2025 UPDATED |N3 Study| WITH MOSTLY TESTED COMPLETE
在中文中
QUESTIONS AND ANSWERS |100% RATED CORRECT |GRADED A+
What are some of the ionizing rays? - (ANSWER)alpha, beta, gamma that arises from the decay of x-rays
What are the penetration abilities (from least to greatest) - (ANSWER)gamma, beta, alpha
What does non-ionizing radiation refer to? - (ANSWER)energy that cannot cause ionization but can cause
harm to the other parts of the body
What is the difference in effects between non-ionizing radiation and xray/gamma radiation? -
(ANSWER)thermal effect, no cumulative effect
What is the danger of lasers? - (ANSWER)It can cause skin burn and eye injury. Over exposure to UV
can cause skin cancer. High intensity ultrasound can increase tissue temperature and cause bubbles of gas
or cavities in the body
What does LASER stand for? - (ANSWER)light amplification by stimulated emission of radiation. A
light that comes from a conventional light source radiates in all directions and in various wavelengths that
reinforces each other
, How many directions does a laser beam travel? - (ANSWER)One direction and in a specific wavelength,
在中文中
therefore, a narrow beam BUT comes in a wide range of frequencies: infrared to UV regions
What happens when the amplification of a laser is high enough? - (ANSWER)It can pass through a
partially reflecting end plate
What are the 4 types of lasing system? - (ANSWER)solid, gaseous, semi-conductor, liquid state/organic
dyes
What are the hazard classification for lasers? - (ANSWER)By output parameters: emission wavelength
emission duration
power output
accessible emission levels (AEL)
Properties for Class 1 lasers - (ANSWER)Not hazardous even if all accessible laser radiation output is
directed to the pupil or focused into one mm spot on skin for a day.
Should not have AEL of >0.39 microwatts
Properties for Class 2 lasers - (ANSWER)Low power and low risk
Wave length range of 400-700nm
no capable of causing eye injury
在中文中
QUESTIONS AND ANSWERS |100% RATED CORRECT |GRADED A+
What are some of the ionizing rays? - (ANSWER)alpha, beta, gamma that arises from the decay of x-rays
What are the penetration abilities (from least to greatest) - (ANSWER)gamma, beta, alpha
What does non-ionizing radiation refer to? - (ANSWER)energy that cannot cause ionization but can cause
harm to the other parts of the body
What is the difference in effects between non-ionizing radiation and xray/gamma radiation? -
(ANSWER)thermal effect, no cumulative effect
What is the danger of lasers? - (ANSWER)It can cause skin burn and eye injury. Over exposure to UV
can cause skin cancer. High intensity ultrasound can increase tissue temperature and cause bubbles of gas
or cavities in the body
What does LASER stand for? - (ANSWER)light amplification by stimulated emission of radiation. A
light that comes from a conventional light source radiates in all directions and in various wavelengths that
reinforces each other
, How many directions does a laser beam travel? - (ANSWER)One direction and in a specific wavelength,
在中文中
therefore, a narrow beam BUT comes in a wide range of frequencies: infrared to UV regions
What happens when the amplification of a laser is high enough? - (ANSWER)It can pass through a
partially reflecting end plate
What are the 4 types of lasing system? - (ANSWER)solid, gaseous, semi-conductor, liquid state/organic
dyes
What are the hazard classification for lasers? - (ANSWER)By output parameters: emission wavelength
emission duration
power output
accessible emission levels (AEL)
Properties for Class 1 lasers - (ANSWER)Not hazardous even if all accessible laser radiation output is
directed to the pupil or focused into one mm spot on skin for a day.
Should not have AEL of >0.39 microwatts
Properties for Class 2 lasers - (ANSWER)Low power and low risk
Wave length range of 400-700nm
no capable of causing eye injury
