In the year 1900
there was a flowering of genius in practically every sphere of human activity;
Paris and Vienna are often singled out as housing major explosions
of brilliance as the twentieth century began, but there were great
achievements throughout the world.
In this issue, Shebang picks out just two of that period's
most influential people, whose works were made public one
hundred years ago:
Max Planck and Sigmund Freud.
Max Planck
coined the term 'quantum', and provoked a scientific upheaval that
he himself grew to regret. On the 19th of October 1900,
he announced a new formula at a meeting of the Berlin Physical
Society; his calculations were based on the fact that as objects became
hoter or colder, the changes in energy occurred in (exceedingly small)
bursts or jumps; quanta.
The title page
of Sigmund Freud's book 'Die Traumdeutung' - 'The Interpretation
of Dreams' - declares that it was published in 1900. In fact
it was published on November 4th 1999, but his rather large
volume is a quintessential 20th century book.
Max Planck
Born Kiel, Germany April 23 1858 - Died unknown, USA, October
4 1947
In 1874, young Max
Planck entered the University of Munich. Before he began his studies
he discussed the prospects of research in physics with Philipp
von Jolly, the professor
of physics there. Oddly enough the professor warned him off his own subject.
In fact, von Jolly told Planck that physics was essentially a complete
science with little prospect of further developments.
By the time he was
thirty-two he found himself telling people that he identified somewhat
with Newton; he was on the threshold of a major discovery. What Planck,
a most conservative and regular
person, did not realise, and later grew to regret, was that he had ushered
in what has been called 'the most revolutionary idea which has ever shaken
physics.'
The way he did
it was to introduce a cheat into the mathematics, which, after a great
deal of work and thought, he realised was Nature's cheat.
In 1897 Planck
began work on a problem which later came to be called 'the ultraviolet
catastrophe'. Most people will know what a 'red hot poker' is,
or will have seen a glowing red coil on an electric cooker. In fact
metals can get a great deal hotter than red hot, and as the heat inside
them becomes more and more intense, their colour will change, going through
the 'spectrum' - from red via orange and blue, all the way to white
and ultra-violet.
If the absorption
and emission of this radiation were to take place in a continuous
progression, the energy involved would be unbounded, and at
the ultraviolet level would be cataclysmic. This did not happen in nature,
and it made no sense in scientific terms, given what was known at then,
which Planck continued for some time to trust.
In a way he solved
the problem in a back-to-front fashion, by working with the mathematics
involved. Of all the attempts to calculate what was going on,
there was one partly successful idea proposed by the German physicist
Wien for radiation at the lower-frequency, or infra red level, and one
by the Englishman Lord Rayleigh, which dealt with the high frequency,
ultra-violet region.
Planck saw a logical
way of combining the best features of those two mathematical expressions,
and presented that formula to his colleagues. The agreement between his
calculations and experimental results was excellent, but no-one had a
clue what they might mean.
Still expecting that
as black objects were heated, their energy changes would flow smoothly,
Planck looked again and again at the figures.
For the sake of the
calculations, he was forced to consider a hypothesis which broke drastically
with 19th century physics. As he later said: '....the
whole procedure was an act of despair because a theoretical interpretation
had to be found at any price, no matter how high that might
be.'
He considered the
possibility that in black body radiation, the energy changes in bursts
or jumps. These were later called 'leaps', and they are extremely small.
[The number involved
is .000 000 000 000 000 000 000 00 0066 erg seconds. . This is usually
expressed as 6.6 X 10-27 erg seconds. Planck
assigned to that number the letter h, so that E -or energy - is equal
to h times the frequency, or E=hf]
By the end of 1900
Planck had more or less completed a theoretical deduction of his
formula renouncing classical physics and introducing the quanta of energy.
At first the theory met with resistance but due to the successful work
of Niels Bohr in 1913, calculating positions of spectral lines using the
theory, it became generally accepted.
