Facts about Silver (the element)
- 11
Industrial mirrors and solar panels rely on silver coatings because its 95% reflectivity of infrared radiation makes it superior to aluminum for heat concentration systems.
- 10
Coinage containing 90% silver was standard in United States currency until 1965, when the government eliminated silver from dimes and quarters to address metal shortage during the Vietnam War era.
- 09
Medieval European artisans used silver leaf so thin it measured just 0.1 micrometers, allowing them to create luminous details in illuminated manuscripts and religious artwork that remained visible for centuries.
- 08
During the 1980s, the U.S. Strategic Stockpile held over 140 million ounces of silver, which the government sold off to reduce inventory, flooding markets and suppressing prices for decades.
- 07
Approximately 7000 tons of silver are mined annually worldwide, with Peru, Mexico, and China collectively accounting for over 40% of global production as of 2023.
- 06
Antibacterial properties of silver have made it a medical treatment for centuries, with 0.3 milligrams per liter of ionic silver proven effective against over 650 disease-causing microorganisms in modern clinical studies.
- 05
The human body contains approximately 0.01% silver by mass, with most concentrated in the skin, yet no confirmed biological function for this trace element has been established.
- 04
Photographic emulsions have used silver halide crystals since the 1820s because silver bromide and silver iodide are uniquely sensitive to light, enabling chemical photography before digital imaging.
- 03
At 99.99% purity, silver's reflectivity exceeds 99% across visible wavelengths, making it the most reflective element for mirrors and optical coatings.
- 02
Silver's highest oxidation state is +2, and it forms a black oxide coating when exposed to sulfur compounds, which is why sterling silver tarnishes over time.
- 01
Silver conducts electricity and heat better than any other element, with thermal conductivity of 429 watts per meter-kelvin at 25 degrees Celsius.