Radiography is the use of the property of X-rays to cross materials to view inside objects. The impact on society of this technique has also been immense. The application fields are medical, non-destructive testing, food inspection, security and archeology.
Radiography started in 1895 with the discovery of X-rays, also referred to as Rontgen rays after Wilhelm Conrad Rontgen who first described their properties in rigorous detail. These previously unknown rays were found to be a type of electromagnetic radiation. It wasn't long before X-rays were used in various applications, from helping to fit shoes, to the medical uses that have persisted. X-rays were put to diagnostic use very early, before the dangers of ionizing radiation were discovered.
The term skiagrapher was used until about 1918 to mean radiographer.