Question

In: Physics

Why did Fred Hoyle propose the Steady State Theory?

Why did Fred Hoyle propose the Steady State Theory?

Solutions

Expert Solution

Steady-state theory, in cosmology, a view that the universe is always expanding but maintaining a constant average density, with matter being continuously created to form new stars and galaxies at the same rate that old ones become unobservable as a consequence of their increasing distance and velocity of recession. A steady-state universe has no beginning or end in time, and from any point within it the view on the grand scale—i.e., the average density and arrangement of galaxies—is the same. Galaxies of all possible ages are intermingled.

The theory was first put forward in 1948 by British scientists Sir Hermann Bondi, Thomas Gold, and Sir Fred Hoyle. It was further developed by Hoyle to deal with problems that had arisen in connection with the alternative big-bang hypothesis. Observations since the 1950s (most notably, those of the cosmic microwave background) have produced much evidence contradictory to the steady-state picture and have led scientists to overwhelmingly support the big-bang model.


Related Solutions

A) Explain why the steady state growth rate is independent of the savings rate in the...
A) Explain why the steady state growth rate is independent of the savings rate in the Solow growth model? B) Suppose two economies A and B exhibit the same exogenous growth rate of the labour force. There is no technical progress and the savings propensities are the same in both economies. The initial capital stock in country A is much larger than that of country B. Compare the transitional dynamics and the steady state growth paths of the two economies.
Explain the theory behind a steady state continuous stirred-tank reactor (aka CSTR) and as well an...
Explain the theory behind a steady state continuous stirred-tank reactor (aka CSTR) and as well an unsteady state CSTR.
What is steady-state error? What is the type of the system? What is the steady-state error...
What is steady-state error? What is the type of the system? What is the steady-state error of type 0, type 1, and type 2 systems for step signal, ramp signal, and parabolic signal, respectively?
6. [4pt] Another explanation for the Universe it the Steady State Hypothesis. The Steady State Hypothesis...
6. [4pt] Another explanation for the Universe it the Steady State Hypothesis. The Steady State Hypothesis says that the Universe has always existed and is infinite in extent. Which of the following support the Big Bang Theory and which support the Steady State Model. (Select B-Big Bang Theory, S-Steady State Model, If the first is B and the rest S, enter BSSSSS).   A) The measurement of the microwave background radiation. B) A measurement that shows the density of the Universe...
What is steady state exercise?
What is steady state exercise?
(e) In the steady state and above threshold, why will the gain and carrier density inside...
(e) In the steady state and above threshold, why will the gain and carrier density inside a semiconductor laser be clamped (limited)to the threshold condition? How about photon density inside the cavity? If the driving current is time varying form, are gain and carrier density still kept in constant values? How about in AC driving conditions?
Why did you choose the theory you did and how can it be used to guide...
Why did you choose the theory you did and how can it be used to guide your decision?Which of the five principles is the most widely used and accepted in the current US healthcare system and why? Which principle is the most ignored principle and why?
1. Why is the steady state concentration gradient linear in equimolecular counter diffusion? 2. Explain why...
1. Why is the steady state concentration gradient linear in equimolecular counter diffusion? 2. Explain why the dissolution of a crystalline particle in a solution can be speeded up by (a) stirring the solution and (b) by crushing the particle, from a mass transfer perspective.
What is meant by the term steady state?
What is meant by the term steady state?
3)   In enzyme kinetics why does the initial reaction rate (vo) resemble the steady state in...
3)   In enzyme kinetics why does the initial reaction rate (vo) resemble the steady state in living cells?   4)   Also, in enzyme kinetics the Km value is an indicator of enzyme binding efficiency, is a low or high Km value indicative of better efficiency in living cells? Why? 5)   Consider competitive inhibitors. Why does their presence raise the Km value?
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT