[Kevmo]

You asked for ‘handy’ math. Increase the size of the thing, increase the weight of it by the same number of orders of magnitude.

You had a lot of trouble with orders of magnitude before, as I recall. You were off by more than 100 orders of magnitude. I can see why you’re confused. Maybe this exercise will get you over that threshold of understanding.

[Elsie]

Maybe this exercise will get you over that threshold of understanding.

What exercise?

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 According to modern understanding, the electron is a point particle with a point charge and no spatial extent. Attempts to model the electron as a non-point particle have been described as ill-conceived and counter-pedagogic.^{[1]  https://en.wikipedia.org/wiki/Classical_electron_radius}

 

 

^{From what I can find, we have an apples/oranges thing here.  A volume that an electron COULD occupy is calculated, but the actual size of the electron cannot be.}

 

 

The electron rest mass (symbol: m_e) is the mass of a stationary electron, also known as the invariant mass of the electron. It is one of the fundamental constants of physics.

It has a value of about 9.109×10⁻³¹ kilograms or about 5.486×10⁻⁴ daltons, equivalent to an energy of about 8.187×10⁻¹⁴ joules or about 0.5110 MeV.^[2]