User:Samboy

SEMI-RETIRED

This user is no longer very active on Wikipedia as of May of 2020.

I have a website and a blog.

I have, over the years, contributed a number of images to the Wikipedia.

My preferred gender pronouns are he/him/his.

The Fine-structure constant:

$$\alpha ={\frac {e^{2}}{2\varepsilon _{0}hc}}\approx {\frac {1}{137}}$$

where

• e is the elementary charge (1.602176634×10⁻¹⁹ C);
• h is the Planck constant (6.62607015×10⁻³⁴ J⋅Hz⁻¹);
• c is the speed of light (299792458 m⋅s⁻¹);
• ε₀ is the electric constant (8.8541878188(14)×10⁻¹² F⋅m⁻¹).