|
Month
|
Name
|
Event / occurence
|
1900 Man flies.
|
|
Jan.
|
Jan Rather
|
Described
the ‘half life’ of Radioactivity.
|
|
Apr
|
Paul
Villard
|
Discovered
alpha rays.
|
|
Jul.
|
Count Zeppelin.Ger.
|
First Zeppelin
flight over a lake about 20km/h speed.
|
|
Dec.
|
Max Plank
|
Introduced
the view of discrete packets of energy. Quanta.
|
|
Radiation 1901 blood grouping
|
|
Jan.
|
T.
Montgomery
|
Described ‘meiosis’.
A type of cell division.
|
|
Nov.
|
Aloi
Alzheimer
|
Recognised
the disease Alzheimer.
|
|
|
K
Landstein.
|
Identifies
A and B blood groups.
|
|
Dec.
|
Rutherford
& Soddy.
|
Explained
radioactive decay.
|
|
Wireless
signals 1902 Cars rolling
|
|
Jan.
|
N Stubble
field
|
Sent the
first wireless sound signal.
|
|
Feb,
|
Stanley
motors
|
Developed
the steam car.
|
|
Aiming space
1903 Powered flights
|
|
Mar.
|
M. Tsvet
|
Introduced
chromatography.
|
|
|
K
Tsiolowski. Rus.
|
Described
the possibility of using rockets in space.
|
|
Sep.
|
George
Darwin
|
Showed
that radioactivity heats the Earth.
|
|
|
Marie
Curie
|
Gets the
doctorate.
|
|
|
Rutherford
|
Elected to
Royal society.
|
|
|
Hantaro
Nagaoka
|
Developed
the earliest published quasi-planetary model of the atom.
|
|
1904 Dawn of electronics
|
|
|
C Konning
|
Showed that
fungi decomposes organic matter.
|
|
Mar.
|
J J
Thomson
|
Introduced
the plum pudding model of the atom.
|
|
June
|
E Maunder
|
Described
the sun spot pattern.
|
|
Nov.
|
Br. patent
|
Thermionic
diode valve.
|
|
Dec.
|
D Perrine
|
Discovered
the 10th moon of Jupiter.
|
|
1905 Miracle
year of Einstein.
|
|
Jun.
|
A Einstein
|
Explained
the ‘photo electric effect’.
|
|
July
|
A Einstein
|
Explained ‘Brownian
motion’.
|
|
Sep.
|
A Einstein
|
Introduced
the ‘Special theory of relativity’.
|
|
Oct
|
E. Wilson
|
Described
XX and XY chromosomes in sex determination.
|
|
Nov
|
A Einstein
|
E = mc2
|
|
1906
|
|
|
R Oldham
|
Identified
the P, primary and S, secondary waves in seismic waves due to earthquakes.
|
|
Dec.
|
R Fessenden
|
Transmits first AM entertainment broadcast.
|
|
1907
|
|
Feb.
|
L De
Forest
|
Patents
the triode.
|
|
|
B Boltwood
|
Explain
radioactive dating of minerals.
|
|
|
R Millikan
& H Flecher
|
Oil drop
method of measuring charge of an electron.
|
|
|
Rutherford
|
Returned
to England to become professor of physics at Manchester University.
|
|
1908
|
|
Feb
|
Rutherford
& Geiger
|
Introduce
a method to ,measure radioactivity.
|
|
Jul.
|
H K Onnes
|
Liquefies
helium.
|
|
|
W Ramsay
&R Whytlaw
|
Discover
Radon gas.
|
|
Aug.
|
Orville
& Wilbur wright
|
Powered
aircraft flight.
|
|
|
Er
Rutherford&Geiger
|
Gold foil
expt
|
|
Dec.
|
K Landsteiner&E
Popper
|
Viral
identification of Polio.
|
|
|
Rutherford
|
Gets the
Nobel Prize
|
|
1909
|
|
Feb.
|
Ruther
&T Royds
|
He
recognised as alpha
|
|
May.
|
bayer
|
sulphonamide
|
|
|
S serenson
|
Introduced
the pH. Scale to show acidity.
|
|
Jun.
|
Ruther
|
Gold leaf scattering
was explained.
|
|
Dec
|
Baekelandt
|
Developed
a synthetic material later called Bakelite
|
|
|
Rutherford
& T Boyd
|
Recognise
alpha particles devoid of electrons.
|
|
1910
|
|
Jan
|
L de
forest
|
Broadcasts
the first live musical programme.
|
|
Jun.
|
J.H. Vincent
|
First
effective Typoid vaccine
|
|
Sep.
|
Madam Curie
|
Discovered
radium
|
|
Oct.
|
R.W wood
|
Obtained
an Infra red photograph
|
|
1911
|
|
Jan
|
W bradford
|
Links
epinephrine & stress
|
|
Feb
|
C F Kettering
|
Elect
starter
|
|
Mar
|
Carl Bosch
|
Haber
process
|
|
|
Rutherford
|
Identified
the nucleus of an atom. Introduced the planetary model of atom.
|
|
Apr
|
K onnes
|
Discovered
superconductivity.
|
|
May
|
Boris
&v zworykin
|
Transmits
a scanned image using cathode ray tube.
|
|
Jul
|
Van den
broek
|
Showed
that Nuclear charge indicates the
place in Periodic table.
