LOGAN, Utah (AP) – A Logan defense contractor says it has developed an instrument that can measure stray voltage in the atmosphere and warn of lightning strikes.Campbell Scientific, Inc. says the electric field meter can sense a violent thunderstorm from a distance of five to seven miles and give warning of lightning before it strikes.Logan High School and Sky View High School in Smithfield have lightning meters mounted above their stadiums. Logan High’s athletic trainer, Brad Nelson, tells KSL-TV of Salt Lake City that the equipment has proved itself when players are on the field.Logan High has stopped or delayed games when the sensor measures more than 1,000 volts per square meter in the air. The equipment costs about $10,000.
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