Which phenomenon defines the operation of a gravitational lens?

💡 Explanation

Spacetime curvature near massive objects creates a gravitational lens, because significant mass warps spacetime. Thus photons follow the curved path. Refraction adjusts wavelengths with a medium, rather than spacetime geometry; quantum entanglement is unrelated.

• Which consequence results when thermal expansion overwhelms tolerances in a piston engine?
• Which mechanism limits signal propagation in high-speed digital circuits at increased frequencies?
• Which mechanism hinders complete electron delocalization in molecules with non-planar geometry?
• Which outcome results when insufficient reactant surface exposure limits a catalyzed chemical reaction?
• Which consequence results when paraffin wax cools non-uniformly?
• Which risk increases within a closed Rankine cycle if feedwater heater efficiency degrades?