Mum's put her NBN in a Faraday cage?!

(It's actually fine - this isn't the wifi part)

Edit: apparently it's for protection from the dog.

After an admittedly quick search, EVERY drawing I can find of the colour spectrum is flat out wrong, with the same error. Even the ones on pages that are educational resources specifically about spectral colours. People made these images by blending red, green, and blue channels - they KNEW they were adding red in at the blue end, but they did it anyway. Every single one that I can find.

I think we'd give people a better education if our visualisations of spectrums began at black and went through red-brown to red, then at the top end went through blue-black to black, without any of that "oh, but we call this end violet, so let's make it the color of a violet" nonsense.

And then students might actually NOTICE that the pinks and purples and violets AREN'T on the spectrum, and we could have really cool inquiry-led conversations about why not, about spectral and non-spectral colours, and the biology of human colour perception.

Today I learned about the Papal Line of Demarcation, in which Christians literally divided the globe in half, between the Kingdom of Portugal and the Crown of Castile (by various national treaties and papal bulls in the late 15th/early 16th centuries). Your land was officially up for grabs to the Christians if you weren't Christian by Christmas, 1492. (Brazil speaks Portuguese because a little bit of it stuck over the line, although they invaded well beyond the border of the treaty).

Probably should've consulted the Judgement of Solomon part of the Bible on this one - if both mothers want to cut the baby in half, maybe it doesn't belong to either of them?