A change in the intensity of X-radiation Whiteboard exercise Play

A thickness measuring device Animation Play

Converting metric units of length Student activity Play

Defectoscopy and the measurement of thickness Whiteboard exercise Play

Defectoscopy and the measurement of thickness Whiteboard exercise Play

Defectoscopy and the measurement of thickness Student activity Play

Permeability and absorption of X-rays Whiteboard exercise Play

Permeability and absorption of X-rays Student activity Play

Stringed instruments Student activity Play

The frequency of oscillation of strings Slideshow Play

The size of a partition Student activity Play

The size of partition Simulation Play

The size of partition Whiteboard exercise Play

Volumes of the encyclopaedia on the shelf Whiteboard exercise Play

X-ray absorption Animation Play

X-ray radiation Glossary Play

X-ray radiation Student activity Play