মডেল:হমিলদুৱার পদার্থবিজ্ঞান/বাছিসি ছবিগFrom Wikipedia, the free encyclopedia The gravitational redshift of a light wave as it moves upwards against a gravitational field (produced by the yellow star below).
The gravitational redshift of a light wave as it moves upwards against a gravitational field (produced by the yellow star below).