7:30 p.m.
I think for spacecraft or international space station or even for the passenger aircraft or the trains
We shouldn't be using light emitting diode or LED lights that use a white color or cool colors with very high kelvin
Color Temperature (Kelvin)
Color temperatures between 3100K and 4500K are referred to as “cool white” or “bright white.” Light bulbs within this range will emit a more neutral white light and may even have a slightly blue tint. Above 4500K brings us into the “daylight” color temperature of light.
This is because white lights are irritating to the eyes
It is nauseating
A lot of people aren't exactly photosensitive, or sensitive to lights or sound, but everyone is "relatively" sensitive to anything
I think it'll improve performance if people are comfortable
At factories, they use white light, as it's easier to see, but still, it can be damaging to their performance
It's better to go with 2,000 or 1,000 Kelvin
As it's warmer, it's easier, more soothing
When we do "Sri Lankan Airlines", we can switch to warmer lights, then, even the passenger seated next to the passenger who turns on or switches up their personal directed LED light on coach or economy, they won't be as badly affected to necessitate wearing eye coverings
When we are going to clean the aircraft, we can however, turn off lights, switch on powerful UV lights, then do a thorough job to clean after every flight
It's just a personal preference, I much prefer yellow color lights now
