Final Installment of the Mass and Energy Article is Up

I’ve now finished the last installment of the Mass and Energy article, whose first two installments were completed last week.  If you’ve read the first two, skip down past Figure 5 to the section entitled “Where We Are So Far”.  The third installment summarizes what’s been explained about energy, momentum and mass, introduces the concept of the mass of a system of two or more objects, and then goes on to illustrate all of the issues in a very famous system: a Higgs particle decaying to two photons (particles of light), as viewed by three different observers.

More articles providing a bit of additional side information, and others addressing more subtle questions for which the Mass and Energy article was a prerequisite, are coming soon.

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