Which mechanism explains redshift of distant galaxy light crossing voids?

💡 Explanation

The Integrated Sachs-Wolfe effect redshifts photons. Because as photons traverse gravitational potential wells (voids), the expansion of the universe causes the potential to change during transit; therefore the photon loses energy, rather than blue shifting as it exits.

• Which effect is reduced as gravitational spacetime curvature lessens?
• Which effect on atomic clock synchronicity causes gravitational redshift in varying spacetime?
• Which consequence results when high pressure narrows a silicate's *band gap*?
• Which outcome increases when a packed-bed chemical reactor temperature approaches adiabatic runaway?
• Which consequence results when dielectric breakdown in transmission lines?
• Which outcome reduces current flow when applying reverse bias?