A laser shining into the mixture produces a speckle pattern that results from the motion of the particles.

(Bottom) A single frame of the complete speckle pattern.

When a laser beam shines on the material, a random and unique speckle pattern will arise.

Until the astronomers have learned how to analyze the speckle pattern and remove it, they will not know which dots might be planet candidates.

The resulting image is a speckle pattern with black 'fringes' representing contours of constant 2nπ.

When this change is a multiple of 2π, the speckle pattern remains the same, while elsewhere it changes.

A speckle pattern can also be seen when sunlight is scattered by a fingernail.

When laser light which has been scattered off a rough surface falls on another surface, it forms an "objective speckle pattern".

The light at a given point in the speckle pattern is made up of contributions from the whole of the scattering surface.

The speckle pattern which is seen when using a laser pointer is another diffraction phenomenon.