An interference figure produced looking straight down or close to the optic axis of a uniaxial mineral will show a characteristic " Maltese " cross shape to its isogyres.
12.
A "'conoscopic interference pattern "'or "'interference figure "'is a pattern of optical extinction ( apparent isotropy ) would be seen.
13.
A slightly more complex procedure allows for a tint plate to be used in conjunction with interference figure techniques to allow measurement of the " optic angle " of the mineral.
14.
Optically, this mineral has positive biaxial birefringence, which can be shown obtaining an interference figure that is blue in the upper right and lower left quadrants of the figure while looking down the c-axis.
15.
Quartz is also uniaxial ( optic interference figure ), but so are all minerals in the tetragonal, hexagonal and trigonal systems . . so whether it's prudent to mention that, I don't know.
16.
But since the determination of the direction of the recoil of the screen after the particle has passed cannot influence the successive development of the process, we will still have an interference figure on the screen " F ".
17.
A monochromatic beam ( one for which all the particles have the same impulse ) encounters a first screen, diffracts, and the diffracted wave encounters a second screen with two slits, resulting in the formation of an interference figure on the background " F ".
18.
It is also important to note that any experiment designed to evidence the " corpuscular " aspects of the process at the passage of the screen " S " 2 ( which, in this case, reduces to the determination of which slit the particle has passed through ) inevitably destroys the wave aspects, implies the disappearance of the interference figure and the emergence of two concentrated spots of diffraction which confirm our knowledge of the trajectory followed by the particle.
