Head lights mirrors

The polysulfones are used for manufacturing of printed-circuit substrates, moving parts of relays, coils, clamps, switches, pipes socles, potentiometers details, bodies of tools, alkaline storage and solar batteries, cable and capacitor insulation, sets of television and stereo-apparatuses, radomes. The details under bonnet, the head lights mirrors, the flasks of hydraulic lifting mechanisms of cars are produced from polysulfones. 

Fig. 34 Mirror at a distance of 50 m and turned on dipped beam head lights...

The heart of a Fourier transform infrared spectrophotometer is the interferometer in Figure 20-26. Radiation from the source at the left strikes a beamsplitter, which transmits some light and reflects some light. For the sake of this discussion, consider a beam of monochromatic radiation. (In fact, the Fourier transform spectrophotometer uses a continuum source of infrared radiation, not a monochromatic source.) For simplicity, suppose that the beamsplitter reflects half of the light and transmits half. When light strikes the beamsplitter at point O, some is reflected to a stationary mirror at a distance OS and some is transmitted to a movable mirror at a distance OM. The rays reflected by the mirrors travel back to the beamsplitter, where half of each ray is transmitted and half is reflected. One recombined ray travels in the direction of the detector, and another heads back to the source. 

The set up is now in principle ready to start an experiment. The coarse approach is carried out to position the tip close to (but not in contact with) the sample surface. Using an eyepiece, the cantilever can be viewed from the side (or alternatively one can use a top-view CCD camera for this purpose). With the eyepiece, we locate the reflection of the laser light on the cantilever and its reflection (mirror image) on the sample (red spots). Using the stepper motor, we lower the optical head until the spots are close however, we still want to clearly be able to detect a gap between the spots. In older scanner types, the optical head is lowered by using the stepper motor for one pod of a tripod, while the other two are lowered manually using the corresponding screws. In this case, it is essential that the head is lowered such that it stays leveled at all times. 

Scenario 2 describes a night drive with low ambient brightness (from the head lamps). The measurement values (see Table 3) clearly show the high contrast on the monitor (14 or 6) compared to the contrast in the mirror (1.6). An internal amplification in the CMS allows for this high contrast value, which displays a contrast that is double as high than in reality (6.4). Even with maximum dimming, the monitor still approximately reproduces the actual contrast. In contrast, in the light conditions of this scenario, the mirror only reflects a quarter of the actual measured contrast. This means, it reduces the contrast. 

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