Showing posts with label History. Show all posts
Showing posts with label History. Show all posts

5 Niels Bohr Quotes On Quantum Mechanics

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Niels Bohr was a Danish physicist who made pioneering contributions to understanding atomic structure and quantum theory, for which Bohr was recognized with a Nobel Prize in 1922. Bohr was an active participant in the new quantum theory revolution that shook the foundations of classical physics.

Einstein, who was not ready to accept Heisenberg's uncertainty principle, as one of the cornerstones of modern physics, commented: God does not play dice with the universe. Bohr made peace with the uncertainty principle by developing the principle of complementarity.

According to complementarity, particles have certain pairs of interdependent properties that cannot all be observed or measured simultaneously. For example: position and momentum make such a pair.

Bohr regarded complementarity as an essential feature of quantum mechanics. It is said that Bohr replied to Einstein, who preferred the determinism of classical physics over the probabilistic new quantum physics: (1) "Stop telling God what to do."

In 1920, Bohr met Heisenberg for the first time. Bohr said, (2) What is it that we humans depend on? We depend on our words... Our task is to communicate experience and ideas to others. But when it comes to atoms, language can be used only as in poetry. The poet, too, is not nearly so concerned with describing facts as with creating images and establishing mental connections.

Some physicists depended on mathematical analysis to make sense of the quantum world. However, Bohr was not satisfied. (3) Even the mathematical framework helps nothing, I (Bohr) would first like to understand how Nature avoids the contradictions. (1927)

Bohr said further: Our experience in recent years has brought light to the insufficiency of our simple mechanical conceptions and, as a consequence, has shaken the foundation on which the customary interpretation of observation was based.

We can still use the objectifying language of classical physics to make statements about observable facts. But we can say nothing about the atoms themselves.

In the 1927 Solvay conference, Bohr and Einstein went head-to-head on the metaphysical and philosophical implications of quantum mechanics. Two legends, one defending the new-age probabilistic physics and another fighting for classical determinism. At the end, it was Bohr who emerged victorious and successfully established the probabilistic character of quantum measurement.

Niels Bohr wrote in 1934: (4) Isolated material particles are abstractions, their properties being definable and observable only through their interaction with other systems. Everything we call real is made of things that cannot be regarded as real.

In a 1952 conversation with Heisenberg and Pauli in Copenhagen, Bohr quipped: (5) "Those who are not shocked when they first come across quantum theory cannot possibly have understood it." This was most likely a reference to Einstein, who not only contributed to the new theory but also immediately taken aback by its bizarre results.

Five Quotes By Paul Dirac On Religion

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Paul Dirac was one of the most influential physicists of the 20th century who made pioneering contributions to quantum mechanics. Dirac predicted the existence of anti-matter in 1928 and won the Nobel Prize for physics in 1933.

According to Dirac, (1) God is a mathematician of a very high order and He used very advanced mathematics in constructing the universe. Many believers take this quote as proof that the greatest scientific thinker of the past century is one of their own.

However, it is forgotten that as a devoted physicist Paul Dirac stayed away from religious activity as far as he could. Dirac was well known for being against organized religion as its influence grew politically.

At the same time, Dirac did not identify clearly as an atheist like other physicists as Bohr, Feynman and Hawking, but he described the possibilities for scientifically answering the question of God. Most biographers today would agree that Dirac was an agnostic.

In 1927 Solvay conference, scientists were discussing religious and/or spiritual implications of quantum mechanics, to which Dirac strongly objected, saying: (2) I cannot understand why we are talking about religion. If we are honest—and scientists have to be—we must admit that religion is a jumble of false assertions, with no basis in reality. The very idea of God is a product of the human imagination.

As a young man, Dirac was upset by dishonesty and self deception in religion. He understood how religion was a political tool as he said: (3) If religion is still being taught, it is by no means because its ideas still convince us, but simply because some of us want to keep the lower classes quiet. Quiet people are much easier to govern than clamorous and dissatisfied ones.

Niels Bohr was impressed by this viewpoint, regarding it as "quite lucid". Werner Heisenberg was tolerant, while Wolfgang Pauli commented: (4) Our friend Dirac has his own religion and its guiding principle is, There is no God and Dirac is his prophet. Everybody present burst into feeble laughter, including Dirac.

