E=mc2 is wrong? - Sixty Symbols (5+ min)
https://www.youtube.com/watch?v=mkiCPMjpysc
The Real Meaning of E=mc2 PBS Digital Studios (10+ min)
https://www.youtube.com/watch?v=Xo232kyTsO0
Why E=mc2 is wrong (6+ min)
https://www.youtube.com/watch?v=eOCKNH0zaho
DOES THE INERTIA OF A BODY DEPEND UPON ITS ENERGY-CONTENT?
https://www.fourmilab.ch/etexts/einstein/E_mc2/e_mc2.pdf
The 1923 English translation modified the notation used in
Einstein's 1905 paper to conform to that in use by the
1920's; for example, c denotes the speed of light, as
opposed the V used by Einstein in 1905. In this paper
Einstein uses L to denote energy; the italicised sentence in
the conclusion may be written as the equation "m = L/c2"
which, using the more modern E instead of L to denote
energy, may be trivially rewritten as "E = mc2".
The Derivation of E = mc2
http://adamauton.com/warp/emc2.html
"Perhaps the most famous equation of all time is E = mc2. The
equation is a direct result of the theory of special
relativity, but what does it mean and how did Einstein find
it? In short, the equation describes how energy and mass are
related. Einstein used a brilliant thought experiment to
arrive at this equation, which we will briefly review here.
"First of all, let us consider a particle of light, also
known as a photon. One of the interesting properties of
photons is that they have momentum and yet have no mass.
This was established in the 1850s by James Clerk Maxwell.
However, if we recall our basic physics, we know that
momentum is made up of two components: mass and velocity.
How can a photon have momentum and yet not have a mass?
Einstein's great insight was that the energy of a photon
must be equivalent to a quantity of mass and hence could
be related to the momentum."
The Derivation of E = mc2 Minute Physics (2+ min)
https://www.youtube.com/watch?v=hW7DW9NIO9M
A simple derivation of E = mc2
https://arxiv.org/pdf/physics/0308039.pdf
Abstract - Einstein's 1905 derivation of E = mc2 has been
criticized for being circular. Although such criticism have
been challenged it is certainly true that the reasoning in
Einstein's original derivation is not at all obvious.
Einstein's original derivation could be been made clearer.
This article describes a clear way of doing so.
E = mc2
Deriving the Equation (basic and Advanced)
http://www.emc2-explained.info/Emc2/Derive.htm
http://www.emc2-explained.info/Emc2/Deriving.htm
The theory of relativity and the Pythagorean theorem*
/https://arxiv.org/pdf/0809.2379.pdf
It is shown that the most important effects of special and
general theory of relativity can be understood in a simple
and straightforward way. The system of units in which the
speed of light c is the unit of velocity allows to cast all
formulas in a very simple form. The Pythagorean theorem
graphically relates energy, momentum and mass. The paper is
addressed to those who teach and popularize the theory of
relativity
sam.wormley@gmail.com