What is the proper distance to the surface of last scattering? What is the luminosity distance...

What is the proper distance to the surface of last scattering? What is the luminosity distance to the surface of last scattering? Assume that the Benchmark Model is correct, and that the redshift of the last scattering surface is z = 1090.

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genius_generous answered 3 years ago

Explain the concepts of “luminosity distance” and “proper distance”, and how they are different. How does...

Explain the concepts of “luminosity distance” and “proper distance”, and how they are different. How does the observed bolometric flux, f, from a distant source with luminosity, L, depend on redshift, z? What factor(s) cause(s) this redshift dependence? Describe the properties of a universe where the luminosity distance would be identical to the proper distance.

a) Describe what is meant by the term the “last scattering surface”? b) Describe the difference...

a) Describe what is meant by the term the “last scattering surface”? b) Describe the difference between the term dipole anisotropy and intrinsic anisotropy of the cosmic background radiation. c) What is meant by the term “horizon problem”? d) How has modern cosmology been able to resolve the horizon problem?

what is quantum scattering?

Explain (a) the surface plasmon polariton, (b) localized surface plasmon (LSP), and (c) how to apply the LSP to realize the surface‐enhanced Raman scattering spectroscopy (SERS).

Explain (a) the surface plasmon polariton, (b) localized surface plasmon (LSP), and (c)how to apply the LSP to realize the surface‐enhanced Raman scattering spectroscopy(SERS). Please describe the working principle of SERS and the argument whether SERScan be applied to detect single molecule.

What is compton scattering and why is it important? How can compton scattering be applied to...

What is compton scattering and why is it important? How can compton scattering be applied to an innovation in the future?

When an object is placed at the proper distance to the left of a converging lens,...

When an object is placed at the proper distance to the left of a converging lens, the image is focused on a screen 31.0 cmto the right of the lens. A diverging lens is now placed 14.2 cm to the right of the converging lens, and it is found that the screen must be moved 19.5 cm farther to the right to obtain a sharp image. What is the focal length of the diverging lens? ......... cm

*Bragg Scattering What is the Bragg Scattering angle (i.e. the angle, in degrees, between the incoming...

*Bragg Scattering What is the Bragg Scattering angle (i.e. the angle, in degrees, between the incoming incident beam and the reflected beam) for electrons scattered from a nickel crystal if their energy is 63 eV? The spacing between Ni Bragg planes is 0.215 nm. Give your result to 3 significant figures.

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What is the proper distance to the surface of last scattering? What is the luminosity distance...

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