In 1963, Dirac wrote for Scientific American that God used advanced mathematics in constructing the universe and as we develop higher and higher mathematics we can hope to understand the universe better.

Dirac mellowed as he grew older but still did not commit himself to any definite view. In 1971, Dirac proposed, (5) if life can start very easily and does not need any divine influence, then I will say that there is no god.

In other words, the discovery of life elsewhere in the universe or creation of life in laboratory would convince Dirac that there is no god. In 1996, a team of scientists discovered evidence for microscopic fossil life in a meteorite from Mars. But more research needs to be done on this.

In the meantime, scientists are looking for earth-like planets or mimicking conditions necessary for the creation of life in laboratory. The possibilities are endless. It is only persistent observation and exploration that will bring us closer to answering the question of God.

7 Life Lessons From 7 Scientists To Inspire You

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Michael Faraday: Faraday was a famous English chemist and physicist who could not finish his schooling due to poverty. As a teenager, Faraday self-taught himself while working at a book binding shop. He discovered the laws of electrolysis and electromagnetic induction.

Faraday's pioneering work inspired the likes of Maxwell, Einstein and Tesla. Faraday shows that hard work and self-belief can take you places. That one must be humble and receptive to understand that knowledge is not limited to school books, knowledge is everywhere.

Marie Curie: Two time Nobel Prize winner Madame Curie is best known for the discovery of Radium. Curie lost her mother and her elder sister when she was only 10 years old. Her paternal home was burned to the ground amid war in Poland.

Yet, Curie's tragic childhood did not stop her from becoming a scientist 20 years later. She told her daughters: “Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves. We must believe that we are gifted for something, and that this thing, at whatever cost, must be attained.”

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Albert Einstein: German born physicist Albert Einstein settled in the United States after becoming an American citizen in 1940. As a university professor, Einstein was deeply disturbed by racism in the education system. He decided not to stay quiet about it, expressing publicly:

“The more I feel American, the more it pains me. I can escape the feeling of complicity in it only by speaking out that racism is America’s greatest disease”. Einstein was always known for challenging the norms. As a 15 year old, Einstein clashed with the authorities at his school as he believed that creative thought was lost in a strict rote learning.

Richard Feynman: Feynman was a Rockstar among physicists. He always jumped into an adventure challenging himself and the authority in question. Once Feynman learned Portuguese just to impress his Brazilian colleagues. He played Bongo drums and performed for students with his friend Ralph Leighton.

Feynman drew pictures of contemporary scientists including Dirac, Bethe and painted flowers in spare time. He always had time for hobbies beside solving the mysteries of physics. Feynman openly criticized NASA exposing the safety risks after the challenger disaster. What do you care what other people think? An attitude that Richard Feynman carried till the end of his life and you should too in your adventures in life.

Stephen Hawking: In life, one must be ever ready to face mental as well as physical challenges. Stephen Hawking was a promising student at the prestigious Cambridge university when he suddenly was diagnosed with the motor neuron disease.

The doctors advised Hawking to put his affairs in order as he had only a few more years to live. Despite all the odds, Hawking went on to complete his PhD couple years later, and also revolutionized physics for next half a century. He wrote several best selling books, starred as himself on many popular shows and experienced zero gravity. Stephen Hawking lived life to the fullest.

Isaac Newton: Newton needs no introduction. As the story goes, his genius was unleashed by the falling of an apple. Newton invented the necessary mathematics to explain the dozens of unexplained natural phenomena. He gave the three laws of motion and did pioneering work in optics.

But it is a misconception that Newton did all the work by himself. For one, Newton could not afford the publication of Principia and took the help of noted astronomer Edmund Halley. Secondly, Newton borrowed the idea for calculus from ancient Greek mathematics. Third, Newton built upon the works of Kepler and Galileo and acknowledged this by saying: “If I have seen further, it is by standing on the shoulders of giants.”

Nikola Tesla: Serbian inventor and engineer Nikola Tesla worked for Edison machine works for over a year. Impressed by Tesla’s ingenuity, Thomas Edison offered to pay a hefty bonus for improving the designs of his DC dynamos, but it turned out to be a joke. Later on, the two inventors would feud over whose electrical system would power the world.

A college dropout who set out to revolutionize how humans consumed electric power, Tesla teaches forgiving and focusing on one’s own work. Work talks. Tesla believed: “The present is theirs; the future, for which I really worked, is mine.” Today, the entire world runs on alternating current electrical systems.

