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Comments to #9
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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.
Toilet paper
Toilet paper has the color white because it’s bleached. Without the bleach, the paper would have a brownish color. Toilet paper is not found in many other colors because companies would have to dye it and it would cost them more money. This means that toilet paper is white because it’s more cost-effective.
However, that’s not the only reason for their color. Colored toilet paper wouldn’t decompose as quickly. Also, when the colored toilet paper was created, many doctors associated it with increased health risks. White was a safe choice.
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.