Erbium (noun)

Erbium is a chemical element with the symbol Er and atomic number 68.

Origin:

Erbium is a chemical element with the symbol er and atomic number 68, it was named after the swedish village of ytterby where it was first discovered.

Examples:

1. Erbium is used in fiber-optic amplifiers and lasers.
2. Erbium is a rare earth element and is found in small amounts in many minerals.
3. Erbium ions are used in spectroscopy as a marker for certain chemical compounds.
4. Erbium-doped fiber amplifiers are used in long-distance telecommunications.
5. Erbium is used in metallurgy as a dopant in some alloys to improve their strength and hardness.