what are the olympic gold medals made of
Gold medal Olympic Gold medals are required to be made from at least 92.5% silver, and must contain a minimum of 6 grams of gold.[6] All Olympic medals must be at least 60mm in diameter and 3mm thick.[6] Minting the medals is the responsibility of the Olympic host. From 1928 through 1968 the design was always the same: the obverse showed a generic design by Florentine artist Giuseppe Cassioli of Greek goddess Nike with Rome's Colloseum in the background and text naming the host city; the reverse showed another generic design of Nike saluting an Olympic champion.
Paris Peace Accords
Gold medal While some gold medals are solid gold, others are gold-plated or silver-gilt, like those of the Olympic Games, the Lorentz Medal, the United States Congressional Gold Medal and the Nobel Prize medal. Nobel Prize medals consist of 18 karat green gold plated with 24 karat gold. Before 1980 they were struck in 23 karat gold.
Olympic-size swimming pool 2,500 m3 (88,000 cu ft) in cubic units. About 2 acre-feet.