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  1. Radius of the Observable Universe in Light-years Is Greater than Its Age

    Dec 13, 2015 · 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 …

  2. Estimates — True Size of the Universe? • Physics Forums

    Mar 19, 2025 · All we know is that the universe is significantly larger than the observable universe. I think current measurements estimate the size of the whole universe to be at least 100 times the …

  3. The observable and non-observable parts of the Universe

    Dec 29, 2019 · The observable universe, however, was smaller because there's a finite amount of stuff in it, and it was closer together. Also, the observable universe is defined as the volume we can see, …

  4. States & Observables: Are They Really Different? - Physics Forums

    May 13, 2023 · Usually states and observables are treated as fundamentally different entities in quantum theory. But are they really different? Yes, they are different. There are basic observables …

  5. Learn Observables in Mathematical Quantum Field Theory

    Nov 19, 2017 · 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 …

  6. The Universe vs Observable Universe - Physics Forums

    Jan 28, 2018 · 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 cosmic inflation.

  7. Why is it giving me different observable canonical form?

    Mar 4, 2021 · The forum discussion centers on discrepancies in the observable canonical form generated by MATLAB's canon (G, 'companion') function compared to manual calculations. Users …

  8. Is the Universe Finite, or Is It Infinite? - Physics Forums

    Mar 16, 2024 · 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.

  9. Spin 1/2 System: Eigenstates of Sz and Probability of Measurement

    Feb 18, 2014 · The distinction between expected values and probabilities is clarified, emphasizing that the expected value of an observable does not equate to the probability of measurement. …

  10. What Is Beyond The Observable Universe? - Physics Forums

    Mar 8, 2006 · The discussion centers on the nature of the universe beyond the observable limits, with participants debating whether it is simply black space or if other universes exist. Key points include …