Uploaded February 2018 | Updated September 2026, 3 weeks ago
Japanese 1 Yen coins are made from aluminum and can be made to float on the surface of water. This is an awesome demonstration of surface tension. Adding a drop of dish washing soap will destroy the surface tension and will cause the coin to sink. Yen are hard to find outside of Japan, but you can get some here: teachersource.com/product/floating-yen-coins/density-floating
Japanese 1 Yen coins are made from aluminum and can be made to float on the surface of water. This is an awesome demonstration of surface tension. Adding a drop of dish washing soap will destroy the surface tension and will cause the coin to sink. Yen are hard to find outside of Japan, but you can get some here: teachersource.com/product/floating-yen-coins/density-floating
