PA System

Some articles on pa system, pa, system:

Hamish & Andy (radio Show) - Past Segments - PA System
... Every Friday, The PA system is where Hamish Andy take callers that have something to say to a certain person or group that they deem important ...
Measurements of Sunscreen Protection - SPF Equivalence - PA System
... Asian brands, particularly Japanese ones, tend to use The Protection Grade of UVA (PA) system to measure the UVA protection a sunscreen provides ... The Protection Grade of UVA (PA) system is based on the PPD reaction and is now widely adopted on the labels of sunscreens ... According to the Japan Cosmetic Industry Association PA+ corresponds to a UVA protection factor between two and four, PA++ between four and eight, and PA+++ more than eight ...

Famous quotes containing the word system:

    For us necessity is not as of old an image without us, with whom we can do warfare; it is a magic web woven through and through us, like that magnetic system of which modern science speaks, penetrating us with a network subtler than our subtlest nerves, yet bearing in it the central forces of the world.
    Walter Pater (1839–1894)