Biology

Everyday wind turbine profit problems come down to one relationship between air density, airflow area, turbine efficiency, price of electricity,

There is no point reaching for a calculator that cannot show its working. This one starts from air density, blade

The water potential calculator takes overburden potential (ψa), gravitational potential (ψg), hydrostatic potential (ψh), matric potential (ψm), osmotic potential (ψo)

Two figures in, a clear answer out. The water demand calculator uses population size, mdd to add ratio, phd to

The wastewater calculator works out ss leaving activated sludge process, mlvss weight and volume from average primary treated bod, average

Two figures in, a clear answer out. The vegetable yield calculator uses length of rows, number of rows, seed distance,

Everyday vegetable seed problems come down to one relationship between length of row, length of row, no of rows, no.

Two figures in, a clear answer out. The vegan footprint calculator uses time you’ve been vegan to produce animal lives,

Two figures in, a clear answer out. The vapor pressure deficit calculator uses vp air, vp dew point, vp leaf,

Whether you are estimating on the spot or checking a result somebody else gave you, the turtle tank calculator is