| http://www.w3.org/ns/prov#value | - Unfortunately, though, if there were a system failure, such as a circuit failure or a power supply (e.g., battery) failure, the liquid crystal device would fail to a clear condition creating the risk for eye injury if the failure were to occur during a welding operation or during some other condition during which it is desirable to provide a darkened, i.e., reduced light transmission, condition of
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