A logarithm is the power which a certain number is raised to get another number. Before calculators and various types of complex computers were invented it was difficult for scientists and ...

This rectangular aluminum instrument has a scale of reciprocal inches, unevenly divided and labeled R I; a scale of equal parts, labeled I and numbered by ones from 1 to 10 and by tens from 15 to 95; ...

MIT scientists have suggested used electric vehicle batteries could offer a more viable business case than purpose-built systems for the storage of grid scale solar power in California. Such ‘second ...