The Science Behind Self-Heating Japanese Lunch Boxes Explained! #shorts #youtubecreatorcommunity

Calcium oxide, or quicklime (CaO), is a white, caustic compound produced by heating calcium carbonate (limestone) in a process called calcination, which releases carbon dioxide. When mixed with water, it undergoes a highly exothermic reaction to form calcium hydroxide (slaked lime). Calcium oxide is widely used in agriculture to neutralize acidic soils, in construction for cement and glass production, in steel manufacturing, and in water treatment to reduce acidity and remove impurities. It also serves as a desiccant to absorb moisture from air or gases.

#science #lunchbox #japan #japanesecraftsmanship #japanesefood

[flameguy]

The Japanese military uses this aswell.

[TheSergio]

MRE technology transformed into civilian use. Its pretty smart and convenient if you're commuting somewhere

[theeditor]

I don't know if this is the same thing as 'kairo' but I used to love those small heating pads for your hands that were sold everywhere in winter. It was strange at first but such a lifesaver.

[GabrielGarcia-]

It's like military MRE. Just ad water to the pouch and it heats up

[mobiuseno]

Japanese have always fascinated me 😮 💚🇯🇵

[philurbaniak]

👍👍 I've seen this in single use cups too, very handy!

[jameskapaun]

Those "lunch boxes" look amazing. I would take that over restaurant food or home cooked dinners.

[Kipp]

Just like an MRE that the US Military uses. Which can also be turned into a weapon that goes boom if needed.

[wasiqnadeem]

Thank you again for another informative video miss physics ☺️

[richlaue]

Years ago Wegmans sold coffee in self heating coffee cups. I tried one, it worked nicely

[duwaigimang]

Thank god for this vid, i've been wondering about this thing for quite a long time

[izzatihassan]

The first time I saw this is when my colleague bought a korean food during the pandemic because we can't dine in. It came to the office with the heating lunch box. So cool

[moonlitrondo]

Love your channel!! I always learn something new :D

[Garyescargo]

Calcium in all of its forms is so cool.

Water and calcium chloride give you a acetylene gas. Is that reaction also exothermic or does it just release the gas?

[FantasyYeet]

Is it hot enough make a cup noodle lol. Cause that would be a godsend for camping trips. All you need is water and no fire.

[Maybe.Its_You]

I watch dancing beacon just for this reason the different food and how it’s made is interesting ❤

[ferranferran]

They tried this with coffee in Europe ... 20? years ago and it didn't catch. I think I also saw it with soups.
Take care

[lennoxsiwale]

Lunchly could never compete with this💀

[sgvincent]

Could a similar reaction be used to make self-lighting cigarettes, like they have in Tad Williams’ “Otherland” sci-fi novels? I get that using water probably wouldn’t work, but how else might this happen?

[brenbry]

Ho-ly cow! I knew about bento boxes fairly recently, maybe about a couple years now. But I had /no/ idea some came with an ingenious method to warm it up. Simple, yet elegant.