Big Bang theory and incandescent light bulb: what they have in common

1. Step 1. Big Bang theory — uses — Theory of relativity. General relativity.
2. Step 2. Theory of relativity — was inspired by — Interferometer. The Michelson–Morley experiment found no ether.
3. Step 3. Interferometer — includes — LIGO. An interferometer.
4. Step 4. LIGO — uses — Vacuum. 4 km vacuum tubes.
5. Step 5. Vacuum — is used in — Incandescent light bulb. The bulb was evacuated so the filament would not burn out.

Open Evothings