Is energy always conserved?
280816 Like and subscribe. This is an archive, check the link in the end if you are owner. This episode is brought to you by Squarespace: http://www.squarespace.com/physicsgirl
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?
Many thanks to Sean Carroll for his wonderful description of this question: http://www.preposterousuniverse.com/blog/2010/02/22/energy-is-not-conserved/
More resources:
http://motls.blogspot.com/2010/08/why-and-how-energy-is-not-conserved-in.html
http://hyperphysics.phy-astr.gsu.edu/hbase/astro/hubble.html
Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2
http://physicsgirl.org/
‪http://twitter.com/thephysicsgirl
‪http://facebook.com/thephysicsgirl
‪http://instagram.com/thephysicsgirl
http://physicsgirl.org/
Creator: Dianna Cowern
Editor: sefd.com , Jabril Ashe
Writer: Sophia Chen
Gravitational Wave Animations: LIGO
Visuals: Pixabay.com
Music: APM and YouTube
https://rumblevideoarchive.wordpress.com/
-
14:28
Physics Girl Archive Channel
1 year ago99 Years Later... We Solved It
87 -
1:13:17
Man in America
15 hours agoUnmasking How the Two-Party System ENSLAVES All of Us w/ Mel K
53.8K77 -
2:30:37
InfiniteWaters(DivingDeep)
19 hours ago‘That Was Shocking’: Ralph Smart Reacts To Biden’s Debate Performance
33.5K56 -
1:50:42
Twisted History
1 day agoIllegal Dumping
48.7K20 -
1:00:59
Kimberly Guilfoyle
3 days agoOn Their Records, It's No Debate: Trump & Biden Face off in Atlanta, Live with Jeffery Clark & Tim Murtaugh | Ep. 137
113K73 -
4:27:58
MissesMaam
8 hours agoEvil Achievement Grind | Stardew Valley 💚✨
43K5 -
51:36
Line Drive Podcast
8 hours agoEven after debate debacle, Dems say Biden is fine!
51.1K30 -
2:17:12
vivafrei
20 hours agoEp. 217: Biden Debate Debacle; SCOTUS Jan. 6; SCOTUS Chevron; Trump AND MORE!
180K602 -
2:00:31
RealAmericasVoice
9 hours agoNEXT MAN UP: STEVE BANNON, CHARLIE KIRK, AND JACK POSOBIEC
73K83 -
1:16:29
The Late Kick with Josh Pate
12 hours agoLate Kick Live Ep 526: FSU’s ACC Exit | SEC vs Texas & OU | Lanning Is Kirby | EASports CFB25
58.1K6