – Zinn 1947

Newcomen 1663-1729**Newton 1642-
1727**Newtonian bending of light by the Sun predicted – Johann von Soldner
1801

Newtonian reflector 1671

Newton's law of cooling 1701

Newton's rings
1665 (?1704)

Nicol prism 1829

Nipkow disc 1884

Nobel died 1896

Nobel
prizes instituted 1901

Non conservation of parity – Lee and Yang 1956

Non-isotropic
cosmic background radiation detected 1981

Nuclear aircraft carrier USS Enterprise in
service 1961

Nuclear atom theory – Rutherford 1911

Nuclear batteries
1956

Nuclear breeder reactor 1952

Nuclear explosion – first nuclear explosion –
Alamogordo desert in the USA 1945

Nuclear force theory – Yukawa 1935

Nuclear
power station - Calder Hall began operation 1956

Nuclear power station – Calder Hall
officially opened by the Queen 1961

Nuclear power stations – Bradwell and Berkeley
built 1962

Nuclear power stations – Dungeness A, Hinkley Point A, Trawsfyndd
1965

Nuclear power station - Oldbury 1966

Nuclear power station - Sizewell
1966

Nuclear powered aircraft carrier USS Savannah 1959

Nuclear reactor – fast
reactor - Dounreay at 60 MW 1966

Nuclear test ban treaty signed 1963