SOUND REPRODUCERS - invented by Richard Bartholomew Smith - for use with early phonographic records Magic in SydneySOUND WAVE MEASUREMENT SYSTEM - WW1 invented by Professor W. L. Bragg, of Adelaide Smith's Weekly 6 June 1936SPEEDOS - invented in 1927SPLAYD - invented by William McArthur in ...
Lane, in his 2014 JNAA article “South Australian WW1 soldiers’ ‘forget-me-not’ pennies’” describes a peculiarly South Australian example of forget-me-not coins as “base-metal coins which have been hammered with letter and numeral punches to record a farewell message between two people...
Lane, in his 2014 JNAA article “South Australian WW1 soldiers’ ‘forget-me-not’ pennies’” describes a peculiarly South Australian example of forget-me-not coins as “base-metal coins which have been hammered with letter and numeral punches to record a farewell message between two people...