🛠️ Invention or technique

Aerogel

Date
1931 · confidence high
Place
Stockton, California, United States
Credited to
Samuel Stephens Kistler
Field
Matter & energy

What it is

After a bet with Charles Learned over who could replace the liquid in a jelly with gas without it shrinking, Kistler managed to dry silica gels while preserving their porous structure, creating the first aerogel.

What it led to

  • Extreme thermal-insulation materials used in spacesuits and space probes
  • A new class of low-density porous materials

Links

Sources✓ verified 2026-09-25