March 11th, 2018, 06:46 PM  #1 
Newbie Joined: May 2017 From: Monaco Posts: 21 Thanks: 0  An idea about alternate universes
So I had an idea about a tennis ball spinning clockwise in one universe, counter clockwise in another universe, top spin in another universe bottom spin in another universe and there are enough universes, say 360, to take into account all the different angles and degrees of spin. then all the universes are aligned to create one perfect tennis ball, with infinite spin Maybe we could come up with a theory to calculate the amount of energy that such a tennis ball would make.. 
March 11th, 2018, 08:24 PM  #2 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,112 Thanks: 1002 
Is that universally speaking?

March 11th, 2018, 08:51 PM  #3 
Senior Member Joined: Aug 2012 Posts: 2,200 Thanks: 645 
I saw a video of Roger Penrose giving a talk about his theory that the universe keeps exploding in a big bang, collapsing into a singularity, then exploding into a new big bang. He has actually worked up a theory by which we might be able to detect a faint ripple of the previous universe within ours. Like ripples in a pond left by a rock. One thing I like about Penrose is that he's an eminent physicist not afraid to express really wacky ideas. And at the end of the day he's Sir Roger and the rest of us aren't, so who is to say? Here's an article about it. https://futurism.com/sirrogerpenro...hebigbang2/ 
March 12th, 2018, 02:14 AM  #4  
Senior Member Joined: Apr 2014 From: Glasgow Posts: 2,142 Thanks: 726 Math Focus: Physics, mathematical modelling, numerical and computational solutions  Quote:
Consider the following case: Universe 1: tennis ball spins clockwise with an angular velocity of 1 radian per second Universe 2: tennis ball spins anticlockwise with angular velocity of 1 radian per second If you add the angular velocities together, you get 0. But, does it makes sense to say that the tennis ball overall has no spin in this case? It clearly has a presence in multiple Universes and has spin in those Universes, so what meaning does the result 0 have?  

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