Jessica KintnerProfessor of Physics

Clear explanations, worked problems, and visual tools -- built to help you understand physics.

Lightboard example: adding two vectors, worked out step by step

Most Popular Videos

Click to watch on YouTube.

Recent Longer Form Videos

Fresh off the (light)board.

Not Sure Where to Start?

A suggested watch order is on its way.

I'm putting together more explanation of who should watch what (many intro vidoes are algebra-based but quite a few are calculus-based, most are intro-level, things like that). For now, the playlists on YouTube present the topics in the order I'd do them in my courses.

View Playlists on YouTube →

Interactives

Small browser-based tools to build physical intuition. No install needed.

Screenshot of the Derivative Explorer tool showing a curve, its tangent line, and the derivative graph below it

The derivative as slope — f(t) and df/dt

Type any function, drag the slider along the curve, and watch the tangent line change live and see the value on its derivative graph.

Open →
Illustration of the Integral Explorer tool: a curve with the area beneath it shaded, positive area solid and negative area hatched

The integral as area-under-the-curve — f(t) and

Type any function, drag the slider along the curve, and watch the shaded area under it accumulate live onto its integral graph.

Open →
Illustration of the Motion Explorer tool: a bead on a vertical wire next to its position-vs-time graph

Record your own motion — x(t)

Drag a bead along a wire to create your own motion, watch the position-vs-time graph draw itself live, then play it back.

Open →

More interactives coming soon — browse all →

Resources

Problem sets, reference sheets, and study guides — coming soon.