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Can you give some examples of the fine tuning of the universe?
So, in fact, we wouldn't be living here at allwe wouldn't exist. Examples of such fine-tuning abound. Tweak the charge on an electron, for instance, or change the strength of the gravitational force or the strong nuclear force just a smidgen, and the universe would look very different, and likely be lifeless.
How is universe fine tuned?
The characterization of the universe as finely tuned suggests that the occurrence of life in the Universe is very sensitive to the values of certain fundamental physical constants and that the observed values are, for some reason, improbable.
What is fine tuning in philosophy?
The term fine-tuning is used to characterize sensitive dependences of facts or properties on the values of certain parameters. Technological devices are paradigmatic examples of fine-tuning.
What is fine tuning in physics?
In theoretical physics, fine-tuning is the process in which parameters of a model must be adjusted very precisely in order to fit with certain observations. The heuristic rule that parameters in a fundamental physical theory should not be too fine-tuned is called naturalness.
What is the anthropic universe theory?
Anthropic principle. The anthropic principle is a philosophical consideration that any data we collect about the universe is filtered by the fact that, in order for it to be observable in the first place, it must be compatible with the conscious and sapient life that observes it.
How many cosmological constants are there?
Image credit: Particle Data Group / LBL / DOE / NSF, of the Fundamental Constants as of 1986. As it turns out, it takes 26 dimensionless constants to describe the Universe as simply and completely as possible, which is quite a small number, but not necessarily as small as we like.
How many constants are there?
26 constants is not too many but most physicists would prefer to have none. The goal is to come up with a theory that lets you calculate all these constants, so they wouldn't be "fundamental" any more. However, right now this is merely a dream. So, what are the fundamental physical constants?
What is the cosmological constant equal to?
In cosmology, the cosmological constant (usually denoted by the Greek capital letter lambda: ) is the energy density of space, or vacuum energy, that arises in Albert Einstein's field equations of general relativity. It is closely associated to the concepts of dark energy and quintessence.
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