The light absorbed,or collected, by an asbestos surface can be recognized by an appearance all its own.
VOA: special.2009.11.17
Next, Mr Powell argued that Iraq's chemical-weapons programme would be almost impossible for inspectors to find because, to all outward appearance, its facilities look like chemical factories.
This has all the appearance of a Mexican standoff, where both sides are lined up facing each other but neither wants to shoot first for fear of being shot in return.