Quotes About Theory

complete, consistent, unified theory is only the first step: our goal is a complete understanding of the events around us, and of our own existence

This is known as the twins paradox, but it is a paradox only if one has the idea of absolute time at the back of one's mind. In the theory of relativity there is no unique absolute time, but instead each individual has his own personal measure of time that depends on where he is and how he is moving.

Newton realized that, according to his theory of gravity, the stars should attract each other

philosopher of science Karl Popper has emphasized, a good theory is characterized by the fact that it makes a number of predictions that could in principle be disproved or falsified by observation. Each time new experiments are observed to agree with the predictions, the theory survives and our confidence in it is increased; but if ever a new observation is found to disagree, we have to abandon or modify the theory.

time is not completely separate from and independent of space, but is combined with it to form an object called space-time.

Segundo algumas teorias, o universo que vivenciamos é apenas uma superfície quadridimensional em um espaço com dez ou onze dimensões. O filme Interestelar dá uma ideia de como isso funcionaria. Nós não veríamos essas dimensões extras porque a luz não se propagaria por elas, mas apenas pelas quatro dimensões do nosso universo.

As philosopher of science Karl Popper has emphasized, a good theory is characterized by the fact that it makes a number of predictions that could in principle be disproved or falsified by observation. Each time new experiments are observed to agree with the predictions, the theory survives and our confidence in it is increased; but if ever a new observation is found to disagree, we have to abandon or modify the theory.

No entanto, a da tartaruga não é uma boa teoria científica porque prevê que as pessoas devem ser capazes de cair pela beirada do mundo. A experiência mostra que as coisas não são assim, a menos que venhamos a descobrir que essa é a explicação para as pessoas que supostamente desapareceram no Triângulo das Bermudas!

Yet if there really is a complete unified theory, it would also presumably determine our actions. And so the theory itself would determine the outcome of our search for it! And

if you believe that the universe is not arbitrary, but is governed by definite laws, you ultimately have to combine the partial theories into a complete unified theory that will describe everything in the universe.

There is a good chance that the study of the early universe and the requirements of mathematical consistency will lead us to a complete unified theory within the lifetime of some of us who are around today, always presuming we don't blow ourselves up first!

DüÅŸük h?z? ve zay?f kuvveti ilgilendiren durumlarda zaman? ve uzay? ayr? ayr? ele alabiliriz. Oysa, genelde zaman ve uzay birbirine geçmiÅŸtir ve bunlar?n geniÅŸlemesi veya s?k??mas? belli oranda birbirine kar??may? içerir.

If you fall towards a black hole feet first, gravity will pull harder on your feet than your head, because they are nearer the black hole. The result is that you will be stretched out lengthwise, and squashed in sideways.

Teori hanya ada dalam akal budi kita dan tak punya realitas lain.

Tiap kali percobaan baru memberi hasil yang cocok dengan prediksi, teori harus bertahan, dan keyakinan kita terhadapnya meningkat; tapi jika ada pengamatan baru yang didapati tak cocok, kita harus tinggalkan atau ubah teori itu.

Stephen Hawking

Tujuan akhir sains adalah menyediakan satu teori yang menjabarkan seluruh alam semesta.

Stephen Hawking

information paradox

Las teorías cuánticas han resultado ser notablemente precisas en la predicción de acontecimientos a dichas escalas, y también reproducen las predicciones de las viejas teorías clásicas cuando son aplicadas al mundo macroscópico de la vida corriente.

any normal object is forever confined by relativity to move at speeds slower than the speed of light. Only light, or other waves that have no intrinsic mass, can move at the speed of light.

but also that it is possible that nothing caused the Big Bang. Nothing.

Cada vez que observamos novos experimentos coincidirem com as previsões, a teoria sobrevive e nossa confiança nela aumenta; porém, se em algum momento uma nova observação a contradiz, temos de abandonar a teoria ou modificá-la. Pelo

Any physical theory is always provisional, in the sense that it is only a hypothesis: you can never prove it.