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84 Multiple Choice Antworten
What impression do you have when outside references are fading away (e.g. fog, darkness, snow and vapor)?
Objects seem to be much bigger than in reality
Objects seem to be closer than in reality
It is difficult to determine the size and speed of objects
There is no difference compared with flying on a clear and sunny day
Hypoxia will effect night vision
at 5000 FT
less than day vision
and causes the autokinetic phenomena
and causes hyperventilation
The effect of hypoxia to vision
can only be detected when smoking tobacco
is usual stronger with the cones
is stronger with the rods
does not depend on the level of illumination
What does not impair the function of the photosensitive cells?
Toxic influence (alcohol, nicotine, medication)
Oxygen deficiency
Acceleration
Fast speed
The fovea centralis is
the area of best day vision and best night vision
the area of the blind spot (optic disc)
where the optic nerves come together with the pupil
the area of best day vision and no night vision at all
The retina of the eye
only regulates the light that falls into the eye
filters the UV-light
is the muscle, changing the size of the crystalline lens
is the light-sensitive inner lining of the eye containing the photoreceptors essential for vision
What should a pilot do if he has no information about the dimensions of the runway and the condition of the terrain underneath the approach? He should
make a visual approach and call the tower for assistance
be aware that approaches over downsloping terrain will make him believe that he is higher than actual
make an instrument approach and be aware of the illusory effects that can be induced
be aware that approaches over water always make the pilot feel that he is lower than actual height
Hypoxia effects visual performance.
A pilot may:
get blurred and/or tunnel vision
have a reduction of 25% in visual acuity at 8000 FT AGL
be unable to maintain piercing vision below 5000 FT AGL
get colour blindness accompanied by severe headache
