Exposure duration2 hundredths s
90.6 trillionthsDog years
6.3 millionthsMicrocenturies
About 20 milliseconds
Photo from Wikimedia Commons
Medical X-ray (Single Chest Exposure)
Seeing through you in a fraction of a second/Medicine & Biology
A standard chest X-ray exposes the patient to about 0.02 millisieverts of radiation, equivalent to roughly 2.4 days of natural background radiation. The X-ray tube generates photons at energies of 20-150 keV, and the entire exposure lasts only about 20 milliseconds. Wilhelm Rontgen discovered X-rays in 1895 and took the first medical X-ray of his wife's hand. She reportedly said, 'I have seen my death.'
Measurements
Photon energy (typical)9.6 quadrillionths J
17.8 sextillionthsHighway car crashes
9.6 quadrillionthsSneezes
29.1 sextillionthsBoiled kettles
About 60 keV
X-ray frequency14.5 quintillion Hz
6.3 quintillionMetronome ticks
26.4 quintillionRecord players
9.7 quintillionTurn signals
At 60 keV
X-ray wavelength20.7 trillionths m
8.52Compton wavelengths
517 sextillionthsEarth circumferences
207 trillionthsHand breadths
About 0.02 nm at 60 keV
Tube power (during exposure)50,000 W
83.3Blenders
41.3 millionthsFlux capacitors
Typical 100 kV at 500 mA