28 results found for Colin Byfleet

A brief look at the Physics behind sending signals along cables and via geostationary satellites. An experiment to measure the speed of an electrical pulse in a cable is described and the Physics of the orbits of communcations satellites is develope....

'The amazing Mr Briggs' or 'Where do Logarithms come from?'

Be wary of high interest rates! An introduction to how loans grow.

Making life easy when using percentages. A sometimes fraught topic looked at differently.

Mutiplying and dividing fractions: a systematic approach to this perennial problem.

How can we represent fractions in the simplest way?   Equivalence of decimal and common fractions.

An approach to adding and subtracting fractions, using an understanding of the processes involved.

An introduction to the various types of numbers which are recognised as important.

A pen and pencil method of extracting square roots

A better way to extract square roots, with rapid convergence

How can we make sensible estimates of very large numbers? It is often very important to know the size of an unknown number, at least to within a factor of ten.

A description and demonstration of the way in which craters formed by dropping objects into sand can be linked to some elementary physics