In these trying times, when we all feel like screaming, I present to you the best explanation of the Cosmic Microwave Background #CMB I've ever come across: "The Surface of Last Screaming" #Science #Physics #Cosmology #Astronomy 🧪⚛️🔭 Source: https://ned.ipac.caltech.edu/level5/March03/Lineweaver/Lineweaver7_2.html
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Figure 9. The Surface of Last Screaming.
Consider an infinite field full of people screaming.
The circles are their heads.
You are screaming too. (Your head is the black dot.)
Now suppose everyone stops screaming at the same time.
What will you hear?
Sound travels at 330 […]