Thanks for the video. Some good tips, though your instructor could use some instruction himself on night vision and why we do not look straight at an object in order to see it! Our retinas have both rods and cones. Cones provide our color vision but rods have better sensitivity to low light. The part of our retina responsible for central vision (the fovea) has high cone density, but no rods. That is great for distinguishing colors during the day, but in the dark the fovea is essentially useless. In order to make use of our rods at night we should turn our eyes a few degrees (about 20) to either side of what you are trying to see to get to more light perception by using your rods instead. Okay, so that is your free visual science lesson for the day...keep those videos coming!
Since there appears to be confusion. [AFAIS] The termination bar is 50 feet wide with 11 red lights either side of centerline and 200 feet from the end. [14 CFR 91, §91.175 (c)] Operation below DA/ DH or MDA. Except as provided in paragraph (l) of this section, where a DA/DH or MDA is applicable, no pilot may operate an aircraft, except a military aircraft of the United States, below the authorized MDA or continue an approach below the authorized DA/DH unless- (1) The aircraft is continuously in a position from which a descent to a landing on the intended runway can be made at a normal rate of descent using normal maneuvers, and for operations conducted under part 121 or part 135 unless that descent rate will allow touchdown to occur within the touchdown zone of the runway of intended landing; (2) The flight visibility is not less than the visibility prescribed in the standard instrument approach being used; and (3) Except for a Category II or Category III approach where any necessary visual reference requirements are specified by the Administrator, at least one of the following visual references for the intended runway is distinctly visible and identifiable to the pilot: (i) The approach light system, except that the pilot may not descend below 100 feet above the touchdown zone elevation using the approach lights as a reference unless the red terminating bars or the red side row bars are also distinctly visible and identifiable. source code7700.com/approach_lighting_system.htm
Your eyes use more oxygen at night ? please explain.? What you are looking to understand and explain before this is the principles of scanning with your eyes based on the fovea or blind spot short comings which can hide objects.By holding the eyes in a direction for seconds will allow a moving object to pass through the blind spot of the eye reducing the chance of you not seeing it....sadly lots of road accidents occur every year due to this short coming of the human body
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Thanks for the video. Some good tips, though your instructor could use some instruction himself on night vision and why we do not look straight at an object in order to see it! Our retinas have both rods and cones. Cones provide our color vision but rods have better sensitivity to low light. The part of our retina responsible for central vision (the fovea) has high cone density, but no rods. That is great for distinguishing colors during the day, but in the dark the fovea is essentially useless. In order to make use of our rods at night we should turn our eyes a few degrees (about 20) to either side of what you are trying to see to get to more light perception by using your rods instead. Okay, so that is your free visual science lesson for the day...keep those videos coming!
Since there appears to be confusion.
[AFAIS] The termination bar is 50 feet wide with 11 red lights either side of centerline and 200 feet from the end.
[14 CFR 91, §91.175 (c)] Operation below DA/ DH or MDA. Except as provided in paragraph (l) of this section, where a DA/DH or MDA is applicable, no pilot may operate an aircraft, except a military aircraft of the United States, below the authorized MDA or continue an approach below the authorized DA/DH unless-
(1) The aircraft is continuously in a position from which a descent to a landing on the intended runway can be made at a normal rate of descent using normal maneuvers, and for operations conducted under part 121 or part 135 unless that descent rate will allow touchdown to occur within the touchdown zone of the runway of intended landing;
(2) The flight visibility is not less than the visibility prescribed in the standard instrument approach being used; and
(3) Except for a Category II or Category III approach where any necessary visual reference requirements are specified by the Administrator, at least one of the following visual references for the intended runway is distinctly visible and identifiable to the pilot:
(i) The approach light system, except that the pilot may not descend below 100 feet above the touchdown zone elevation using the approach lights as a reference unless the red terminating bars or the red side row bars are also distinctly visible and identifiable.
source code7700.com/approach_lighting_system.htm
Great vid I subbed
Your eyes use more oxygen at night ? please explain.? What you are looking to understand and explain before this is the principles of scanning with your eyes based on the fovea or blind spot short comings which can hide objects.By holding the eyes in a direction for seconds will allow a moving object to pass through the blind spot of the eye reducing the chance of you not seeing it....sadly lots of road accidents occur every year due to this short coming of the human body
This instructor also needs a lesson on what a terminating bar is. It is most certainly NOT the sequenced flashing "rabbit"!