Iron_Lynx
@Iron_Lynx@lemmy.world
- Comment on Help 2 weeks ago:
Try H
- Comment on Even better than a cart of apples 1 month ago:
With the previous ELI12 under control, let’s ELI>12 overhead line catenary a little more. For instance, why do you need tension in the first place?
Fact of the matter is that using a rigid conductor is problematic with high voltage AC (skin effect and such), plus it’s more visually intrusive than wires. Meanwhile, a wire will sag, regardless of how much tension you can practically apply. So you need a few devices to help keep the wire at height.
For one, the wire is supported every few dozen metres. Secondly, there’s a second wire strung above the first one. And while both wires are pulled taut, there are dropper wires between the upper and lower wires, which vary in length. Longer near the poles, while at the shortest near the middle between two poles, which creates a structure similar to a suspension bridge to keep the contact wire within a tight margin of vertical space.
- Comment on Even better than a cart of apples 1 month ago:
In case people don’t want to click a link, let me explain it here:
If you want to use overhead line electrification, you need to suspend a wire over the rails. In theory, you could simply hang up a wire, but whichever amount of tension you choose, if it’s warmer outside, the wire will droop, potentially causing damage, while if it’s colder outside, the wire will pull taut and may snap. So you want a system to account for external temperature.
Instead of picking a tension at a standard installation temperature, you pick an amount of desired tension and use weights to pull it taut. Now, if the wire heats up and extends, the weights drop, and if the wire cools down and contracts, the weights are pulled up.
And to keep the amount of weight you need to add under control, you use a series of pulleys to control the tension in the wire.
In NL, the mainline system looks a lot simpler: They have only one wheel, but that’s two pulleys: a larger one and a smaller one. The larger one holds the weight, while the smaller one holds the wires.
- Comment on Shiny 1 month ago:
(do it again now!)
Hard like heroic, more than you can handle - Comment on Culture Wars 2 months ago:
There are only two things or people that I don’t tolerate:
People intolerant of others’ ways of life…
And the Dutch.
…
Wait, I am Dutch 😨
- Comment on Tiny pp 2 months ago:
It must be a rule on the internet:
There’s always a relevant xkcd.
- Comment on Mushrooms 2 months ago:
… it’s very hard experimenting when you’ve no idea of potency or dosages.
This.
Fun thing I bumped int a few weeks ago: the guy who’s credited with inventing LSD tried a bit to see how it worked and how it felt. But he had no idea just how ridiculously potent LSD is. I forgot the exact numbers, but I do recall the ballpark. So he had a Fermi-estimated 100 μg while he only needed like 10 μg for a good time, so not only did he have the first known LSD trip, he had the first known bad trip.
- Comment on Capsaicin 2 months ago:
After reading this, for some reason, the phrase “cryogenic hellfire” lives rent-free in my brain.
- Comment on pump up the jamz 2 months ago:
I’m thinking There Is No Planet B by King Gizzard & the Lizard Wizard
- Comment on Colours of Blood 2 months ago:
Or at least by Big Penis Worm
- Comment on Please be patient. 2 months ago:
Sorry mate, Tom couldn’t make it, so here we have Bill.
Weather update: it’s raining rocks from outer space
- Comment on smart engineering 2 months ago:
Wonder what that’d look like to a layman. 1, 2, 3, 4, 5, 6, 7, 8, 9… Awesome? Beastly? Crushing? Deafening? Ear-shattering? Fuck that’s loud?
- Comment on smart engineering 2 months ago:
Relevant xkcd about these xkcd’s:
- Comment on PLAGIARISM 2 months ago:
If we’re going to assume the copyright of the body would rest with the first Homo Sapiens, that was tens of thousands of years ago, so even under Jamaican copyright (life of the author + 95 years), that’d be public domain.
Plagiarise away!
- Comment on Monke 2 months ago:
Mok
- Comment on Monke 2 months ago:
Awh.
~ brought to you by the Ornithologists & Car Enthusiasts United.
- Comment on Literally Nineteen Eighty-Four 2 months ago:
That’s one way to summarise what that number sequence is tied to.
- Comment on Literally Nineteen Eighty-Four 2 months ago:
Zero.
One.
Zero.
One.
One.
Zero.
Zero.
One. - Comment on xcoffee 2 months ago:
You watch the coffee pot.
- Comment on Honey 2 months ago:
Non vegan here. 🤔
Soooooo honey is not extracted directly from the bees, so that would be an argument to declare honey vegan.
On the other hand, even with modern beekeeping tech and modular hives, one could argue the act of taking honey to be a serious intrusion on the bees’ life, so that could be an argument that honey is not vegan.
One could argue where the line lies with eusocial organisms. Do you consider the individual bees or do you consider the whole hive? Whole hive? Honey may not be vegan. Individual insects? Honey could be vegan.
It really depends on your standards. One vegan friend of mine does drink mead (honey wine, for the uninformed) for instance.
- Comment on hard to argue with 2 months ago:
I have hands that can turn into fists. Does that mean I was created for hitting things?
This is your logic, woman!
- Comment on Effort require Effort 3 months ago:
Something tells me this is satire.
- Comment on I hate how anything without "world" in its name is just about the US 3 months ago:
Moerasduits. Is dat goed genoeg?
- Comment on I hate how anything without "world" in its name is just about the US 3 months ago:
Well, then have some proof:
G E K O L O N I S E E R D
- Comment on English Ivy 3 months ago:
Maybe it’s just me, but the second one in my brain gets voiced by LazerPig to the backing of Rule Britannia
- Comment on What's that light? 3 months ago:
Then it’s an artificial satellite. And, tbh, isn’t the ISS just a specific, very large artificial satellite?
- Comment on Oxygen 3 months ago:
It feels like a loading screen tip, and I’m scraping my head as to for what kind of game it would be the tip.
- Comment on Burning Up 4 months ago:
Forty-one sounds insanely hot as an outside temperature if that’s the standard you’re used to. And that’s the thing that the Fahrentards refuse to wrap their head around.
- Comment on me & him 4 months ago:
Male seahorses. Probably the most Omega species out there.
- Comment on Oh, the humanity! 4 months ago:
And the science gets done
