The medal is awarded in three versions: gold is for outstanding original scientific work in physics or chemistry published during the previous year; silver is for outstanding writing of science for a popular audience over several years; and bronze is for outstanding popularization of science through non-written methods, such as in museums or through business.
The medal is presented in three forms: gold is for exceptional pioneering scientific research in physics or chemistry published within the previous year; silver is for remarkable science writing for a general audience spanning several years; and bronze is for notable science promotion through non-verbal means, such as exhibitions or business endeavors.