masks

The authority of public health officials, particularly concerning communicable disease, has long been predicated upon a decision made by the Supreme Court in 1905, Jacobson v. Massachusetts.

Vaccination and masks

I'm now the father of an amazing little girl who is just now learning to talk.

I have previously written on the physics of direct contact, which pertains to how much attention we need to pay to wipe down packages and surfaces.

Without a mask, droplets can travel up to 8 feet. Here are the visualizations for three off-the-shelf alternatives, a surgical type mask available at pharmacies, a folded hankerchief, and a two layer home-made cotton mask.