Sustainability, energy, ecology, and earth-science formulae.
Emissions from energy use and an emission factor.
Power extracted from wind by a turbine.
Maximum fraction of wind energy a turbine can capture.
Energy output of a photovoltaic array.
Amount remaining after a number of half-lives.
Acidity from hydrogen ion concentration.
Electrical energy used over time.
Growth of a population at a constant rate.
Population growth that slows as it nears carrying capacity.
Water consumed per unit of product or service.
Fraction of solar radiation reflected by a surface.
Energy produced over a lifetime divided by energy to build it.
Sound intensity level in decibels.
Approximate energy released by an earthquake.
Relates concentration and volume before and after dilution.