Five Quotes By Steven Weinberg on Religion

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Steven Weinberg (1933–2021) was an American physicist who won the physics Nobel Prize in 1979 for his contribution to the unification of electromagnetism and weak force. This is similar to Maxwell unifying electricity and magnetism in the 19th century.

Weinberg was not only famous as a scientist but also for his writings and talks outside of science. He did important work in philosophy, politics and history. Weinberg gave the following four tips to students to succeed in the sciences:

1. You don't have to know everything
2. Specialize in a developing field
3. Don't be afraid to be wrong
4. Read more of science history


It is well known that Weinberg was an outspoken atheist and against organized religion. He once said: (1) With or without religion, you would have good people doing good things and evil people doing evil things. But for good people to do evil things, that takes religion.

In another interview, when asked whether he believed in God, Weinberg replied assertively: (2) If by God you mean a personality who is concerned about human beings, who did all this out of love for human beings, who watches us and who intervenes, then I would have to say in the first place how do you know, what makes you think so?

According to Weinberg: (3) One of the great achievements of science has been, if not to make it impossible for intelligent people to be religious, then at least to make it possible for them not to be religious. We should not retreat from this accomplishment.

German theoretical physicist Albert Einstein, an agnostic by belief, had once said: The most incomprehensible thing about the universe is that it is comprehensible. Meaning, one can study the universe and by doing so hope to understand its mysterious workings without having to rely on the supernatural.

Weinberg added to this adage, in one of his books, as he wrote: (4) The more the universe seems comprehensible, the more it also seems pointless. Weinberg meant, whatever the universe is about, it sure as heck isn’t about us, as claimed by religion.

Steven Weinberg had also warned that the world needs to wake up from its long nightmare of religious belief. He said: (5) Anything that we scientists can do to weaken the hold of religion should be done, and may in fact be our greatest contribution to civilization.

Weinberg enjoyed an illustrious career from Cornell to Princeton and from Berkeley and Harvard to MIT where he thought of the Nobel worthy idea to unify fundamental forces of nature. He never retired and continued teaching physics and astronomy until his death

Five Quotes By Richard Feynman On Politics

richard feynman political views

Nobel Prize winning American physicist Richard Feynman, known for pioneering the field of quantum electrodynamics, was more famous for his outspokenness. "I learned from my father: have no respect whatsoever for authority," Feynman once said.

Richard never showed admiration for any politician. Given how individualistic and anti-authoritarian Feynman was, if forced to run for President, it would probably be as an independent. Following are Feynman's views on politics.


Governance:


In 1963, Feynman stated during a lecture: I believe in limited government. I believe that government should be limited in many ways, and what I am going to emphasize is only an intellectual thing.

No government has the right to decide on the truth of scientific principles, nor to prescribe in any way the character of the questions investigated.

Feynman added: Neither may a government determine the aesthetic value of artistic creations, nor limit the forms of literary or artistic expression.

According to Richard Feynman, it is the duty of a government to its citizens to maintain the freedom, to let those citizens contribute to the further adventure and development of the human race.

Patriotism:


Feynman played a crucial role on the Rogers Commission, which investigated the 1986 Challenger disaster. He was dying of cancer at the time, but felt it was necessary to use his last productive days on the government project.

Feynman wrote in his report: NASA owes it to the citizens from whom it asks support to be frank, honest, and informative. For a successful technology, reality must take precedence over public relations, for nature cannot be fooled.

Democracy:


Feynman believed democracy to be a scientific type of government. Only in this system, Feynman declared, new ideas can be developed, tried out and tossed away if necessary, with more ideas brought in  — a trial and error system.

Feynman said: Democracy was a result of the fact that science was already showing itself to be a successful venture at the end of the eighteenth century. It was clear to people even then that doubt and discussion were essential to progress.

Deficit:


Feynman joked in 1987: There are 10^11 stars in the galaxy. That used to be a huge number. But it is only a hundred billion. It is less than the national deficit! We used to call them astronomical numbers. Now we should call them economical numbers.

Elections:


Feynman demonstrated why a scientist can never become the president. Suppose two politicians are running for president, and one goes through the farm section and is asked, "What are you going to do about the farm question?" And he knows right away — bang, bang, bang.

