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Intrusion Devices – New and Emerging Technology in Worker Safety Presented by: Ken Kochevar FHWA Safety/ITS Specialist (916) 498-5853
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The Ray Model of Light Lesson 4. Light and Matter Light is represented as straight lines called rays, which show the direction that light travels. Ray
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A Helping Hand in Communication The future of communication for the hearing and vision impaired Mr Iain Murray Dr Euan Lindsay
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