Whether in the intellectual pursuits of science or in the mystical pursuits of the spirit, the light beckons ahead, and the purpose surging in our nature responds.
Arthur EddingtonRead
So far as physics is concerned, time's arrow is a property of entropy alone.
Interpretation
Time is linked to the increase of disorder in the universe, represented by entropy.
In this quote, Arthur Eddington emphasizes the relationship between time and the concept of entropy in physics. He suggests that the forward direction of time, often referred to as 'time's arrow', is fundamentally tied to the irreversible process of increasing disorder within closed systems, illustrating how physical laws govern our perception of time's progression.
In practice
This quote could be used in a lecture on thermodynamics to illustrate the second law of thermodynamics.
Whether in the intellectual pursuits of science or in the mystical pursuits of the spirit, the light beckons ahead, and the purpose surging in our nature responds.
The physical world is entirely abstract and without actuality apart from its linkage to consciousness.
It is one thing for the human mind to extract from the phenomena of nature the laws which it has itself put into them; it may be a far harder thing to extract laws over which it has no control. It is even possible that laws which have not their origin in the mind may be irrational, and we can never succeed in formulating them.
Whatever else there may be in our nature, responsibility toward truth is one of its attributes.
In the world of physics we watch a shadowgraph performance of the drama of familiar life. The shadow of my elbow rests on the shadow table as the shadow ink flows over the shadow paper. It is all symbolic, and as a symbol the physicist leaves it. ... The frank realisation that physical science is concerned with a world of shadows is one of the most significant of recent advances.
A star is drawing on some vast reservoir of energy by means unknown to us. This reservoir can scarcely be other than the subatomic energy which, it is known exists abundantly in all matter; we sometimes dream that man will one day learn how to release it and use it for his service. The store is well nigh inexhaustible, if only it could be tapped. There is sufficient in the Sun to maintain its output of heat for 15 billion years.
And now the announcement of Watson and Crick about DNA. This is for me the real proof of the existence of God.
Hereafter we shall be compelled to acknowledge that the only distinction between species and well-marked varieties is, that the latter are known, or believed to be connected at the present day by intermediate gradations whereas species were formerly thus connected.
It was our use of probability theory as logic that has enabled us to do so easily what was impossible for those who thought of probability as a physical phenomenon associated with "randomness". Quite the opposite; we have thought of probability distributions as carriers of information.
Some of the hydrogen in your body comes from the Big Bang, and when you see a kid walking down the street with a helium balloon, you can say, 'There goes some of the primordial universe.'
It is astonishing that human brains, which evolved to cope with the everyday world, have been able to grasp the counterintuitive mysteries of the cosmos and the quantum.
It is my supposition that the Universe in not only queerer than we imagine, is queerer than we can imagine.
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