was discovered in 1895 by Wilhelm Conrad Roentgen (1845-1923) who was a Professor at Wuerzburg University in Germany
for patients covered by health insurance, out-of-pocket costs typically consist of nothing, if the plan covers X-rays in full, or a copay of$10-$50 or coinsurance of about 10%-50%.
they have the ability to pass through solid matter, and, in conjunction with a photographic plate, provide a picture of bones and interior body parts
potential applications of rays as an aid in medicine and surgery
possible radiation damage on the molecular, cellular, and organ system
In 1938, electronic manufacturers in Chicago developed the first wearable hearing aid that consisted of a wire connecting a small earpiece to an amplifier-receiver that could be clipped onto the the wearer’s clothes
Hearing aid prices typically range from $1,500 to $3,500 per unit
It makes some sounds louder so that a person with hearing loss can listen, communicate, and participate more fully in daily activities
improve the hearing and speech comprehension of people who have hearing loss
have to perform maintenance on your hearing aids from time to time. This may include removing any built up ear wax from the casing
In 1970, a team led by Robert Maurer with Donald Keck and
Peter Schultz at Corning Glass developed the first suitable glass, which Corning then continued to improve. That same year, a team at Bell Labs developed
the first room-temperature semiconductor laser, providing a practical
pulsing light source suitable for a digital optical system
On average, fiber optic cable installation costs $1 to $6 per foot depending on the fiber count
They carry electric signals similar to how the signals would be carried on a copper wire.
They carry signals hundreds of times further than copper wire, have extremely high bandwidth, and are thinner and have a lighter weight
When workers dig to lay down new fiber optic cables, they sometimes hit old wires and break them.