T.O History Flashcards
Who discovered infrared
Frederick Herschel
Who discovered infrared
Frederick Herschel
-clear understanding of optics
- also known as corpuscular theory
SIR ISAAC NEWTON
-also known as UNDuLATORY THEory
-christian huygens
Performed a decisive experiment
that seemed to demand a wave
interpretation, turning the side of
support to the wave theory of
light.
Thomas YOUNG
a
German scientist, in 1900.
● Stated that light waves travel as
separate packets of energy
called quanta or photons.
● Merged the subjects of the
Corpuscular, Wave, and
Electromagnetic Theories
together.
● Later, it was proved that the
correct and most accurate theory
was the Quantum Theory.
MAX PLANCK
performed
experimental support for the
wave theory
HEINRICH HERTZ
published
results of his experiments and
analysis, which required that light
be a transverse wave. He
assumed that light waves in an
ether were necessarily
longitudinal, light rays can not
pass around obstacles
AUGUSTIN FRESNEL
predicted that there should be
light with even longer
wavelengths than infrared light
● Early discovery of radio wave
JAMES CLERK MAXWELL
demonstrated the existence of
the waves predicted by Maxwell
by producing radio waves in his
laboratory.
HEINRICH HERTZ
An American physicist and
electrical engineer who invented
the magnetron, a vacuum tube
that generates high-frequency
electromagnetic waves, including
microwaves.
ALBERT WALLACE HULL
an engineer at
Raytheon, accidentally discovered
that microwaves could heat food when
a chocolate bar melted in his pocket
during radar experiments. This led to
the invention of the microwave oven
PERCY SPENCER
series of experiments with sunlight and
prisms. He demonstrated that clear
white light was composed of seven
visible colors.in a room with closed
shutters, he works with a small opening
to isolate a single ray of sunlight
ISAAC NEWTON
