The Academy awards several prizes: Large Gold Medal (since 1924), Gold Medal (since 1921), Brinell medal (Brinellmedaljen, since 1936, and named after Johan August Brinell), Gold Plaque (since 1951), Honorary Sign (since 1919), Axel F. Enstrom Medal (1959-1981), amongst others.
Royal Navy | Royal Air Force | Academy Awards | Swedish language | United States Military Academy | Royal Dutch Shell | Russian Academy of Sciences | Royal Society | Royal Albert Hall | Royal Shakespeare Company | Royal Opera House | Royal Victorian Order | Royal Engineers | Royal Australian Navy | National Academy of Sciences | American Academy of Arts and Sciences | Royal National Theatre | Royal Canadian Navy | Royal Canadian Air Force | Royal Court Theatre | Academy Award for Best Foreign Language Film | Royal Marines | United States Naval Academy | engineering | United States Air Force Academy | Engineering | Royal Commission | Royal Academy of Music | Anne, Princess Royal | Royal Philharmonic Orchestra |
Johnsen has also been elected to the Royal Swedish Academy of Agriculture and Forestry, the Royal Swedish Academy of Engineering Sciences and selected as Laboratory Director of the Year by the Federal Laboratory Consortium.
He is Fellow of the American Physical Society, Fellow of the Institute of Physics (UK), and Corresponding Fellow of the Royal Society of Edinburgh (Scotland, UK), a Foreign Member of the Physics Class of the Royal Swedish Academy of Sciences, the Royal Swedish Academy of Engineering Sciences, and an Associate Fellow/Member of TWAS-the World Academy for the Advancement of Sciences in the Developing World (Trieste, Italy).