sixpenceee: The above is the hand of an early X-ray machine operator. Early radiologists would calib
sixpenceee: The above is the hand of an early X-ray machine operator. Early radiologists would calibrate their X-ray machines by sticking their hands in the beam. They would draw lines amounting to 30 second intervals starting at their fingertips and continuing down to their wrist, so their fingers ended up getting the longest exposure. Their calibration measure was the “time” indicated on their hands when they noticed a slight burn (like a sunburn). Notice in the photograph how the tips of the fingers are the most damaged and how it gradually fades away down the rest of the hand. Most older techs from this era had to have their fingers amputated due to the high frequency of cancer. (Source) You may also like: A Creepy Medical Tour of the Past Interesting -- source link