In a review just published in Nature Materials, researchers take aim at the oldest principle in electronics: Ohm's law.

BUYANG LI, HUADONG GAO, WEIWEI SUN, UNCONDITIONALLY OPTIMAL ERROR ESTIMATES OF A CRANK–NICOLSON GALERKIN METHOD FOR THE NONLINEAR THERMISTOR EQUATIONS, SIAM Journal on Numerical Analysis, Vol. 52, No.

The class of models includes nonlinear simultaneous equations models and other models of interest. A problem in constructing efficient instrumental variables estimators for such models is that the ...

Learn how to solve equations with brackets, 𝑥 terms on both sides, and fractions using inverse operations in this GCSE maths study guide.