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Tech journalist since the dark ages. Windows Secrets, LangaList newsletter, Windows Magazine (NetGuide, Home PC), Byte, Popular Computing, yadda yadda yadda. Google me, if it matters.

This feed is mostly personal interest; it's NOT my professional writing. There's tech here, yes, but also lots of general science and some politics and weird humor thrown in.

Saturday, September 27, 2014

...if a body gives off the energy L in the form of radiation, its mass diminishes by L/(V squared)...

"...[I]f a body gives off the energy L in the form of radiation, its mass diminishes by L/V2..."

That sentence was published on this day 109 years ago, on September 27, 1905 in a German scientific paper called, “Does the Inertia of a Body Depend Upon Its Energy-Content?”

The author was a guy named Albert Einstein.

You know the equation in its now more-familiar form: E=mc2.

That, and three other papers he published at the same time, changed the world.

Story: http://earthsky.org/human-world/this-date-in-science-emc2