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Stay cool or look slimmer. Tough choice. (lemmy.world)

submitted 4 days ago by The_Picard_Maneuver@lemmy.world to c/whitepeopletwitter@sh.itjust.works

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[–] CalypsoGirl@lemmy.today 1 points 3 days ago (1 children)

I wish I had seen this at the beginning of Summer and the foreknowledge of what I would see walking around southern California all summer. I would print this out and hand it to every idiot I see wearing black on scorching sunny days. A majority of people walking around wearing black all summer! What is going on? Black is apparently in style lately because the world is falling apart & everyone is miserable

but are people this uneducated? White reflects light & keeps internal temperatures down! Black does the exact opposite! 🤦🏼‍♀️

[–] Spaniard@lemmy.world 2 points 3 days ago* (last edited 3 days ago) (1 children)

Bedouins wear black robes, the guardian did some tests and they found out the amount of heat the wearer is exposed too is the same with black and white robes.

Taylor, Finch, Shkolnik, and Borut measured the overall heat gain and loss suffered by a brave volunteer. They described the volunteer as "a man standing facing the sun in the desert at midday while he wore: 1) a black Bedouin robe; 2) a similar robe that was white; 3) a tan army uniform; and 4) shorts (that is, he was semi‑nude)".

Each of the test sessions (black-robed, white-robed, uniformed and half-naked) lasted 30 minutes. They took place in the Negev desert at the bottom of the rift valley between the Dead Sea and the Gulf of Eilat. The volunteer stood in temperatures that ranged from a just-semi-sultry 35C (95F) to a character-building 46C (115F). Though he is now nameless, this was his day in the sun.

The results were clear. As the report puts it: "The amount of heat gained by a Bedouin exposed to the hot desert is the same whether he wears a black or a white robe. The additional heat absorbed by the black robe was lost before it reached the skin."

Bedouins' robes, the scientists noted, are worn loose. Inside, the cooling happens by convection – either through a bellows action, as the robes flow in the wind, or by a chimney sort of effect, as air rises between robe and skin. Thus it was conclusively demonstrated that, at least for Bedouin robes, black is as cool as any other colour.

Source

Depending on of the fabric and how tight it is to the body black can keep you as cool.

[–] CalypsoGirl@lemmy.today 2 points 3 days ago

This study paid for by The Bad Guys ™️

But seriously

The additional heat absorbed by the black robe was lost before it reached the skin."

Thick multi-layer robes.

A different effect than single-layer black t-shirts & casual apparel that westerners wear. Returning our focus to OP's diagram.