Radius of the Observable Universe in Light-years Is Greater than Its Age The radius of the observable universe is about 46 billion light-years, which is considerably greater than its age of about 14 billion years The radius of the observable universe is defined by the greatest distance from which light would have had time to reach us since the Big Bang, so you might think that it would lie at a distance of only 14 billion light-years, since x=ct for motion at a
Is the Universe Finite, or Is It Infinite? - Physics Forums The observable universe refers to the portion of the universe that we can see or detect, limited by the finite time light has traveled since the Big Bang It has a finite volume
Learn Observables in Mathematical Quantum Field Theory The following is one chapter in a series on Mathematical Quantum Field Theory The previous chapter is 6 Symmetries The next chapter is 8 Phase space 7 Observables In this chapter we discuss these topics: General observables Polynomial off-shell observables and Distributions Polynomial on-shell observables and Distributional solutions to PDEs Local observables and Transgression
Intro to the Big Bang and Infinity Concepts - Physics Forums In the cosmology section of the Physics Forums, I encountered many Big Bang and related infinity problems Hence, in this article, I want to explain the Big Bang, the topology of the Universe, and the concepts of singularities and infinities First, let’s start with the concept of the observable universe and what we mean by that The observable universe is the part of the Universe that we
Hermitian operator lt;= gt; observable? - Physics Forums 'Observable' is simply a name; it means that there is an hermitean operator with real eigenvalues which can in principle correspond to results of measurements If you don't like this wording then you may call it 'hermitean operator' in order to make clear that a constructive approach for the measureemnt itself is missing Killtech said:
How does the observable Universe have meaning? • Physics Forums The observable universe refers to the portion of the universe that can be seen from a specific location, such as Earth, and is defined by a radius of approximately 13 8 billion light years Observers in different locations, like other planets, would have their own observable universes, which may include regions beyond what is observable from Earth The concept raises questions about the
The observable and non-observable parts of the Universe Hi, I'm only trying to understand the basic concept Did the big bang give rise to both observable and non-observable universe? I have been through quite a few source and it seems like that the big bang was the cause of only observable universe and not of unobservable universe Below I have
QM: I as an Observable Its Eigenvectors Eigenvalue So, hermitian linear operators represent observables in QM I (a matrix whose elements are all 1) is certainly a hermitian linear operator Does this mean that I represent a measurable property? If so, what do we call that property? Identity? Moreover, for any state-vector A, A would be an
The Universe vs Observable Universe • Physics Forums The discussion clarifies the distinction between the observable universe and the entire universe, emphasizing that the observable universe is limited by the speed of light and the finite age of the universe The Big Bang, which occurred 13 8 billion years ago, did not originate from a single point in space, but rather, the universe has been expanding ever since, potentially being infinite from