
An ancient Greek
philosopher.

He was an influential preSocratic philosopher
(pupil of Leucippus).
Formulated an atomic theory
for the cosmos.
 Believes there is a particle that
is the simplest building block of matter, named
"atomos" from the Greek word for "undivided."
 All atomos must have size, shape and weight as well.

http://edtech2.boisestate.edu/kilnerr/575/vftatom.html


Father of modern chemistry-meticulous
experimenter
The end of Phlogiston
 Married
Marie-Anne, who
was not quite 14 at the time.
 Madame
Lavoisier learned
English to translate the work of
British chemists.
 Guillotined!
Joseph
L. Proust (1754, France)
When
Napoleon invaded Spain,
they burned Proust's laboratory
and forced him back to
France.
Best
known for
Law of Definite Proportions.
http://www.vzhang.com/vzfiles/joseph_proust.htm


English chemist, meteorologist, and physicist
"Atomic Theory." Its tenets are as follows:
1. Elements are made of tiny particles called atoms.
2. All atoms of a given element are identical.
3. Atoms of a given element are different from those of
any other element. Atoms of different elements can be
distinguished from one another by their respective
weights.
4. Atoms of one element can combine
with atoms of another element in
simple, whole number ratios to form
compounds.
5. Atoms cannot be created, destroyed
or subdivided.
 English
chemist and physicist
 Contributed
to the fields of
electromagnestism and
electrochemistry.
 As
a chemist, Faraday discovered
benzene, invented an early form of the
Bunsen Burner and the system of
oxidation numbers.
 English
chemist and physicist
 Worked
on spectroscopy.
 He
was a pioneer of vacuum
tubes, Crookes tube.
 English
physicist.
-Discovery of the electron and of
isotopes, and the invention of the
mass spectrometer.
-Experiments with cathode rays
 German
physicist, mathematician,
astonomer, & philospher
 Theory
 Father
of General Relativity
of modern physics
 American
physicist
 Measurement
of the charge on
the electron- oil drop experiment

Worked on the photoelectric effect
 First
to earn a Ph.D. in physics from
Colombia
 New-Zealand
born English chemist and
physicist
 Father of nuclear physics
 Discovered the concept of radioactive
half-life
 Gold-foil experiment, discovery of
nucleus
 Danish
physicist
 Worked
out a picture of
atomic structure
 Worked
Project
on the Manhattan

English physicist
 Discovered
 Primary
the neutron
British scientist who
collaborated in the Manhattan
project