I have been lecturing in less developed Africa when a change smoothly took place in business, streets and shops. The problem shifted to mathematical manipulation of the power of ten notation, SI prefixes, SI units, inter-conversion within the SI system, accuracy, precision and the uncertainties of measurement or calculated quantities. Then, there was no book for students on experimental science...
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I have been lecturing in less developed Africa when a change smoothly took place in business, streets and shops. The problem shifted to mathematical manipulation of the power of ten notation, SI prefixes, SI units, inter-conversion within the SI system, accuracy, precision and the uncertainties of measurement or calculated quantities. Then, there was no book for students on experimental science...