Uranium glass is a type of glassware that contains a small amount of uranium oxide. The spelling of the word "uranium" is phonetically transcribed as /jʊˈreɪniəm/, which means that the first syllable is pronounced with the "yuh" sound, the second syllable is pronounced with a long "a" sound, and the final syllable is pronounced with the "ee-uhm" sound. The spelling of "glass" is phonetically transcribed as /ɡlæs/, which means that it is pronounced with a hard "g" sound, followed by a short "a" sound and a "ss" sound.
Uranium glass, also known as Vaseline glass, is a type of glass that has a distinct yellow or green glow when exposed to ultraviolet light. It is characterized by its uranium content, which gives it this unique fluorescent property. Uranium glass is made by adding small amounts of uranium oxide to the glass mixture during production.
The uranium content in uranium glass typically ranges from 0.1% to 2% of the total glass composition. Although this might sound concerning due to uranium's radioactivity, the levels of radioactivity in uranium glass are generally considered to be extremely low and not hazardous to health.
Uranium glass became popular during the late 19th and early 20th centuries and was mainly used in the production of decorative glassware, such as vases, bowls, and tableware. The distinctive fluorescence of uranium glass was highly sought after and became a desirable feature among collectors.
The yellow or green glow exhibited by uranium glass is a result of the glass's ability to absorb UV light and re-emit it in the visible spectrum. This phenomenon is called fluorescence. The intensity of the glow can vary depending on factors such as the uranium content and the thickness of the glass.
Today, uranium glass is still produced and collected for its unique aesthetic appeal and historical value. It is highly valued by collectors and enthusiasts who appreciate its luminous beauty and the craftsmanship involved in its production.
The word "uranium" in "uranium glass" refers to the chemical element uranium, which is used as a colorant in the glass. The term "uranium" itself comes from the planet Uranus, which was discovered in 1781 by the astronomer William Herschel. Uranus was named after the ancient Greek deity Ouranos, who was the personification of the sky.
When uranium was first discovered in the late 18th century, it was mainly used in the production of yellow pigment for pottery and glassware. The unique yellow-green fluorescence of uranium glass became highly sought after, and it gained popularity during the late 19th and early 20th centuries, particularly for decorative glassware.
The term "uranium glass" emerged due to the prominent usage of uranium as a colorant in this type of glass.