The author, , a Canadian astrophysicist, self-publishes the book. The only official digital version is sold through his Gumroad store (or occasionally via Scott Rao’s publishing portal). As of this writing, the price is approximately $15-20 USD for the EPUB. This is a steal for 200+ pages of original research.
Using high-speed photography, the book demonstrates that an uneven pour creates micro-channels. When water channels, the rest of the coffee bed stagnates, leading to bitter (over-extracted) and sour (under-extracted) flavors simultaneously. the physics of filter coffee epub work
[ Water Pour ] │ ▼ (Gravity / Darcy's Law) ┌──────────────────┐ │ Coffee Bed Layers│ ──► [ Resistance / Particle Size ] └──────────────────┘ │ ▼ (Permeability) [ Filter Paper ] ──► [ Pore Size Exclusion ] │ ▼ [ Final Cup ] The author, , a Canadian astrophysicist, self-publishes the