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Questions and Answers
What did Wilhelm Conrad Röntgen discover in 1895?
What did Wilhelm Conrad Röntgen discover in 1895?
- X-radiation (correct)
- Gamma rays
- UV rays
- Infrared radiation
What is the approximate wavelength range of X-rays?
What is the approximate wavelength range of X-rays?
- 1 millimeter to 1 micrometer
- 1 meter to 1 kilometer
- 10 nanometers to 10 picometers (correct)
- 100 micrometers to 100 nanometers
What is the frequency range of X-rays?
What is the frequency range of X-rays?
- 300 hertz to 300 kilohertz
- 3×10^16 Hz to 3×10^19 Hz (correct)
- 3 petahertz to 3 exahertz
- 30 terahertz to 30 gigahertz
In which field are X-rays widely used for identifying some chemical elements?
In which field are X-rays widely used for identifying some chemical elements?
What is the energy range of X-rays?
What is the energy range of X-rays?
Who is the German scientist credited with discovering X-radiation?
Who is the German scientist credited with discovering X-radiation?
What does ALARA stand for in radiation safety?
What does ALARA stand for in radiation safety?
What should a pregnant worker do upon becoming aware of her pregnancy?
What should a pregnant worker do upon becoming aware of her pregnancy?
What is the unit of radiation exposure dose that is used with regard to the human body?
What is the unit of radiation exposure dose that is used with regard to the human body?
Why are dose limits set for occupational exposure to ionizing radiation?
Why are dose limits set for occupational exposure to ionizing radiation?
What does it mean to follow the ALARA principle in radiation safety?
What does it mean to follow the ALARA principle in radiation safety?
What is a controlled area in a radiology facility?
What is a controlled area in a radiology facility?
Why are dose limits set at a level that reduces the risk of serious effects like cancer?
Why are dose limits set at a level that reduces the risk of serious effects like cancer?
What should workers do regarding monitoring devices and personal protective equipment?
What should workers do regarding monitoring devices and personal protective equipment?
What is a supervised area in a radiology facility?
What is a supervised area in a radiology facility?
What does an employer need to ensure for all workers in a radiology facility?
What does an employer need to ensure for all workers in a radiology facility?
What is the approximate energy range of X-rays?
What is the approximate energy range of X-rays?
Who discovered X-radiation in 1895?
Who discovered X-radiation in 1895?
What is the frequency range of X-rays?
What is the frequency range of X-rays?
What does ALARA stand for in radiation safety?
What does ALARA stand for in radiation safety?
In which field are X-rays widely used?
In which field are X-rays widely used?
What is the approximate wavelength range of X-rays?
What is the approximate wavelength range of X-rays?
What does ALARA stand for in the context of radiation safety?
What does ALARA stand for in the context of radiation safety?
In a radiology facility, which areas are designated as controlled areas?
In a radiology facility, which areas are designated as controlled areas?
What is the primary purpose of setting dose limits for occupational exposure to ionizing radiation?
What is the primary purpose of setting dose limits for occupational exposure to ionizing radiation?
What does a pregnant worker need to do upon becoming aware of her pregnancy in a radiology facility?
What does a pregnant worker need to do upon becoming aware of her pregnancy in a radiology facility?
What is the unit of radiation exposure dose used with regard to the human body?
What is the unit of radiation exposure dose used with regard to the human body?
What principle emphasizes minimizing radiation exposure by using protective measures such as time, distance, and shielding?
What principle emphasizes minimizing radiation exposure by using protective measures such as time, distance, and shielding?
Who must ensure that occupational dose limits are not exceeded and protection and safety are optimized for all workers?
Who must ensure that occupational dose limits are not exceeded and protection and safety are optimized for all workers?
What should workers do regarding monitoring devices and personal protective equipment in a radiology facility?
What should workers do regarding monitoring devices and personal protective equipment in a radiology facility?
What is a supervised area in a radiology facility?
What is a supervised area in a radiology facility?
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Study Notes
X-Rays and Radiation Safety
- Wilhelm Conrad Röntgen discovered X-radiation in 1895.
- X-rays have an approximate wavelength range of 0.01 to 10 nanometers.
- X-rays have a frequency range of 3 × 10^16 to 3 × 10^19 Hz.
- X-rays are widely used in atomic spectroscopy for identifying some chemical elements.
- X-rays have an energy range of 100 eV to 100 keV.
- Wilhelm Conrad Röntgen is the German scientist credited with discovering X-radiation.
Radiation Safety
- ALARA stands for "As Low As Reasonably Achievable" in radiation safety, emphasizing minimizing radiation exposure.
- A pregnant worker should notify her employer upon becoming aware of her pregnancy.
- The unit of radiation exposure dose used with regard to the human body is the sievert (Sv).
- Dose limits are set to reduce the risk of serious effects like cancer.
- Workers should regularly check and maintain monitoring devices and personal protective equipment.
Radiology Facility
- A controlled area in a radiology facility is designated to minimize radiation exposure.
- A supervised area in a radiology facility is designated to minimize radiation exposure, although to a lesser extent than a controlled area.
- An employer must ensure that occupational dose limits are not exceeded and protection and safety are optimized for all workers.
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