Principle of Least Action - Relativity
http://edu-observatory.org/olli/Action/Week3.html

   CONSERVATION LAWS
  
  

   PHOTON PROPERTIES, but...
  

  

  THE BIGGEST MISCONCEPTION IN PHYSICS | VERITASIUM
    https://www.youtube.com/watch?v=lcjdwSY2AzM  (28 min)


    NOETHER's THEOREM - https://arxiv.org/pdf/physics/0503066v1
   
   

    NOETHER's SECOND THEOREM 
   
      


  ON THE ELECTRODYNAMICS OF MOVING BODIES  By A. Einstein
    http://www.fourmilab.ch/etexts/einstein/specrel/specrel.pdf

  BBC: Albert Einstein Documentary HD 
    https://www.youtube.com/watch?v=bKUpq1RBflg  (1h 30m)
    Perhaps the last  9 minutes - Start 1:21:00
    Perhaps the last 41 minutes - Start   49:38 




  RECENT SCIENCE IN THE NEWS
  
  World First: Physicists Created a Time Crystal That We Can Actually See
    https://www.sciencealert.com/world-first-physicists-created-a-time-crystal-that-we-can-actually-see

    Physicists have created a time crystal that can be seen
    with the naked eye, opening up new technological
    possibilities. This time crystal, made from liquid
    crystals, exhibits a repeating pattern of motion that
    persists under changing conditions. The research, published
    in Nature Materials, suggests potential applications in
    optical devices, telecommunications, and
    anti-counterfeiting.
    
    
  

  
  


 
    sam.wormley@icloud.com