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Joined 1 year ago
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Cake day: July 16th, 2023

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  • The super simple explanation is that the wires are too small. The water hose analogy breaks down fairly quickly, but I’ll try using it. Imagine a garden hose, with a regular nozzle on the end. But it’s not a perfect world, and our hose doesn’t transfer all the water that goes into it. Think of this as ten pinprick holes along every meter of hose. If we have ten meters of hose, that’s fine, we only need to turn on the tap a little bit to get a decent spray out of the nozzle, and a little bit will dribble out these holes. Now let’s join another hose on. We lose more water to leakage, so to get the same amount of water out of our nozzle, we have to turn on the tap more, giving it a bit more water flow. Now, our pinprick holes are not just dribbling, they’re flowing freely. Now let’s take it to the extreme- we join a thousand garden hoses together, all leaking a little bit. We have to turn the tap on A Lot More, and suddenly our pinpricks are spraying a serious amount of water everywhere. Now imagine we use a bigger hose. Let’s take it to the extreme again and say it’s a big stormwater pipe. But the key part here is that it has the same amount of holes, ten pinpricks per meter. This way, we can get heaps more water down that pipe, more than enough to give that water nozzle everything it wants. Also, because our pressure can remain low, those pinpricks are only leaking a little bit, not spraying everywhere. This is getting pretty wordy and unwieldy to type out on my phone, so I’ll try and bring it into the real world a bit more. An electrical load, like a motor (say a compressor in a fridge, a circular saw, etc) is like to our nozzle. It will pull more current (amps, or water flow) to maintain the same amount of power output (water coming out of the nozzle). As we get a longer conductor, the voltage drop (pressure reduction due to water lost to the pinpricks) gets larger, and our voltage at the end of a conductor gets lower. Power = voltage * current, so if that voltage is lower, to get the same power we need more current. More current means more heating. More heat in a small cable means melting. Physics has a way out for us, thankfully! The thicker a cable is, the less voltage drop it has, kind of like our stormwater pipe. So the voltage remains at a normal level at the motor, and consequently the motor draws a normal amount of current. This is why longer extensions are generally a lot thicker than shorter ones. If you’re interested in the math, let me know, it’s actually pretty fascinating, and ties into why long distance power lines are all super high voltage, among many other things. The basic equations are also not too hard to work with.




  • I’ve got over a thousand in Space Engineers, although some of that is from leaving it on overnight to refine materials. Or possibly exiting the game, but forgetting to actually leave the main menu. Does Steam track time when the computer is asleep?

    But I’ve likely got close to ten times that number in Dwarf Fortress. I’ve been playing it off and on for close to a decade and a half now, and when I get into it whole days can just fly by.








  • Long standby shift at a hotel (think Hilton style). My employer (not the hotel) had a storage room that was just an old hotel room with all the fittings taken out- No bed or couch, just storage racks. I got super bored, took a nap in the old bathtub.

    The staff bathroom of an abandoned diner on top of a mountain in Japan. I was cycle touring, didn’t want to put up the tent if I could just go inside. The big windows and proximity to the road meant I didn’t want to be using a flashlight inside, so I went into the staff bathroom, no windows. Also no toilets or anything, just a bare tiled room. Weird place to sleep, but I went into the main area to make breakfast, it was an amazing view. Bonus for not getting the tent wet.



  • It starts with understanding what you’re spending money on. You can’t control what you don’t measure. Get some idea of what you are buying, be aware of the cost of things.

    Even if you don’t set down a full budget, you want to be able to go to the grocery store, say ‘x dollars is all I need to spend’ and then come out having spent less than that. If you don’t know how much you spend on an average shop, that won’t ever happen.

    Second to this is any purchase that is a ‘want’ above ‘y’ dollarydos, sleep on it. Steam sale? Put what you want in your cart. Is it more than twenty bucks? Ok, no problem, I’ll buy it tomorrow. Half the time you wake up and forget you ever wanted it. Sweet, money saved. Nice pair of shoes at the shop? Cool, I’ll come back tomorrow and try them on. Gives you a chance to find it elsewhere, cheaper.


  • I haven’t daily driven OSX for a few years now, but I still miss it every time I use a control panel on any other system. It’s so functional, intuitive, logical, consistent, and not a pile of dogshit to look at. If I want to change my IP address, I go to network, ethernet, IP address. If it’s greyed out, there is a lock icon right there. I click it, put in admin details, and then I can change the IP. All in the same window, in a consistent, logical flow.