The second campaigner goes: "I don't know anything about farming. But it seems to me it must be a very difficult problem, because for twelve, fifteen, twenty years people have been struggling with it. And it must be a hard problem...

…So the way I intend to solve the farm problem is to gather around me a lot of people who know something about it, to look at all the experience that we have had with this problem before, to take a certain amount of time at it, and then to come to some conclusion in a reasonable way about it."

According to Feynman, the second candidate would not get anywhere in America. This is in the attitude of mind of the populace, that they have to have an answer and that a man who gives an answer is better than a man who gives no answer, when in most cases, it is the other way around.

Because there is lack of respect for people who are trying to solve problems, such a candidate can get to nowhere. Whereas, the politician can make tall claims and promises and fool people time and time again. The attitude of the populace is to blame, says Feynman.

Summing up:


Richard Feynman favored democratically elected government and likened it to the scientific method. He envisions a system in which doubt and discussion are not frowned upon. As an independent thinker Feynman is against all kinds of authority — religious, political or scientific.

Why Richard Feynman was an avowed atheist

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Richard Feynman was a Nobel Prize winning American physicist who made fundamental contributions to quantum electrodynamics, a theory which explains the interaction between light and matter.

Feynman was more famous as a beloved teacher whose lectures helped a many graduate and undergraduate students discover their love for physics.

Throughout his life, Feynman was openly against the dogmas of faith. Richard asked difficult and sometimes provocative questions in the search of truth. Once Feynman was interrogated if he preferred being called an agnostic instead?


Feynman replied candidly: Agnostic for me would be trying to weasel out and sound a little nicer than I am about this. I call myself an atheist.

Despite being an atheist, Feynman would use the following analogy: One way to understand physics is to think that the gods are playing a great game, let's say a chess game, while we observe from the sidelines.

We do not know what the rules are of the game. But if we watch long enough, we may eventually catch on to a few of the rules. The rules are what we mean by fundamental physics.

Richard Feynman (1918-1988) was born to Lucille Feynman, a homemaker and Melville Feynman, a uniform sales manager. Feynman's parents were both from Jewish families but not religious in the slightest. By youth, Feynman described religion as a culture of faith and science as a culture of doubt. The two were incompatible.


In 1959, Feynman explained why he was an atheist. He said:

It doesn't seem to me that this fantastically marvelous universe, this tremendous range of time and space and different kinds of animals, and all the different planets, and all these atoms with all their motions, and so on, all this complicated thing can merely be a stage...

...so that God can watch human beings struggle for good and evil — which is the view that religion has. The stage is too big for the drama.

Feynman always looked forward to science and religion dialogues. He was all for advocating an atheistic worldview. Following is an excerpt from 1964 lecture at Galileo symposium in Italy:

"The remark which I (Feynman) read somewhere, that science is all right as long as it doesn't attack religion. As long as it doesn't attack religion it need not be paid attention to and nobody has to learn anything. So it can be cut off from society except for its applications, and thus be isolated."


People love science for its results. While ignoring the process of careful reasoning, persistent questioning and investigating. The lack of courage and curiosity create a people who have no reason to want to know. To this, Feynman adds: I suggest, maybe correctly and perhaps wrongly, that we (scientists) are too polite.

Some people wrongly say, according to Feynman, that the laws of physics are God-like. God is always invented to explain those things that you do not understand. When you finally discover how something works, you get some laws which you're taking away from God and you don't need him anymore.

But you need God for the other mysteries, the question of life and death, for instance. God is associated with those things that you do not yet understand. Therefore I (Feynman) don't think that the laws can be considered to be like God because they have been figured out.

If the path of science is that of doubt, uncertainty and not knowing, how can one be clear of one's purpose in life?

Feynman says: Fall in love with some activity, and do it! Nobody ever figures out what life is all about and it doesn't matter. Explore the world. Nearly everything is really interesting if you go into it deeply enough.

There are many things I (Feynman) don't know anything about, such as whether it means anything to ask "Why are we here?" I might think about it a little bit, and if I can't figure it out then I go on to something else.

But I don't feel frightened by not knowing things, by being lost in the mysterious universe without having any purpose — which is the way it really is, as far as I can tell. Possibly. It doesn't frighten me. Thus, Richard Feynman was a lifelong atheist.

10 Inspiring Quotes From Richard Feynman's Letters

quotes by richard feynman letters

Richard Feynman was a Nobel Prize winning American physicist whose letters have grabbed the attention of media far and wide. They included jokes, anecdotes, puzzles and news for his parents while he worked at institutions across America.

