Radiation therapy and steam locomotive: what they have in common

1. Step 1. Radiation therapy — uses — X-rays. X-rays and gamma rays.
2. Step 2. X-rays — is used in — CT scanner. A CT scanner shines X-rays around a circle.
3. Step 3. CT scanner — has part — Ball bearing. The gantry turns on a bearing.
4. Step 4. Ball bearing — is part of — Bogie. Axle boxes with roller bearings.
5. Step 5. Bogie — is part of — Diesel locomotive. Bogies with wheelsets.
6. Step 6. Diesel locomotive — evolved from — Steam locomotive. It replaced the steam locomotive.

Open Evothings