Online courses and dewar flask: what they have in common

1. Step 1. Online courses — uses — World Wide Web. The web.
2. Step 2. World Wide Web — was inspired by — Particle accelerator. The web was invented at CERN for sharing physicists’ data.
3. Step 3. Particle accelerator — uses — Vacuum. A vacuum chamber.
4. Step 4. Vacuum — is used in — Dewar flask. A vacuum.

Open Evothings