top 50 comments

sorted by: hot top controversial new old
[–] 181 points 11 months ago (18 children)

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

  • source
  • hideshow 18 child comments
  • [–] 92 points 11 months ago (7 children)

    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.

  • source
  • parent
  • hideshow 7 child comments
  • [–] 57 points 11 months ago (4 children)

    I would like to subscribe to lemon facts.

  • source
  • parent
  • hideshow 4 child comments
  • [–] 14 points 11 months ago (2 children)

    Lemon Facts

    Thank you for your interest in subscribing to Lemon facts. Here are some sample facts to get you started:

    • The lemon tree is evergreen of the family Rutaceae.
    • They are a hybrid of the bitter orange and citron.
    • The most common variety seen in supermarkets is 'Eureka', which fruits throughout the year.
    • Lemon juice is a natural cleaning agent. Mix with water and, optionally, vinegar for a handy glass cleaner.
    • Two lemons are enough to provide your recommended daily intake of vitamin c.

    You can subscribe to more Lemon Facts for just 10.99 per day! Please reply with your creditccard details to subscribe, or 'disagree' if you do not wish to subscribe at this time. We may retain your details to offer you the opportunity to subscribe to other lists in future.

  • source
  • parent
  • hideshow 2 child comments
  • load more comments (2 replies)
  • [–] 31 points 11 months ago (4 children)

    Like, in the middle of the fire? For how long? Wanna try it in the future

  • source
  • parent
  • hideshow 4 child comments
  • [–] 16 points 11 months ago (3 children)

    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

  • source
  • parent
  • hideshow 3 child comments
  • [–] 10 points 11 months ago (2 children)

    I need to try this. A full pineapple into the flames naked?

  • source
  • parent
  • hideshow 2 child comments
  • [–] 6 points 11 months ago

    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

  • source
  • parent
  • [–] 86 points 11 months ago (9 children)

    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.

  • source
  • hideshow 9 child comments
  • [–] 28 points 11 months ago

    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 🤷

  • source
  • parent
  • [–] 10 points 11 months ago

    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

  • source
  • parent
  • [–] 5 points 11 months ago (4 children)

    Aluminium doesn't glow, even when molten though?

  • source
  • parent
  • hideshow 4 child comments
  • [–] 3 points 11 months ago

    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.

  • source
  • parent
  • load more comments (1 reply)
    [–] 44 points 11 months ago (16 children)

    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.

  • source
  • hideshow 16 child comments
  • [–] 14 points 11 months ago (12 children)

    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.

  • source
  • parent
  • hideshow 12 child comments
  • [–] 19 points 11 months ago (10 children)

    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.

  • source
  • parent
  • hideshow 10 child comments
  • [–] 7 points 11 months ago (4 children)

    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.

  • source
  • parent
  • hideshow 4 child comments
  • load more comments (4 replies)
  • [–] 4 points 11 months ago (2 children)

    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.

  • source
  • parent
  • hideshow 2 child comments
  • [–] 3 points 11 months ago* (last edited 11 months ago) (1 child)

    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

  • source
  • parent
  • hideshow 1 child comment
  • load more comments (1 reply)
  • load more comments (1 reply)
  • [–] 4 points 11 months ago* (last edited 11 months ago)

    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

  • source
  • parent
  • load more comments (1 reply)
    [–] 35 points 11 months ago

    (Dragon does dragon stuff)
    Sir Pinappleus the Hawaiian: You absolute fool.

  • source
  • [–] 32 points 11 months ago (1 child)

    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.

  • source
  • hideshow 1 child comment
  • load more comments (1 reply)
    [–] 31 points 11 months ago

    "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!"

  • source
  • [–] 20 points 11 months ago

    so does this make my balls permanently sweet or what

  • source
  • [–] 16 points 11 months ago (1 child)

    The pineapple will be just fine the flesh touching the steam on the other side spread all over your body by the pineapple keeping it pressed against your skin on the other hand is going to have a nice chard bbq taste.

  • source
  • hideshow 1 child comment
  • [–] 12 points 11 months ago (1 child)
    load more comments (1 reply)
    [–] 11 points 11 months ago (2 children)

    Knights Of The Pineapple! Arise!

  • source
  • hideshow 2 child comments
  • [–] 8 points 11 months ago (6 children)

    Why was the pineapple discarded? They could have eaten it 😭

  • source
  • hideshow 6 child comments
  • load more comments (3 replies)
    [–] 7 points 11 months ago (2 children)

    Does it work when the skin is properly dried though? Armor would dry out over time.

  • source
  • hideshow 2 child comments
  • [+] 6 points 11 months ago* (last edited 8 months ago)
    [removed by mod]
  • source
  • load more comments
    view more: next ›