Everyone has slipped on ice, but the reason is stranger than the textbook story — it isn't mainly pressure. This short course covers what actually makes ice slippery (a thin self-lubricating layer that exists even far below freezing), why the skater-pressure explanation is mostly a myth, and why ice is the rare solid that floats in its own liquid — the quirk that lets lakes survive the winter.
Everyone has slipped on ice, but the reason is stranger than the textbook story — it isn't mainly pressure. This short course covers what actually makes ice slippery (a thin self-lubricating layer that exists even far below freezing), why the skater-pressure explanation is mostly a myth, and why ice is the rare solid that floats in its own liquid — the quirk that lets lakes survive the winter.
