Questions and Answers
Mercury is used in thermometers because it has a high adhesion force with the wall of the glass.
False
Thermography is a process that produces a thermal image of the body surface using visible radiation.
False
Thermograms are normally displayed on a computer screen.
False
Thermistors can measure temperature changes of 0.1°C.
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Thermistors have a significant effect on the temperature of the surrounding tissue.
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Thermistors are used to monitor the heart rate of patients.
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Man-made sources of radiant heat include wire coils and 500W incandescent lamps.
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Radiant heat can increase the surface temperature by penetrating the skin up to 5mm.
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Ultrasonic waves are a type of electromagnetic wave.
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Radiant heat is used for surface heating of the body.
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Ultrasonic waves are more effective at depositing heat in soft tissues than in bones.
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Excessive exposure to radiant heat can cause swelling and erythematic.
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