Mass explanation: I’ve always been told that mass was not the same as weight, and that grams are the metric unit of mass. But grams are a measurement of weight, so am I stupid, was it was explained to me wrong, or is science just not make sense?
In: 140
Mass is matter. It does not care if it in grams, pounds, or whatever gravitational force is holding it, or arbitrary force we invent.
What I am trying to get at is matter is restless mass, which is energy, which doesn’t rest.
A photon is massless energy, always moving, at a measurable speed.
Quantum physics gets deeper into this, but it’s not eli5 material.
Photons have no mass, but energy. There was a guy who wrote a paper in 1915…
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