Imaging

6 Splashes.

1. Airport X-rayAn airport scanner sends a fan of X-rays through each bag as the belt carries it past, and a row of detectors measures what gets through, one line at a time.
2. CT ExplainedA CT scanner (computed tomography) turns an X-ray tube and a curved row of detectors around the object, taking hundreds of views from every side.
3. Walnut CTThis is a real walnut, scanned with X-ray CT at CWI in Amsterdam: more than a thousand X-ray pictures taken from all around it, worked back into a volume of how dense the walnut is at every point.
4. Fruit MRIAn MRI scanner (magnetic resonance imaging) uses no X-rays.
5. Electron MicroscopeA scanning electron microscope sweeps a fine beam of electrons across a sample in a vacuum.
6. Thermal CameraEverything gives off infrared light, more the warmer it is.