Of the roughly 400 young participants from 84 nations, more than half will return to their homes with a gold, silver, or bronze medal.
The International Physics Olympiad is an international competition for secondary school students whose interest in physics extends beyond the classroom.
The IPhO is supported by the SNSF and held in a different country each year. Switzerland and the Principality of Liechtenstein had been selected to host the event in 2016.