My friend calls pineapples 'Dragon Eggs' and tossed one into a bonfire. Pulled it out later to have the most delicious roasted sweet mythical egg ever
Sounds tasty. I can vouch for lemons undergoing a similar transformation. Wrap them in foil, seal it really well, and chuck them near a fire or bbq. They come out soft, sweet, and delicious.
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Before Maillard invented his reaction in 1912, you would have just gotten a burnt lemon
That was nice of him! Thanks, Maillard!
Like, in the middle of the fire? For how long? Wanna try it in the future
Tossed it in when the fire was at peak flame, and then waited for the wood to burn, the pineapple looked like a big piece of black coal
I need to try this. A full pineapple into the flames naked?
Pineapple can be naked, if anyone else is naked, I suggest not jumping into the flames
It works for breadfruit as well, my favourite way to cook it. You'd believe it has turned to charcoal, but no, the inside is like sweet bread fresh out the oven. I like to cut it in half and scoop it out with a spoon
Mother of pineapples
Roasted pineapple is delicious. Coat it on some brown sugar, roast it, then carve off the toasted bits. Repeat.
Isn’t the pineapple sweet enough that sugar could be omitted?
Look, I've got a sweet tooth.
1000°c seems accurate:
Fun little science fact: Heated objects glow the same colors no matter what they are made of. It's called Black Body Radiation. The color chart shows what temperatures correspond with various "colors" of glow.
Heated objects glow the same colors no matter what they are made of
True only if light emissions aren't dominated by chemical effects or filtered by structural effects. Plenty of materials burn at different colors. Although if you wait out the chemical reactions and keep it heated, it does eventually end up with just blackbody radiation too 🤷
But corrected by emissivity factor. Emissivity factor is also not constant, and changes as both a function of material and temperature. Probably associated with band gap fluctuating wrt. Temperature
Unless it is a gray body. For somewhat accurate measurements you must do math.
Aluminium doesn't glow, even when molten though?
That simply means it must melt below 600°C.
A quick wiki check says it melts at 660. I guess if you're in a really dark room, you could see the glow.
Real bodies are gray, not black.
All bodies matter.
Eventually will glow human eye visible if you keep heating it past useful temperatures. 1000'C+ starts getting red hot.
Doesn’t emit light as readily as iron does, especially with iron’s oxide layer building up when heated.
Related, but off topic.
If you ever visit Taiwan, be sure to eat the local pineapples. We have one of the sweetest pineapple and we eat the core of the pineapple. The core is actually crunchy, like the constancy of a crispy pear.
good to know
I've been watching Tech Ingredients search for the best shield material to test their Drone destroying extreme high power laser setup indoors for obvious reasons.
It turned out to be fruits/veggies. Nothing else came close. So he went with panels filled with thickened water.
That makes sense. The specific heat of water is a real bastard to overcome.
I'm personally skeptical of laser based weapons, given that they have one wavelength. once one is developed and deployed, it will be trivial to paint drones with a reflective paint specific for that wavelength.
The results is a nation investing 100s of millions on a weapon, that once deployed will be countered by 1000s $ of spray paint.
imagine if you could get a t-shirt that could deflect a any bullet. that's what still happen with laser based weapons.
I think that wouldn't necessarily work once you get to the right wavelengths for it to start interacting with the organic bases of the paints. There's only so much you can do when someone shoots an infrared laser at the resonant frequency of a C=C double bond.
Wasn't that 1500 whatever-the-unit-was? Below 1000 whatever-the-unit-was was the fingerprint bands, 3400ish whatever-the-unit-was was the O-H bonds, 3100ish whatever-the-unit-was was N-H bonds, 2900ish whatever-the-unit-was was the triple-to-C-H bonds, etc.
Ugh. The lab portion for that was so tedious. We would have to sketch the expected resonance patterns by hand for a bunch of different molecules. I loved the simplicity of the hydrogen bond nuclear resonance imaging so much more.
I never knew a disintegration ray was possible.
ups, made an integration ray instead, it does calculus on whatever you shoot
chemist was my weak point at uni. and I'm too tired to look that up, what's the frequency. I want to check if there are materials that can reflect it.
the coating doesn't have to be organic, a thin metallic coating might reflect the laser.
I'm not giving an expert opinions. but I'm personally betting that any laser weapon will be useless within weeks or days.
So, did a bit of research and, when you get to the scale of "a laser that can destroy objects", it turns out that the reflectance of natural materials is just utterly insufficient. Consider the following: suppose that a mirror finish reflects 90% of the light from a laser in the range you're looking at (a fair assumption, from what I've read). Now, let's do some basic back-of-the-napkin math: we'll use a 30 kW laser, which is apparently standard for current destructive laser weapons. Let's further assume that the laser light is spread over a surface area of 0.04 m^2 (because a spot 20 cm on a side seems to me a fairly high estimate for the spread on a precision laser, even on a moving target, if it's motion-tracked, I should think). Let us be generous and assume that this reflective paint coating is 0.5mm (0.0005m) thick. Given the paint's approximate specific heat of 2.302 J/gK (polyethylene) and density of 1400000 g/m^3 (PVC), and let's also assume the breakdown temp of the reflectance is near the boiling point of PVA (spray paint), which is 112C.
So, the mass of paint absorbing the energy is 0.04*0.0005*1400000=28 g.
To heat the entirety of these 28 g of this material by about 90C (from 22 to 112), completely destroying the protective layer, we would need 2.302*28*90 = 5801J
Now we know that we have 30000*0.9= 3000J/s, so it would take about 2 seconds of lancing to completely destroy the protection. Given that it already takes 2-5 seconds to destroy things with the laser, and it doesn't actually have to destroy the entire area for the reflectance to deteriorate and let the laser through, this would only be adding another second of work. I think that, no matter what you do, the laser's gonna win.
I can give sources for any of these estimates.
You know the actual reason why these things aren't on every military vessel? The lasers stop working if there's fog, dust or rain
Thanks for the numbers. it seems that paint coat is a good shield but not perfect.
I think monochromatic mirrors can reach 99.9% reflection.
There will be a arms race between stronger lasers and thicker stronger laser protection.
a silver coating on a water cool plate might be able to completely block a strong laser, but that might be too heavy for a drone.
We will see. Militaries are making laser based anti drone weapons, and anti aircraft weapons are expected "soon"
Green lasers seem popular
ooo, i never thought of using blue tape the way he does, to keep crumbs and shit off a surface i was going to be finishing/sealing later. that's a good idea
edit: also i guess if i show up to a protest strapped in cukes, you all now knnow why
"My armour is like tenfold shields, my teeth are swords, my claws spears, the shock of my tail is a thunderbolt, my wings a hurricane, and my breath death!...Wait, is that...pinapple skin armour?? Oh, shit, I'm so fucked!"
(Dragon does dragon stuff)
Sir Pinappleus the Hawaiian: You absolute fool.
so does this make my balls permanently sweet or what
Knights Of The Pineapple! Arise!
I hurt my knee; can I remain seated?
they said arise, not stand up. grab that little piston lever on the side of your seat and scooch upward an inch
Why was the pineapple discarded? They could have eaten it 😭
Don't worry. It's a black deck, so the graveyard is exactly where the pineapple wants to be.
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