Tags » Relativity

You can't get there from here

In this series of posts I’ve tried to get across several ideas:

  • By Einstein’s theories, in our Universe every possible combination of place and time is an…
  • 704 more words

Is Everything in the Universe the Same Age?

(Starts With A Bang!) – Ethan Siegel:

Or can moving at relativistic speeds through a general relativistic Universe change everything? …

starts-with-a-bang 162c3f89a2d4



The wind reminds me of you.

I can’t figure out why.

Is it because I can’t hold onto it?

I can’t be in control.

Or is it because it has the potential to destroy anything in its path? 109 more words

Einstein painted with beer.

Used a waterbrush filled with beer on a pizza box at Greenbush Brewing Company a local brewery here in Sawyer Michigan.


MSEI.1: Newton’s first law and inertial reference frames

In 1687 Sir Isaac Newton published his most famous work, commonly known as Principia, in which he gave the first account of his three laws of dynamics. 940 more words


Matter & Interactions I, Week 2

This week we began readings from chapter 36 (24MB) of Arnold Arons’ 1965 calculus-based textbook Development of Concepts of Physics (rare, but occasionally found on the used market…I have two copies and I hope to get Dover to reissue the book in paperback).  1,112 more words



To a man, it is but a seedling. To an ant, a forest. To an amoeba, a universe of many worlds and kingdoms, all connected by the roots and branches of this great tree.