Elinvar
- Date
- c. 1920 · confidence low
- Place
- Sèvres, Île-de-France, France
- Credited to
- Charles Édouard Guillaume
- Field
- Matter & energy
What it is
Nickel-iron-chromium alloy whose modulus of elasticity barely changes with temperature, developed by Charles Édouard Guillaume following his invention of Invar.
What it led to
- Watch and precision-instrument springs insensitive to temperature
- Contribution to Guillaume's 1920 Nobel Prize in Physics
- Use in high-precision balance springs