Mirror comparison with

In addition, the mirrors are adjustable, so that unimportant areas can be ignored. Light re-emmited from the surfaee is detected, and the detector signal is transmitted to a computer programmed with acceptable deviation levels for comparison with a reference component. Tolerance levels can vary for different areas of the same test piece they may, for example, be higher on a ground section than on adjacent unmachined areas. 

Whenever a free surface is present at some (mean) fixed position, most CFD codes assume it to be strictly flat, while in the direction normal to the free surface velocities and gradients of most variables are taken zero. Usually, this is accomplished by defining mirror cells at the free surface. It is not clear what the effect is of the use of such mirror cells on the flow field in the upper part of the vessel in comparison with real life where the surface is not necessarily flat. 

The substituents have been exchanged in a way that is impossible through any rotation of bonds or rotation through space. If this molecule is rotated in space in the direction shown, the mirror image nature of enantiomers is seen by comparison with the first of the three molecules above ... 

Figure 14.11 EUV spectrum for a Sn droplet obtained with a CO2 drive laser of an LPP system during high-repetition-rate operation in comparison with a high-temperature stable multilayer mirror reflectance curve. (After D.C. Brandt et al. )...

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