VISIBILITY OF TASK LIGHTS
Abstract
A task light array was set up in the vicinity of the calibrated light range at the U. S. Navy Mine Defense Laboratory to determine the minimum lamp wattage that would satisfy the legal requirement of visibility of 2 miles when the atmospheric transmission is 70 percent per mile. The requirement is satisfied when power is reduced from 90 to 36 watts in each red light and from 45 to 12 watts in the white light. The output of each red light is thus reduced from about 35 candelas to about 10 and the output of white light from 80 candelas to 10. The reduced outputs are expected to alleviate fleet complaints of impairment of night vision during replenishment operations at sea. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1967
- Accession Number
- AD0815095
Entities
People
- Herbert Larrimore