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Atualizado em
17 out 2015
- Chinês Simples (China)
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Inglês (EUA)
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Inglês (RU)
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Francês (França)
Pergunta sobre Inglês (RU)
O que significa We know of no theory that both makes contact with the empirical world ?
O que significa We know of no theory that both makes contact with the empirical world ?
The advent of quantum mechanics changed everything. When quantum mechanics is combined with relativity, it turns out, rather unexpectedly in fact, that the detailed nature of the physical laws that govern matter and energy actually depend on the physical scale at which you measure them. This led to perhaps the biggest unsung scientific revolution in the 20th century: We know of no theory that both makes contact with the empirical world, and is absolutely and always true. (I don’t envisage this changing anytime soon, string theorists’ hopes notwithstanding.) Despite this, theoretical physicists have devoted considerable energy to chasing exactly this kind of theory. So, what is going on? Is a universal theory a legitimate goal, or will scientific truth always be scale-dependent?
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17 out 2015
Featured answer
- Inglês (RU)
You need the second part of the sentence as well. We know of no theory that "makes contact with the empirical world", AND "is absolutely and always true." The both emphasises the "AND".
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