IN the issue of Mind for January 1943, Prof. A. D. Ritchie, under the title “The Logic of Question and Answer”, discusses problems connected with the use of hypotheses in scientific method. He begins ...

The ability for cells to control gene expression in response to changing conditions is crucial for their survival. People spend their entire careers teasing apart these mechanisms, many of which are ...

A logic gate is an electronic component (or set of them) that performs a logic operation, in which the binary values 0 and 1 are represented with two different voltage values, as seen in the previous ...