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| What | X-ray | What | Xerography Copier | |
| Who | Konrad Roentgen, Wilhelm | Who | Chester Carlson | |
| Where | Britain, Germany | Where | United States | |
| When | 1895 | When | 1937 | |
| Why | It is important because if people get hurt they might brake a bone, so then you would just put your body on the x-ray. | Why | The xerography photo copy machine was important because it helps share things with people by making copies. | |
| Researcher | Roslyn, Sunly | Researcher | Ryan L. | |