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   Science is interesting.

Scientists are interesting people.   

Bohr & Einstein

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Niels Henrik David Bohr

7 October 1885 – 18 November 1962


Albert Einstein

14 March 1879 – 18 April 1955


Danish physicist who made fundamental contributions to understanding atomic structure and quantum mechanics, for which he received the Nobel Prize in Physics in 1922 (a year after Einstein).

1913 brought the Bohr model of the hydrogen atom which made use of the quantum to explain the atomic spectrum.

His theory is completed later than Schrodinger, established the first sound description of the behavior of electrons on atoms.

It is considered one of the creators of quantum physics credited with its definition and acceptance.

Einstein's works in the field of quantum theory got 1921st awarded the Nobel Prize.

Einstein was the first physicist to say that Planck's discovery of the quantum would require a rewriting of physics. As though to prove his point, in 1905 he proposed that light sometimes acts as a particle which he called a light quantum (now called the photon).
Quantum mechanics is introduced as an unavoidable element of unpredictability or randomness into science. Einstein is very opposed to this, despite the important role which  played in the development of this idea.

Bohr Einstein duel 

The Bohr–Einstein debates were a series of public disputes about quantum mechanics between Albert Einstein and Niels Bohr who were two of its founders. Their debates are remembered because of their importance to the philosophy of science.

An account of them has been written by Bohr in an article titled "Discussions with Einstein on Epistemological Problems in Atomic Physics".

Despite their differences of opinion regarding quantum mechanics, Bohr and Einstein had a mutual admiration that was to last the rest of their lives.

Einstein and  Bohr, always led by merciless war on the nature of quantum theory based on probability.

This anecdote, best describes their relationship:

Albert Einstein and Neils Bohr were out hiking one day when they came across a bear. Immediately, Borh began to change from his boots to his running shoes.
“What are doing Niels?” Exclaimed the surprised Einstein. “Certainly you cannot outrun a bear!”
To which Borh replied “No, Albert, I only need to outrun you...”

Those who accept Einstein settings, talking to Einstein's dressing running shoes. But modern science accepts that the Bor still ran faster.

Einstein and Bohr had been known as interesting interlocutors almost poets and artists are often short and sharp mind.
Some of their sentences have become famous.
Here are a few:


Every sentence I utter must be understood not as an affirmation, but as a question.

Some subjects are so serious that one can only joke about them.

Prediction is very difficult, especially if it's about the future.
How wonderful that we have met with a paradox. Now we have some hope of making progress.

Truth and clarity are complementary.

If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet.
Your theory is crazy, but it's not crazy enough to be true.
Einstein, stop telling God what to do!


Before God we are all equally wise - and equally foolish.

A man should look for what is, and not for what he thinks should be.

A person who never made a mistake never tried anything new.
All religions, arts and sciences are branches of the same tree.
In the past it never occurred to me that every casual remark of mine would be snatched up and recorded. Otherwise I would have crept further into my shell.

If we knew what it was we were doing, it would not be called research, would it?.

Do you believe in immortality? No, and one life is enough for me.

Disputes two great best illustrates the Schrödinger's cat paradox
Sred cat

Schrödinger's Cat: A cat, along with a flask containing a poison and a radioactive source, is placed in a sealed box shielded against environmentally induced quantum decoherence. If an internal Geiger counter detects radiation, the flask is shattered, releasing the poison that kills the cat.

The Copenhagen interpretation (Bohr followers) of quantum mechanics implies that after a while, the cat is simultaneously alive and dead. Yet, when we look in the box, we see the cat either alive or dead, not both alive and dead.

Einstein said that the cat or alive or dead.


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