One of the most notorious cases of a company hiding a dangerous product involved Ford Pinto.
The Ford Pinto<span> is a subcompact car that was manufactured by Ford Motor Company in North America. It was only sold from 1971 to the 1980 model years.</span>
The properties can be influenced by many factors. The most common are the shape of the object, the lighting where the object is located, the environment (colors, shapes, density of other objects, etc.), and the viewing angle of the observer.