CONSERVATION LAWS
MATHEMATICIAN EMMY NOETHER
Noether's theorem (1918) asserts that if the laws governing
a system remain unchanged (symmetric) under a continuous
transformation-such as shifting in time, space, or
rotating-then there must exist a physical quantity that is
conserved as the system evolves. For example:
• Time translation symmetry leads to the conservation of energy
• Space translation symmetry leads to the conservation of linear momentum
• Rotational symmetry leads to the conservation of angular momentum
REVIEW of PHOTON PROPERTIES
THE BIGGEST MISCONCEPTION IN PHYSICS | VERITASIUM
https://www.youtube.com/watch?v=lcjdwSY2AzM (28 min)
ENERGY CONSERVATION
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 9 minutes - Start/Stop 49:38-58:16
Perhaps the 9 minutes - Start 1:21:00
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