The following 10 quotes by Richard Feynman are extracted from the book titled, Don't you have time to think? edited by his daughter Michelle Feynman. The book, published in April 2005, is a unique collection of Feynman's letters.

1) Letter to mom Lucille Feynman, Oct 1939: Professor Wheeler was called away suddenly last night so I took over his course in mechanics for the day. I spent all last night preparing. It went very nicely and smoothly. It was a good experience - I guess someday I will do a lot of that.

Physicist John Wheeler was Feynman's doctoral advisor. This was probably Feynman's first lecture he gave in the absence of Prof Wheeler, as mentioned. He seems to have enjoyed teaching and wanted to share that feeling with his mother.

2) Tell pop I have made out a time schedule so as to efficiently distribute my time and will follow it quite closely. There are many hours when I haven't marked down just what to do but I do what I feel is most necessary then or what I am most interested in.

quotes by richard feynman letters

Like most students Feynman also struggled to manage time. At the time this was written Feynman was quite early in his twenties. As suggested by his father, Feynman made a time table to achieve maximum level of productivity in a day.

3) 1940: I am listening to a course in physiology, study of life processes, in the biology dept. It is a graduate course. I don't know at all as much as the 3 other fellows in the class but I can understand and follow everything easily.

Just like this, Feynman was led to new adventures in life by his curiosity. In a 1979 interview given to Omni magazine Feynman said: I don't know anything, but I do know that everything is interesting if you go into it deeply enough.

4) Letter to Arline, the love of his life, year 1945: I feel I am a reservoir for your strength. Without you, I would be empty and weak, like I was before I knew you... but your moments of strength make me strong and thus I am able to comfort you with your own strength when you are down.

5) Study hard what interests you the most in the most undisciplined, irreverent and original manner possible. Letter to J. M. Szabados (November 1965)

6) Letter to Koichi Mano, February 1966: You say you are a nameless man. You are not to your wife and to your child. You will not long remain so to your immediate colleagues if you can answer their simple questions when they come into your office.

You are not nameless to me. Do not remain nameless to yourself — it is too sad a way to be. Know your place in the world and evaluate yourself fairly, not in terms of the na├»ve ideals of your own youth, nor in terms of what you erroneously imagine your teacher's ideals are.

7) Do not read so much, look about you and think of what you see there. Letter to Ashok Arora, January 1967.

8) The real question of government versus private enterprise is argued on too philosophical and abstract a basis. Theoretically, planning may be good. But nobody has ever figured out the cause of government stupidity — and until they do (and find the cure), all ideal plans will fall into quicksand. 1963 letter to his wife, Gweneth.

9) Tell your son to stop trying to fill your head with science — for to fill your heart with love is enough! Note to the mother of Marcus Chown.

10) Last letter to Arline, written in 1946, after her untimely death due to prolonged tuberculosis: I adore you sweetheart. I find it hard to understand in my mind what it means to love you after you are dead. But I still want to comfort and take care of you — and I want you to love me and care for me.

I want to have problems to discuss with you — I want to do little projects with you. My darling wife, I do adore you. You, dead, are so much better than anyone else alive. I love my wife. My wife is dead. PS: Please excuse my not mailing this but I don't know your new address.

5 Women Who Deserved To Win Nobel Prize In Physics

women who deserved to win nobel prize in physics

The Nobel Prize can be as controversial as it is prestigious. There is a long history of women going unrecognized, especially in the field of physics. Many female scientists have made ground-breaking contributions that should have won them a Nobel Prize, but they never became laureates.

Since 1901, of the 219 Nobel Prize winners in physics, only 4 were women. The following is a list of at least five more women who deserved to win the Nobel Prize but did not receive the top honor. Instead, the prize was either awarded to their male colleagues, advisor or not considered at all.

Chien-Shiung Wu


Chinese-American experimental physicist is best known for conducting what is called the Wu experiment. She showed that parity, which is conserved for electromagnetic and strong forces, is not conserved for weak force.

The violation of parity meant that if there was a mirror version of the real world then it would be possible to distinguish between the two. Before the Wu experiment, it was assumed by physicists that parity was always conserved.

