Following up on the International Year of Light in 2015, the UN has declared 16 May as the International Day of Light. This date commemorates the first discharge of a laser in 1960 by the physicist Theodore Maiman. 

IEC Technical Committee (TC) 62 (electrical equipment in medical practice) held its first meeting 50 years ago today to begin work on standardizing medical equipment, in large part to address the need for increased safety. 

X-ray technology has many applications, from airport security to telescopes for exploring the cosmos and sometimes even for revealing lost paintings.  Medical imaging remains one of the most common uses.