The first dental radiograph was produced using an exposure time of:
a. 0.5 second.
b. 1 minute.
c. 5 minutes.
d. 25 minutes.
e. 1 hour.
d. Dr. Otto Walkhoff, a German physicist, was the first to expose a prototype of a dental radiograph. This was accomplished by covering a small, glass photographic plate with black paper to protect it from light and then wrapping it in a sheath of thin rubber to prevent moisture damage during the 25 minutes that he held the film in his mouth.
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How many hours of study time should you schedule for each hour of class time?
A) 0-1 B) 2-3 C) 4-5 D) 6-7
The A in RHUMBA means the goal can reasonably be
A) Achieved given the frequency and intensity of the intervention plan B) Achieved in the time frame established given the condition of the client C) Realistically achieved and sustained by the client D) Accomplished only through occupational therapy intervention