this post was submitted on 03 Apr 2026
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Showerthoughts
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A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The most popular seem to be lighthearted clever little truths, hidden in daily life.
Here are some examples to inspire your own showerthoughts:
- Both “200” and “160” are 2 minutes in microwave math
- When you’re a kid, you don’t realize you’re also watching your mom and dad grow up.
- More dreams have been destroyed by alarm clocks than anything else
Rules
- All posts must be showerthoughts
- The entire showerthought must be in the title
- No politics
- If your topic is in a grey area, please phrase it to emphasize the fascinating aspects, not the dramatic aspects. You can do this by avoiding overly politicized terms such as "capitalism" and "communism". If you must make comparisons, you can say something is different without saying something is better/worse.
- A good place for politics is c/politicaldiscussion
- Posts must be original/unique
- Adhere to Lemmy's Code of Conduct and the TOS
If you made it this far, showerthoughts is accepting new mods. This community is generally tame so its not a lot of work, but having a few more mods would help reports get addressed a little sooner.
Whats it like to be a mod? Reports just show up as messages in your Lemmy inbox, and if a different mod has already addressed the report, the message goes away and you never worry about it.
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Colors aren’t physical. There is no way to measure color. We can measure frequency, wavelength, or energy. So there isn’t any light that is yellow at all. There is light, or combinations of light, that we perceive to be yellow but that is simply a construction of the mind.
There's no strictly defined set of wavelengths for yellow. But you could pick a random wavelength and as long as most people say it's yellow, that's a yellow wavelength.
Yellow is between 590 and 610nm.
You can call it whatever you want but color isn’t a physical property of light. It is a construction of the mind. You claim a certain wavelength is yellow. A computer display can show a combination of red and green pixels that we perceive to be the same shade of yellow even though the original yellow wavelength isn’t present at all. Color isn’t from the light itself but from our mind.
Correct. You can't measure yellow, you can only classify yellow.
In the same way we classify all sorts of things. Types of planets. Types of animals. Races of people.
But that doesn't mean you can say there's no such thing as yellow light. That's like saying there's no such thing as dogs because there's no Internet dog property to measure.
Semi-Subjective classification exists within science and within our language. It is a real thing. And so there IS such a thing as yellow light.
The color yellow subjectively exists. Like I said at the beginning, color is a product of the mind. Objectively, as in is it directly measurable, light has no color. Physics deals with objective measurements.
Objectively yellow is between 590 and 610nm.
More bad news, there are displays that are RYGB, made by Sharp.
I don’t see how a RYGB monitor is bad news.
How does one objectively measure color?
If color is in light then why do people see yellow from an RGB monitor when no yellow light is present? If color is a physical property of light how do we see color? Do the chemicals in our cones see/respond to color? How? How is color detected by chemicals in our eye transmitted to the brain? Does electricity also support color? If so, how?