[Elsie]

If you increase the size of an electron to the size of the earth, it’ll weigh less than a feather.

Have you the math handy that explains this?

[Kevmo]

electron mass =
9.10938356 × 10^-28 grams

size of electron:
The upper bound of the electron radius of 10^−18 meters

Earth/Diameter
12.742 million meters [order of magnitude, 10^6]
Earth Mass: 5.972 × 10^24 kg

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Increase size of electron by 24 orders of magnitude: 10^6 meters.

Increase mass of electron by 24 orders of magnitude: 10^-4 grams.

Feathers weigh maybe a couple of grams.

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