Zettel 202109282326 : Brownian Motion and the Big Bang
Ben Orlin describes nondifferential motion in his chapter Do the Dusty Dance. This chapter is from his book Change is the Only Constant.
I don’t understand what he’s talking about.
But I’m left with the image that particles change directions instantaneously. Orlin says this instantaneous movement is nondifferential or Brownian motion. No measurement exists for capturing the speed of this motion. This motion isn’t like tossing a ball into the air. A ball leaves the hand at a certain speed. Then it slows until it hangs motionless for an infinitesimal moment. Then it descends towards the ground. You can calculate the ball’s change in speed and direction during the journey from the hand to the ground.
But not so with particles. Particles change position with speed-less motion. The bombardment of other particles causes them to leap to their next position. Math equations can’t capture the changes in speed and direction.
Reding that made me ask: Was the Big Bang a speed-less release of energy?
UPDATE
After writing this, I stumpled across this on 01/Oct/2021:
What happened before the Big Bang? A NASA astrophysicist explains, by Dr. Michelle Thaller.
Here, Dr. Thaller describes how the edge of the observable universe is hot energy. The light from that energy is finally getting to us. This light dates back to around 4,000 years after the Big Bang. We’re actually seeing backward in time. So now we know what the universe looked like 4,000 years after the Big Bang. She talks about how a space smaller than an atom contained all the energy of the universe in a singularity. But she also says that our singularity wasn’t alone. A collision from another singularity might have sparked the Big Bang of our universe. And then a Big Bang for that one.
Again, that makes me think of Brownian motion.
The link is from Big Think. You can watch the video or read the transcript.
September 28, 2021 unlinked cosmology mathmatics calculus