Question 1 : Fill in the gaps

Complete this text with the words given in Table 1

After all the interferences phenomenon is easy, a single physical magnitude is responsible of that phenomenon, . . . . . .It represents the . . . . . . between both paths browsed by the light. In the case of two beams interferences with a perfectly coherent light the expression of the intensity equals . . . (give a relation) . . . . A perfectly coherent light is a temporally coherent light which means that the source is . . . . . . , it is also coherent spatially which means that the source is. . . . . . . If the light is not perfectly coherent anymore, the . . . . . . decreases and the standardized intensity distribution can be written as . . . (give a relation) . . . . There are two kinds of interferometers, the . . . . . . -splitting ones like . . . . . . and the others . . . . . . -splitting like . . . . . . . The advantage of . . . . . . interferometers in comparison with the others is their luminosity. In the case of a wide source the interferences, if they exist, are . . . . . . . With Michelson interferometer we can get two types of assembly: the . . . . . . one where the interferences are located to infinity and the . . . . . . one where the interferences are located on the. . . . . . .At the level of a light fringe, the . . . . . . equals a whole number of times the wavelength; it is equal to an . . . . . . of times the . . . . . . . for a dark fringe. On a screen the spatial period is called the . . . . . . .

Here is a list of words you may use. A word can be used different times or other never.