Her male colleagues Tsung-Dao Lee and Chen-Ning Yang received the 1957 Nobel Prize in physics for the idea, whereas Wu's contribution in the discovery only got a mention in the Nobel Prize acceptance speech.

Jocelyn Bell Burnell


Astrophysicist from Northern Ireland picked up an interesting signal as a research student that turned out to be the first rotating neutron star, Pulsar, ever known. The discovery was recognized by the award of 1974 Nobel Prize in physics. However, Bell was excluded from the recipients.

Astronomers Martin Ryle and Anthony Hewish (doctoral advisor of Bell) won the Nobel Prize which was the first physics award given in recognition of astronomical research. Fellow astronomer Fred Hoyle strongly objected to Bell's omission, but to no avail.

Emmy Noether


German mathematician Amalie Emmy Noether made extraordinary contributions to both physics and mathematics. In physics, among many discoveries, Noether's theorem is the most famous that explains the relation between conservation laws and symmetry.

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Her expertise in mathematics was sought after by famous mathematicians such as David Hilbert to understand the theory of general relativity. Albert Einstein described Noether as the most important woman in the history of mathematics.

Unfortunately, the scope of Noether's exceptional work in physics was not recognized during her lifetime. She died in 1935 at the relatively young age of 53 which is probably one of the reasons why she never won a Nobel Prize.

Lise Meitner


Austrian-Swedish physicist Lise Meitner was among the first to discover nuclear fission. In nuclear fission, atoms are split apart, which releases zero-emission clean energy, as the total mass of the resultant particles is less than that of the initial reactants.

Nobel committee for chemistry decided that German chemist Otto Hahn should be the sole winner of the Nobel Prize in chemistry for his role in understanding fission. The committee members failed to understand why the physics community regarded Meitner's work as seminal.

Lise Meitner spent most of her scientific career in Germany. She was the first woman to become a full professor of physics in Germany. Albert Einstein nicknamed her as the German Marie Curie when she discovered the radioactive element Protactinium.


Vera Rubin


American astronomer discovered a discrepancy in the predicted and observed angular momentum of galaxies which was the first evidence for the existence of dark matter, which makes 27% of the universe. In fact, the matter we know of makes only 5% of the universe.

In 1970s, with her long time collaborator Kent Ford, Vera Rubin found that there was more gravitation in individual galaxies than normal matter could account for. They showed that there must be at least six times more dark matter than visible mass, which is an accepted fact today.

Dark matter research gained momentum after their discovery but neither Ford nor Rubin won the Nobel Prize. Rubin fought hard to gain credibility in a traditionally male-dominated field of astronomy. Rubin died in 2016 after waiting over 40 years for a Nobel Prize recognition.

5 Nikola Tesla Quotes For Making A Better World

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Nikola Tesla was a Serbian inventor and engineer who is best known for his contribution to the development of alternating current system and his feud with American inventor Thomas Edison over whose electricity supply method would power the world.

Tesla was also a deeply spiritual and a forward thinking man of culture. He consumed Mark Twain's works early on in life and was highly influenced by eastern philosophies in the latter part of his life. In this post, let us take a look at 5 of Tesla's famous ideas that may change the world.

Enjoy solitude

For much of his life, Nikola Tesla was lonely and he was never married. Some of Tesla's best work came out of solitude and he acknowledged this, saying: The mind is sharper and keener in seclusion. No big laboratory is needed in which to think. Originality thrives in solitude free of outside influences beating upon us to cripple the creative mind. Be alone, that is the secret of invention; be alone, that is when ideas are born.

Think reasonably

Nikola Tesla was born and raised in an orthodox Christian family. Later in life he did not consider himself to be a believer in the orthodox sense. Tesla said: To me, the universe is simply a great machine which never came into being and never will end. The human being is no exception to the natural order. Man, like the universe, is a machine.

Tesla favored rationality and always opposed religious fanatism. He believed: Nothing enters our minds or determines our actions, and what we call soul or spirit, is nothing more than the sum of the functionings of the body. When this functioning ceases, the soul or the spirit also ceases.

Preach equality

Nikola Tesla advocated strongly for women to pursue scientific endeavors. Women will startle civilization with their progress, Tesla predicted. He said in an interview: The female mind has demonstrated a capacity for all the mental acquirements and achievements of men, and as generations ensue that capacity will be expanded. The average woman will be as well educated as the average man, and then better educated, for the dormant faculties of her brain will be stimulated to an activity that will be all the more intense and powerful because of centuries of repose.

