From the 1930s to the 1950s, an X-ray machine called a shoe-fitting fluoroscope was common in shoe stores
People would try on shoes, stand with their feet in the machine, and allow the salesperson to view live images of the bones of their feet in the shoes! Sometimes the salesperson would reach down and adjust the person's shoes for a better image. These machines used X-rays and exposed the feet of customers to 5 to 30 seconds of radiation. Further, lower doses of radiation exposure also occurred within about 10 to 15 inches of the outside of the machine. If you were looking for medical problems resulting from the use of these fluoroscopes in shoe stores, where would you expect the greatest harm? A) customers who had their feet exposed to the X-ray device
B) the salespeople who operated the machine to sell shoes
C) salespeople who worked in nearby stores
D) the salesperson who worked behind the cash register in the store
B
You might also like to view...
What are midlatitude cyclones?
What will be an ideal response?
On this figure of a continental collision, which continent would have had subduction-related magmatism before the collision?
A. the continent on the right B. the continent on the left C. both continents D. neither continent
The ________ zone consists only of deep trenches along the margins of continents
A) abyssal B) bathyal C) hadal D) littoral E) subneritic
In the coastal forest of Oregon an area was clear-cut for logging. Trees at the edge of the clearing and 200 meters into the forest died within a few months after the logging began. What is the best explanation for the death of the trees?
A. Increased sunlight, wind and temperature negatively affected the trees B. The roots of all of the trees were damaged C. Nitrogen fixing bacteria in the roots of the trees were killed D. The trees at the edge of the forest were more prone to disease