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21.1 Diagnosing Appendicitis
A simple blood test to determine my white blood cell count was recommended by Radioactivity and Nuclear Chemistry.
A high white blood cell count is a symptom of appendicitis.
I had a normal white blood cell count.
In this case, radioactive emissions can pass through skin and muscle.
During the test, radioactive atoms were used to label the antibodies that were injected into my bloodstream.
The areas of the body where the infection is present are where the antibodies migrate.
A French scientist named Antoine-Henri Becquerel first observed radioactivity in 1896.
The greenish light emitted ered X-rays were a hot topic of physics research in his time.
He is from glow-in-the-dark toys.
After the product is exposed to light, it reemits some of it.
You can see the greenish glow of the emitted light if you turn off the room lights or put the glow-in-the-dark product in the dark.
The greenish glow was associated with the emission of invisible X-rays.
A photographic plate wrapped in black cloth was placed on top of a compound known to phosphoresce.
The crystals were exposed to sunlight.
He could see the emitted light when he brought the crystals back into the dark.
The X-rays would have passed through the black cloth and exposed the photographic plate if the crystals had also emitted X-rays.
This has been seen in Figure 21.2.
The results of Becquerel's hypothesis were presented and he believed that phosphorescence and X-rays played a key role in the discovery of radioactivity.
The French Academy of Sciences is linked to Becquerel.
The plate was darkened by some unknown form of penetrating radiation that covered that a photographic plate with the same crystals was produced continuously, independently of phosphorescence.
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