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nirse commented on Basalt Woven Textile   materialdistrict.com/mate... · Posted by u/rbanffy
RantyDave · a month ago
Quite. I don't see why we need this in a world that already has Kevlar, Dyneema and Carbon.
nirse · a month ago
It seems to be more heat resistant?
nirse commented on First Successful Lightning Triggering and Guiding Using a Drone   group.ntt/en/newsrelease/... · Posted by u/gnabgib
dole · 8 months ago
This [1] article claims that the electricity from 115 strikes could power the entire US grid for a year, but it's surely napkin math. Awesome tech, though!

[1] https://www.treehugger.com/how-much-energy-is-in-lightning-8...

nirse · 8 months ago
Secondary school physics teacher here: The article is conflating power (watt or joule per second) and energy (joule or kilowatt-hour), so any claim they make is nonsense and the article shouldn't be taken seriously. My students make the same mistake all the time but they don't get to publish it :-)

Power is energy per time unit (thus: energy = power x time), so while the power of a lightning strike is very high (~10GW), the overall energy isn't because it only lasts for a very short duration (apparently the duration of a lightning event is hard to define, [1] says about 0,5 seconds, other places mention much shorter durations, ~10us). So if that 10GW lasts for 0,5 seconds, the total energy is 1,4MWh, which is 1/6 to 1/10 of the electrical energy an average American household consumes in a year[2].

[1] https://amt.copernicus.org/articles/16/547/2023/ [2] https://www.eia.gov/energyexplained/use-of-energy/electricit...

nirse commented on First Successful Lightning Triggering and Guiding Using a Drone   group.ntt/en/newsrelease/... · Posted by u/gnabgib
colechristensen · 8 months ago
that article does not make that claim
nirse · 8 months ago
I think it does:

Right at the bottom under Frequently Asked Questions:

  How much lightning would we need to capture to power the entire U.S. electricity grid?

  Merely capturing the energy from 115 lightning strikes would supply all of the U.S.'s annual electricity needs.

nirse commented on Bored of It   paulrobertlloyd.com/2025/... · Posted by u/NotInOurNames
luc4sdreyer · 9 months ago
Animals eat their disabled children. Humans should also do it then, since it's normal or natural.

Around 100k people die from age-related disease every day. I'd be careful to dismiss that as not a problem.

nirse · 9 months ago
I believe it would be a far greater problem if those people didn't die. Aging populations are a huge problem around the globe and unless we'd improve the quality of life to such a margin that octo- and nonagenarians are able to care for each other, I think we're all better off with people dying of old age.
nirse commented on Ask HN: Should we bring software dev in-house?    · Posted by u/45HCPW
intelVISA · a year ago
I'm gonna go against this heavily tbh:

If you don't have a 'trusted wrangler' freelancers won't build anything worthwhile as they're not interested in the long term unless forced.

There must be somebody you know, or friend of friend, to get a warm intro to an experienced developer you can pay to oversee said team on an interim basis. No consultants, agencies etc. they'll fleece a non-tech like you, save your money and drop it on somebody good who can actually help execute your vision.

nirse · a year ago
I work for a small company, around 10 devs. We've picked up quite a few projects over the years where a freelance team came in, built something and when the going got tough, walked away. That said, I've seen the same happen at renowned companies, so perhaps it's just an issue of generally people taking advantage of the shortage in experienced devs. I would aim to get some longer term stability, either by working with a company you trust through your network, or engage a tech Lead/CTO for a longer term who can oversee the contractors.
nirse commented on MPPP – The first 'designer drug' disaster (2023)   chm.bris.ac.uk/motm/mppp/... · Posted by u/aragonite
jamil7 · a year ago
3-MMC is huge in Europe at the moment, never tried it but would be a little wary of it as I haven’t found a lot of reliable information on it.
nirse · a year ago
This should be a reliable source on 3mmc, but it is in Dutch: https://www.trimbos.nl/aanbod/webwinkel/af1916-factsheet-3mm...
nirse commented on The Kimchi Masters of South Korea   nytimes.com/2024/07/16/di... · Posted by u/petethomas
hooverd · a year ago
Iodine doesn't matter. You do have to account for the difference in weight/volume vs table salt though.
nirse · a year ago
I've read somewhere that the iodine can negatively affect the fermentation process, so that it's better to use iodine free sea salt. Cant remember the source, though.
nirse commented on What would happen if a nuclear bomb went off in your backyard   outrider.org/nuclear-weap... · Posted by u/Bluestein
lazide · 2 years ago
Pro: cobalt-60 is really effective at getting rid of those pesky slugs and aphids.

Con: organ liquification and agonizing death.

A toss up really.

nirse · 2 years ago
I do _really_ hate the slugs in my garden
nirse commented on DuckDuckGo was down   duckduckgo.com... · Posted by u/jshupe
nirse · 2 years ago
Is it just me, or has DDG been having trouble often lately? Or is it just a combination with some outage + degradation of search results lately that makes me g! regularly these days? Didn't use to need that.
nirse commented on I couldn't escape poison oak, so I started eating it   wsj.com/style/eat-poison-... · Posted by u/hcrisp
jelliclesfarm · 2 years ago
I have read that the urushiol is also present in the skin of the mango fruit.

I don’t know if those who consume a lot of mangoes or have grown up with mango trees around them are immune to poison oak’s urushiol(arguably much more concentrated) as its present in stems, saps, leaves, skin more than the flesh..but they likely have more tolerance.

Also..in India, we don’t burn mango leaves or branches as it increases respiratory risks..which ..now that I think about it..is likely due to the urushiol

nirse · 2 years ago
My mom grew up in South Africa, '40s and '50s, she always made us wash our lips after eating mango to avoid a rash. Only later did I discover I didn't need to, I always assumed the rash-causing compound has been bred out of modern mangos.

u/nirse

KarmaCake day179May 9, 2018View Original