Good videos, with context.

Connect an experiment to the model that explains it

Fundamental physics videos

Fundamental physics becomes more useful when an explanation leads to a prediction you could check. These starting points connect a concrete electrical experiment with a broader account of why physical influences have a limiting speed.

Begin with a signal, then examine causality

Choose the wire experiment if you want to follow a dispute through an actual apparatus. Keep the geometry, the measured signal and the proposed explanation separate. The PBS discussion moves to a more abstract question: why the familiar speed limit belongs to spacetime rather than to light alone. The two videos work at different levels; an intuitive account of causality does not replace the measurements needed to distinguish electrical models.

Choose a starting point

Questions to take into the video

A demonstration can test a specific prediction without validating every informal explanation attached to it. Neither starting point is a substitute for a mathematical mechanics or electromagnetism course.

Explore a connected subject

Everyday physics & science demos ↗Electronics & circuit design ↗
Sources and selection notes

By . Updated . We compared source-video titles, available uploader descriptions and the linked archive records. The choice of starting points and viewing questions is our editorial guidance. These notes do not claim full-video viewing or independent expert review.

The complete list below preserves the October 31, 2026 snapshot and its original score order. Its labels and summaries include AI-generated source material; topic membership is broader than our selected starting points. Availability and factual claims can change. Suggest a correction.

All 164 videos in this archive topic

Browse the full snapshot after choosing your starting point.