There was this strange fad of repainting blackboards to green in the early 80s, because someone thought white text on a black background was causing eyesight problems. I don’t know if that actually turned out to be true.
It was actually just that the world was black and white before that.
exactly, they were always green, but since the world was black and white some of them went cheap and put up a black board instead of the proper green.
When the world switched to color the black ones often were repainted.
Blackboards were often real slate. Chalkboards (note the different name!) were wood painted green. I don't know why the name was different, but that is what I always saw.
I couldn't find any reliable source, but the most convincing idea I read was to reduce contrast and glare issues between the white chalk and its background. The green would reflect more light than the black, reducing the contrast and the glare. Also, the original blackboards were made of black slate, but then they became synthetic which made it easier to change the color.
I don't think it's true but it's real that it may give problems to some people (especially astigmatic people)
I can still smell the air post eraser clap. Probably cancerous now that I think about it.
It was Tuberculosis they warned of.
In California.
It is known
Ahh, the lovely sound and feel of dragging your fingernails across the blackboard, fun times, fun times
I’m cringing just reading this
There are no gangster blackboards. You don't know what that word means.
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:
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.