A non-standard combined unit, likely a typo or context-specific abbreviation. In standard physics, “W/m” (watts per meter) denotes linear heat flux density, while “W·m” (watt-meter) has no common physical meaning and may be confused with torque units like “newton-meter.” It is not recommended as an independent unit in formal metrology; symbol accuracy should be verified.

A non-standard combined unit, likely a typo or context-specific abbreviation. In standard physics, “W/m” (watts per meter) denotes linear heat flux density, while “W·m” (watt-meter) has no common physical meaning and may be confused with torque units like “newton-meter.” It is not recommended as an independent unit in formal metrology; symbol accuracy should be verified.