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1945 Press Photo ATTENDANTS SAN FRANCISCO CLEARING FOG - RRW88751

$12.33
AdID: 570314

Availability: In stock

Part Number: RRW88751

Height: 8

Width: 9

Source: Rogers

Details

This is an original press photo. ATTENDANTS AT SAN FRANCISCO OPERATE A DEVICE CONCEIVED BY CELLAN ROSS PLEASANTS FOR CLEARING A FOG- BOUND AREA.
Fog is a collection of water droplets or ice crystals suspended in the air at or near the Earth's surface. While fog is a type of a cloud, the term "fog" is typically distinguished from the more generic term "cloud" in that fog is low-lying, and the moisture in the fog is often generated locally (such as from a nearby body of water, like a lake or the ocean, or from nearby moist ground or marshes). Fog is distinguished from mist only by its density, as expressed in the resulting decrease in visibility: Fog reduces visibility to less than 1 km (5/8 statute mile), whereas mist reduces visibility to no less than 1 km (5/8 statute mile). For aviation purposes in the UK, a visibility of less than 2 km but greater than 999 m is considered to be mist if the relative humidity is 95% or greater - below 95% haze is reported.(WIKIPEDIA)Photo measures 9 x 8.25inches. Photo is dated 10-10-1945.