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What should a pilot do to keep his night vision (scotopic vision)?
Why should a pilot turn his attention to the instruments when approaching on a snowed up, foggy or cloudy winterday? Because
Illuminated anti-collision lights in IMC
A shining light is fading out (i. e. when flying into fog, dust or haze). What kind of sensation could the pilot get?
To prevent the "autokinetic phenomena", the following can be done:
A pilot is used to land on small and narrow runways only. Approaching a larger and wider runway can lead to :
The impression of an apparent movement of light when stared at for a relatively long period of time in the dark is called
The time for dark adaptation is
Which problem may occur, when flying in an environment of low contrast (fog, snow, darkness, haze)?
Under these conditions it is:
A pilot approaching an upslope runway
The area in front of a threshold descends towards the threshold.
Possible danger is:
Sunglasses with variable filtration (phototrope glasses)
What misjudgement may occur if an airplane is flying into fog, snow or haze?
Depth perception when objects are close (< 1 m) is achieved through
The time required for complete adaptation is
The requirement of good sunglasses is to
Why does a deficiency in vitamin A cause night-blindness?
Scanning at night should be performed by:
Approaches at night without visual references on the ground and no landing aids (e.g. VASIS) can make the pilot believe of beeing
A pilot is used to land on wide runways only. When approaching a smaller and/or narrower runway, the pilot may feel he is at a
Flickering light when reflected from spinning rotor blades
A pilot approaching a runway which is narrower than normal may feel he is at a greater height than he actually is. To compensate he may fly a
What impression do you have when outside references are fading away (e.g. fog, darkness, snow and vapor)?
Hypoxia will effect night vision
The effect of hypoxia to vision
What does not impair the function of the photosensitive cells?
The fovea centralis is
The retina of the eye
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