The temperature can drop to freezing at Naples. But that doesn't happen often, only about once every year or two. Most winter nights only cool down to 40 or 50 degrees F. Days per month on average in Naples when the minimum temperature drops to 40 or 50 Â°F or lower.
John Larson the inventor of the lie detector or polygraph first started as a medical grad at California University. This invention first was a failure by James Mackenzie in 1902, but when John Larson advanced this invention he changed what the machine studied.he test they took lasted for about 2 hours. After the test experts would examine the results to determine if the person was telling the truth about the crime. The lie detector uses different wires with a rubber pad to measure rates and pulses. They place the wires in different places on the body.
The first X-ray device was discovered accidentally by the German scientist Wilhelm Roentgen (1845-1923) in 1895. He found that a cathode-ray tube emitted invisible rays that could penetrate paper and wood.The rays caused a screen of fluorescent material several yards away to glow.homas Alva Edison invented an X-ray fluoroscope in 1896. American physiologist Walter Cannon used Edison's device to observe the movement of barium sulfate through the digestive system of animals and, eventually, humans.