Future of energy

Nikola Tesla was a visionary who endorsed renewable energy sources like solar, wind and water. Of the three, Tesla was most in favor of sun's practically infinite untapped energy. He said: The sun's rays beat the earth incessantly and supply energy at a maximum rate of over four million horsepower per square mile. The average energy received per square mile in any locality during the year is only a small fraction of that amount, yet an inexhaustible source of power would be opened up by the discovery of some efficient method of utilizing the energy of the rays.

To achieve peace

Nikola Tesla realized much later in his life that the fights between individuals, or even among governments and nations, result from misunderstandings, that are always caused by the inability of appreciating one another's point of view.

Tesla's way of accomplishing peace is simply, understanding and acknowledging the differences. To resist our inherent fighting tendency, the best way is to dispel ignorance of the doings of others. The most important step is to aid exchange of thought and ideas.

4 Father-Son Nobel Prize Winners In Physics

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Fathers are often the role model for their children. Richard Feynman's father taught him how to think, not what to think. Aage Bohr grew up working with his father Niels Bohr at the University of Copenhagen. Did you know that seven father-child pairs have been awarded a Nobel Prize? Of these, four pairs won the Nobel Prize in physics.


JJ Thomson and George Thomson


Sir Joseph John Thomson won the Nobel Prize in physics in 1906 for the discovery of electron, the first subatomic particle to be found. Thomson was also a great teacher, and nine of his students went on to win Nobel Prizes, including his son George.

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Working with Cathode rays

Contradicting his father, George Paget Thomson won the Nobel Prize in physics in 1937 for the discovery of wave properties of electron. He showed by scattering electrons through thin Gold films that electron diffracted as if it were a wave. With his discovery, George confirmed Louis de Broglie's theory.

Niels Bohr and Aage Bohr


Aage Bohr grew up surrounded by physicists including Heisenberg, Pauli and Kramers. After graduation, he served as a personal assistant to his Nobel Prize winning father who was one of the founders of quantum mechanics, Niels Bohr, best known for explaining the structure of Hydrogen atom.


At that time, the known properties of atomic nuclei could not be explained by the existing nuclear models. Aage studied this problem in the late 1940s and solved in 1952. He gave a new theory to describe asymmetrical shapes of certain nuclei, what the shell model and liquid drop model could not account for.

Aage Bohr shared the Nobel Prize with physicists Ben Mottelson and James Rainwater in 1975 for their explanation of the non-spherical geometry of atomic nuclei and its experimental verification.

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William Bragg and Lawrence Bragg


Lawrence Bragg was born in Australia and graduated from the University of Adelaide at age 18. He soon was offered a scholarship in mathematics by the University of Cambridge while his father William Henry Bragg secured a prestigious Cavendish chair of physics at the University of Leeds.

The family moved to Britain and the father and son duo studied the structure of minerals by means of X-rays. They shared the Nobel Prize in physics in 1915 for their services in the X-ray crystallography research. A sulfide mineral is named "Braggite" in their honor.

Manne Siegbahn and Kai Siegbahn


While Niels Bohr was among the first to gain theoretical understanding of atom's internal structure, Manne Siebahn was an experimental physicist who understood electron shell system experimentally by means of x-ray spectroscopy.

Manne won the Nobel Prize in 1924 for his precision measurements that drove many developments in quantum theory and atomic physics. His son Kai also won the Nobel Prize in physics in 1981 for the development of electron spectroscopy.

Other Father Child Nobel winners


1. Pierre Curie won the Nobel Prize in physics in 1903 with his wife Marie Curie for their extraordinary contribution to the understanding of radioactivity. Their daughter Irene won the Nobel Prize in chemistry in 1935 for pioneering work in artificial radioactivity.

Pierre Curie father's day 2022 irene curie marie curie mother's day physics nobel prize

2. Arthur Kornberg won the Nobel Prize in medicine in 1959 for his studies on the synthesis of DNA. His son Roger Kornberg won in chemistry in 2006 for explaining how information is copied from DNA to RNA.

3. Hans von Euler won the Nobel Prize in chemistry in 1929 for research in organic chemistry. His son Ulf von Euler won the Nobel Prize in medicine in 1970 for his work on neurotransmitters. They are distantly related to mathematician Leonhard Euler.
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