A small aperture will give greater depth of area than a large aperture.

At night, the lights of the junks and the luminous ray of the lighthouse play strange symphonies.

But the headlight was dismissed because its luminous beam was not seen on the ground.

A method for corneal laser surgery includes directing the focal point of a focused laser beam at a start point in the stroma.

This first thumb was subsequently taken out by integrating it into the figure’s thorax and covering it with a luminous brushstroke.

But we were obliged to consent that it could not be a headlight, since we could not see the luminous beam on the ground.

The light source (5) is directed through the prism (3) towards the reaction space (2) and the detector (6) is placed so as to receive the light from the prism (3).

Jupiter rotates once every 10 hours and the cone rotates with it like a lighthouse beam.

To illuminate the structures of the object, there is produced for each co-ordinate direction a light stripe, and the structures thus illuminated will appear separate according to the co-ordinate direction to form scanning images.