Energy
Boiling Liquid CO2 as a Turbine Working Fluid: Can It Replace Steam?
CO2's 31°C critical point makes condensing CO2 turbines feasible only with cold sinks. Why sCO2 Brayton (10 MWe STEP Demo) leads the field.
Nuclear
Science
DIY Alpha Radiation Detector: PIN Photodiode Build Under $30
Build a working alpha radiation detector with a decapped PIN photodiode and charge-sensitive amp for under $30. Includes the paper-sheet test.
Energy
Mobile Nuclear Reactors: Road Transport, Permitting, and the SMR Deployment Ecosystem
Project Pele, eVinci, and Kaleidos are engineering the reactor. The logistics ecosystem (routes, permits, crews, depots) is still missing.