Planck received
the Nobel Prize for Physics in 1918. Despite having invented quantum theory
Plank did not understand it himself at first. What's more, it pained him
throughout his life that the idea for which he was most famous had given
the world quantum theory and quantum mechanics; they contained notions
which troubled him deeply.
' I tried immediately
to weld the elementary quantum of action somehow into the framework of
classical theory. But in the face of all such attempts
this constant showed itself to be obdurate ... My futile attempts to put
the elementary quantum of action into the classical theory continued
for a number of years and they cost me a great deal of effort.'
Biographical note:
Max Planck remained in Germany during World War II. Throughout his
life, war would cause him deep personal sorrow. (The same was true of
Freud) Planck lost his eldest son during World War I. In World War
II, his house in Berlin was burned down in an air raid. In 1945
his other son [Erwin] was executed when declared guilty of complicity
in a plot to kill Hitler.
Sigmund Freud
Born Pribor, Moravia,
May 6, 1956. Died London, September 23 1939
From the earliest
times, people have dreamed, and told their dreams, and have believed that
dreams will make you better. And
yet it has justly been said that Freud's book 'The Interpretation
of Dreams' is one of the most significant books of the last
20th Century.
Sigmund Freud has
been lavished with praise and castigated, honoured and reviled, rejected
and rehabilitated many times.
Ridiculed throughout his life, he found it extremely difficult to be heard
- and once heard, his work has always been under attack.
He has received particularly rough treatment at the hands of feminists.
And yet there are women writers such as Juliet Mitchell
who appear - at least to an extent - to defend him.
Freud poured into
'The Interpretation of Dreams' the distillation of twenty years'
work and thought, and a great deal of experience with patients. He also
had to employ a large measure of self-analysis.
The book markes the
beginning of new ways of understanding the mind. It is certainly the start
of the theory of a dynamic
unconscious, created in childhood, which is operating continuously in
both normal and 'abnormal' minds.
Freud called the
interpretation of dreams the 'Royal road' to the discovery of the unconscious
- that is to say, it is the
'King's highway' along which everyone can travel to discover the truth
of unconscious processes for themselves.
Everybody dreams.
The argument in Freud's book The Interpretation of Dreams goes something
like this:
(1) "Dreams are the
fulfilment of a wish"
(2) "Dreams
are the disguised fulfilment of a wish"
(3) "Dreams
are the disguised fulfilment of a repressed wish"
(4) "Dreams
are the disguised fulfilment of a repressed, infantile wish"
While
current work in neuroscience is leading to discoveries in brain function,
past work has led to better understanding of the brain as chemistry. This
work, which was presaged
by Freud when he tried to integrate his observation of dreaming with the
biology of his time, has led to breakthroughs in drug
therapies for many mental illnesses including manic-depressive illness,
depression, schizophrenia, and psychosis.
The line where the
brain and behavior meet is also now the focus of much of modern neuroscience.
And dreams are proving to be a foundation for much of that research.
After a brief period when dreams were thought to be little more than mental
fireworks, scientists are finding that they provide many insights
into the mind's workings.
Modern scientists, using technology such as PET scans are discovering
that Freud's "road" is indeed "royal."
Freud in a letter
from Schloss Bellevue. 'Life at Bellevue is turning out very pleasantly
for everyone. Do you suppose that some day a marble tablet will be placed
on the house, inscribed with these words:
"In this house on July 24th 1895 the Secret of Dreams was revealed
to Dr. Sigmund Freud"?'
Freud again: '...if
I was to report my own dreams, it inevitably followed that I should have
to reveal to the public gaze more of the intimacies of my mental life
than I liked, or than is normally necessary for a man of scince
and not a poet. Such was the painful but unavoidable necessity; and I
have submitted to it rather that totally abandon the possibility of giving
the evidence from my psychological findings." The Interpretation of
Dreams.
The book had a 'powerful
subjective meaning' for Freud, which he had been 'able to understand only
after its completion'.
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