I like the pitch drop experiment even though it may be more boring than watching paint dry. Pitch (ex: asphalt) is highly viscous liquids that appear in solid form. The best-known experiment version started in...
from Manila, Philippines
Kindness Maximalist. Don't let time surprise you. Co-founder, Satoshi Citadel Industries (est. 2014). Rebit.ph, Buybitcoin.ph / Advisor, Particl.io