material, eg copper, has lower resistance than steel length - longer wires have greater resistance thickness - smaller diameter wires have greater resistance temperature - heating a wire increases ...

Plot a graph of resistance, R, in Ω on the y-axis against length, l, in cm on the x-axis). Draw the line of best fit. We can see from the graph that as the length of the wire, l, increases ...

Researchers have now found a new way to control superconductivity in a material by twisting the layers within it.

A new study reveals that the laws of physics don’t prohibit room-temperature superconductors, rekindling hope for a ...

Compounds containing nickel have been shown to carry electricity without resistance at the relatively ... to try to discover new physics about such systems.” Major laboratories worldwide are ...

Superconductivity, which entails an electrical resistance of zero at very low temperatures, is a highly desirable and thus ...

What is quantum physics? Put simply ... some materials are superconductors that allow current without electrical resistance, and why we can’t get this trick to work at room temperature.

Transposons, or "jumping genes"—DNA segments that can move from one part of the genome to another—are key to bacterial evolution and the development of antibiotic resistance.