|
|
1912
|
|
Jan
|
Alfred
wegener
|
Super
continent and drifting of continents.
|
|
Apr.
|
W Friedrich
& Knipping
|
X ray
analysis of crystals
|
|
Sep.
|
Vesto Sipher
|
Andromeda
g moving away from sun
|
|
Nov.
|
W. Bragg
|
X ray diffraction
of crystals.
|
|
|
Niels Bohr
|
Amalgamates
the Atomic theory with the Maxwell quantum theory.
|
|
1913
|
|
Feb
|
F. Soddy
|
Introduced
the term ‘isotope’.
|
|
Apr.
|
N Bohr
|
Quantum model of atomic structure
|
|
|
Arthur Holmes
|
Calculated
the Age of earth
|
|
Dec.
|
H Mosely
|
Gave a
relationship between Atomic number and
x rays produced by them.
|
|
1914
|
|
Mar.
|
A Hustin
|
First
blood transfusion from a person to another.
|
|
july
|
R Goddard
|
Patented a
Solid rocket to be sent to space.
|
|
|
J.J. Thomson
|
Developed
the Mass spectrometer
|
|
|
H Dale
|
Identified
the hormone ‘acetylcholine’.
|
|
|
Rutherford
|
Suggested
that protons are together in the
nucleus.
|
|
1915
|
|
Jan.
|
G Claude
|
Introduced
the Neon discharge tube.
|
|
Mar.
|
us
|
Founded
the NACA the predecessor to NASA.
|
|
|
Lowell obsevatory
|
Photographed
pluto
|
|
Sep.
|
Einstein
|
Published
the General theory of relativity wich predicted space time curvature.
|
|
|
Alfred Wegener
|
Introduced
the theory of Continental drift
|
|
1916
|
|
Jan.
|
Royal army
|
First blood
transfusion with stored blood.
|
|
Apr.
|
Gilbert
|
Described
the chemical Bonds as due to electron sharing.
|
|
|
H Shapely
|
Described
the Milkyway.
|
|
|
A Cushny
|
Explained
how kidney filters urine.
|
|
|
F. d‘ Herelle
|
Identified
‘bacteriophages’.
|
|
|
P Langevin Fr.
|
Echo
sounding to detect sub
|
|
|
K.
Schwarzchild
|
Used Einstein's Theory of General
Relativity to define a black hole. Defined gravitational radius of black
holes,
|
|
1917
|
|
|
Rutherford
|
Converted Nitrogen to Oxygen.
Transmutation.
|
|
1918
|
|
|
H Shapely
|
Gave the dimensions
of milkyway.
|
|
|
Langevin
|
Introduced
ASDICS that led toRADAR.
|
|
Apr.
|
Rutherford
|
Suggested that hydrogen ions are the elementary
particles.
|
|
May.
|
A.Eddington
|
Tested the
Theory of relativity
|
|
Jun.
|
I Langmuir
|
Explained
the Co valent bond
|
|
Dec.
|
P Levens
|
Nucleotide
comp of dna
|
|
1920
|
|
Jan.
|
NY times
|
Ridicules
idea of solid rocket of Goddard.
|
|
Feb.
|
E
Mellanby.
|
Rickets caused
by vitamin deficiency. Later showed as
vitamin D.
|
|
Jun.
|
Rutherford
|
Coins the
term ‘proton’ for the positively charged particle.
|
|
Aug.
|
A.Eddington
|
Explained
that stars get energy by converting Hydrogen to Helium.
|
|
1921
|
|
Jul.
|
|
BCG
vaccine was introduced.
|
|
Aug.
|
F banting
& c best
|
Insulin
discovery
|
|
Dec.
|
Otto loewi
|
Acetylcholine
as neuro transmitter
|
|
1922
|
|
May.
|
Alex Oparin Rus.
|
Suggested
that Life evolved from non living matter.
|
|
|
Alex Friedman
|
A solution
to Einstein’s field equation of expanding universe
|
|
1923
|
|
|
G Lewis
|
Introduced
the Electron pair and base theory.
|
|
Sep.
|
L. de
broglie
|
Showed
that the Electrons have wave
properties
|
|
|
hubble
|
Andromeda
is outside milkyway
|
|
1924
|
|
Feb.
|
U.S.
|
IBM. was
founded
|
|
|
W Pauli
|
Exclusion
principle.
|
|
|
Satyendra
bose & Einstein.
|
Force
carrying particles ‘boson’
|
|
Nov.
|
L de Brogley.
|
Particle-wave
theory
|
| | | |
|
Dec.
|
E. Hubble. (Life photo)
|
Found that
the Milky way and Andromeda galaxy are 2.5 million light years apart. This
expanded the known Universe.
Fig.Astronomer
Edwin Hubble looks though the eyepiece of the 100-inch telescope at
California's Mt. Wilson Observatory, 1937.
|
|
1925
|
|
Mar.
|
J L Baird
|
Obtained TV images using a rotating disc.
|
|
Jun.
|
L.Friedericia
|
Discovered that night blind ness is due to lack of Vitamin A.
|
| | Meteor expedition Ger.
| Discovered the Mid Atlantic Ridge.
|
| Nov. | W. Pauli
| Explained the Exclusion principle.
|
