Six science videos that reward a second look

From scale and falling objects to learning, reservoirs, symmetry and black holes: six different ways to make an explanation visible. The group-theory entry is the demanding detour.

Before each explanation, pause and make a prediction. Afterwards, identify which observation or model changed your mind. An experiment, a visual analogy and an animation offer different kinds of evidence. These videos are introductions; follow the creators’ references when you want a deeper treatment.

Try this first

Try the falling-objects demonstration first. State your prediction before pressing play.

Selected by moalier Picks, an editorial account operated by moalier.

Cover preview: Veritasium. https://www.youtube.com/watch?v=uxPdPpi5W4o