video thumbnail 12:28
Do You Expand With The Universe?

2020-10-23

[public] 1.89M views, 137K likes, 1.38K dislikes audio only

channel thumbVeritasium
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As the universe expands, #expanding #space is said to "stretch" photons. But if it stretches photons, does it also stretch molecules, galaxies and you? A portion of this video was sponsored by Salesforce. Go to https://salesforce.com/veritasium to learn more.

Special thanks to Geraint Lewis - this video was based on his paper "On the relativity of redshifts"

https://arxiv.org/abs/1605.08634

Check out his YouTube channel: https://ve42.co/gfl and books: https://ve42.co/GFLbooks

References:

Expanding Space: the Root of all Evil?

Matthew J. Francis, Luke A. Barnes, J. Berian James, Geraint F. Lewis

https://arxiv.org/abs/0707.0380

Editing and VFX by Trenton Oliver

Thumbnail by Ignat Berbeci

Music from https://epidemicsound.com

#SMB #smallbiz #startups #SalesforceEssentials


Cosmological Redshift
/youtube/video/9DrBQg_n2Uo?t=43.98
Photon in a Gravitational Field
/youtube/video/9DrBQg_n2Uo?t=117.82
The Doppler Redshift
/youtube/video/9DrBQg_n2Uo?t=282.62
The Harvard Tower Experiment
/youtube/video/9DrBQg_n2Uo?t=314.62
Co-Moving Observers
/youtube/video/9DrBQg_n2Uo?t=442.94
Do You Expand with the Universe
/youtube/video/9DrBQg_n2Uo?t=598.38