opacity meaning

What Is Exhaust Opacity?

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What Is Exhaust Opacity? Opacity is a measure of the amount of light obscured by the particulate matter (PM) or soot in the exhaust from diesel engines, measured under normal operating conditions. … The opacity of diesel exhaust can be measured by instruments or visually by certified observers. What is opacity in flue gas? Exhaust

What Is The Meaning Of Opaque?

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What Is The Meaning Of Opaque? adjective. not transparent or translucent; impenetrable to light; not allowing light to pass through. not transmitting radiation, sound, heat, etc. not shining or bright; dark; dull. hard to understand; not clear or lucid; obscure: The problem remains opaque despite explanations. What is opaque explain with example? Opaque objects block