Electromagnetic Spectrum and Infrared Radiation

1. Wavelength of short ultraviolet radiation is:
A. 700-1500 mµ
B. 1600-12,000 mµ
C. 0.1-3 mm
D. 180-290 mµ

2. Wavelength of long ultraviolet radiation is:
A. 700-1500 mµ
B. 290-400 mµ
C. 180-290 mµ
D. 0.1-3 mm

3. What ultraviolet wavelength will produce reticuloendothelial stimulation?
A. 2600-2700 Å
B. 2700-3000 Å
C. 2900-4000 Å
D. 2400-2500 Å

4. The magnitude of radiation flux at any particular point of the skin depends upon the:
A. Cross-sectional diameter of the radiation beam
B. Distance of that point from the radiating element
C. Wavelength of the radiation
D. Source of the radiation
5. The major portion of radiation from long infrared is absorbed in the:
A. corium of the skin
B. Subcutaneous layers of the skin
C. Stratum corneum
D. Stratum mucosum

6. The major advantage of infrared heat lamp is:
A. It filters out harmful ultraviolet rays
B. Local metabolism is increased
C. Erythema is produced
D. It emits radiation only (ultraviolet rays)

7. The penetration of the infrared radiation to the skin tissue depends upon:
A. Wavelength
B. Intensity of the source
C. Thickness of glass in the heat lamp
D. Wattage of the lamp

8. A natural source of infrared radiation is sunlight. Approximately what percentage of average sunlight is infrared radiation as compared to ultraviolet radiation?
A. 40%
B. 50%
C. 60%
D. 70%

9. All of the following statements apply to shortwave infrared radiation EXCEPT:
A. Luminous infrared
B. Tungsten filament
C. 1500-12000 mµ wavelength range
D. Penetrates as deeply as 10 mm into skin tissue

10. The primary effect of radiant energy on tissue is:
A. Increase in circulation
B. Reduction of pain
C. Decrease in muscle spasm
D. Thermal

11. Mottled appearance on the skin after repeated heat radiation is called:
A. Erythema dosage
B. Erythema ad lib
C. Erythema ab igne
D. Erythema pigmentation

12. The normal polar formula for galvanic