THE value of block diagrams in geographical and geological instruction cannot be questioned, but many teachers find these difficult to draw, especially on the blackboard, at short notice. Prof. Lobeck ...

Digital multimeters convert analog signals to digital information. In general, DMMs have a minimum of five typical functions. They are DC voltage, AC voltage, DC current, AC current, and resistance.

The term “privacy” is used to refer to many different human values, including control of personal information, fairness, personal security, financial security, peace and quiet, autonomy, integrity ...