Get Free Access for 10 Days!
Instructional Video

Physics Girl: Is Energy Always Conserved?

Curated by ACT

When light passes through the universe and is redshifted by the expansion of space itself, how is energy conserved? The stretched light has a longer wavelength and therefore a lower energy. Is energy conserved? If so, where does it go? [6:04]

3 Views 0 Downloads
Additional Tags
conservation of energy, expansion of the universe, law of conservation of energy, red shift, space science, edwin hubble, ohio p.w.1.a, physics girl, physics girl: is energy always conserved?, physics girl: is energy always conserved?/ohio p.w.1.a, planck's constant, cosmological redshift, universe
Show More Show Less
Classroom Considerations
  • This video is hosted on YouTube