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Class IIIb Lasers Lab Report

Decent Essays

Pre-Lab Discussion
Laser Safety
Lasers in the classes IIIa and IIIb are capable of causing damage to the eye when a laser in one of these classes is directly exposed to a person’s eye, or in some cases, when reflecting off of a smooth surface. Class IIIa lasers have a power output of less than 5 mW, whereas class IIIb lasers can have a power output between 5 and 500 mW, and thus high-power class IIIb lasers can be a fire hazard and cause minor burns to the skin.
The “blink reflex” is a protective reflex in which involuntary blinking occurs as a response to the eyes being touched or exposed to very bright light. The reflex can first be seen in infancy and persists throughout adulthood (“Infant Reflexes”).

Light
Reflection involves a ray of light that approaches and reflects off of a surface, such as a mirror. The incident ray is the ray of light that moves toward the surface, while the reflected ray is the ray that moves away from the surface. The angle of reflection refers to the angle …show more content…

The instrument used for endoscopies, called an endoscope, consists of a long tube that has a light and a video camera attached to the end that is inserted into the mouth, through the esophagus and stomach, and into the duodenum. The endoscopy can be used to assess symptoms like abdominal pain, nausea, bleeding, trouble swallowing, and vomiting. It can also be used to detect tumors and ulcers (as well as the ulcer-causing bacterium, Helicobacter pylori), collect tissue for biopsies, and treat existing problems such as bleeding from ulcers. Endoscopies can also be used in combination with other diagnostic procedures, such as an ultrasound. This helps doctors see other organs in the body, such as the pancreas (“Upper Endoscopy: Why It’s

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