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Comments to #4
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Party 4 year s ago
The green light in a traffic signal also has a little blue in it so red/green colorblind people can tell the difference between the red light and the green light.
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Skeleton 4 year s ago
...#4 I highly doubt, that when they started shuffling giant red and green dots on the sticks - few hundred yrs ago anyone had a clue about all that BS. Same goes for the ship's starboard and port navigation lights - so u need to find better explanation.
Traffic lights
By now we should all be familiar with the 3 colors of traffic lights. Red means stop, green means go, and yellow means proceed with caution. However, there is a reason why these colors were chosen. Red is the color with the longest wavelength which means it can be seen from a bigger distance, allowing drivers to see it from far away. Yellow has a shorter wavelength than red but it’s longer than green. These wavelengths make it clearer when the lights change from green to yellow or from yellow to red.
3
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Party 4 year s ago
The green light in a traffic signal also has a little blue in it so red/green colorblind people can tell the difference between the red light and the green light.
0
2.
Skeleton 4 year s ago
...#4 I highly doubt, that when they started shuffling giant red and green dots on the sticks - few hundred yrs ago anyone had a clue about all that BS. Same goes for the ship's starboard and port navigation lights - so u need to find better explanation.