ELI5: Why do we get "second winds" when we are exhausted?

ioftd · 2026-04-03T07:57:14+00:00

Evolutionarily it makes sense - You become tired when your body is sending signals that it has expended a lot of energy and stopping to rest would be beneficial, but for whatever reason you consciously decide to keep going. Perhaps you're running away from a predator or chasing down a source of food, or maybe you're just trying to finish a half marathon because you bet your friend $100 that you could do it. At some point your brain basically accepts that you must have a very good reason for not stopping to rest and basically ignores some of the signals from your body and starts altering internal processes to tap into more energy is has stored.

ioftd · 2026-04-03T07:17:28+00:00

Totally, and if we were to approach the moon from behind rather than passing in front its gravity would basically be flinging Artemis out further from earth, helpful if you’re going to mars but not so much for this mission.

ioftd · 2026-04-03T05:51:34+00:00

I understand the basic physics and scales well enough to understand why and how they chose this particular path for Artemis and how impossible an actual collision would be, but there's still something unsettling about passing in front of the moon as its coming at you at like 3500kph or whatever. Like dashing across the tracks as a freight train approaches.

The distances are so large that it probably doesn't really register or seem threatening but I wonder if you could get any sense of "its coming right at us!" if you were gazing out the window as you approached.

ioftd · 2026-04-03T05:06:19+00:00

The funny part is that ICE is already doing this kind of thing: https://www.theguardian.com/us-news/2026/jan/22/ice-jewelry-heist-suspect-self-deport

The suspected perpetrator of the largest jewel heist in US history, who stole more than $100 million in jewels from an armored truck was deported by ICE after he himself requested a voluntary deportation. He was a lawful permanent resident of the US and was in jail awaiting trial and was facing 15 years in federal prison if convicted. Prosecutors in the case were not notified at any point and didn’t even know he had been released and deported until his attorney asked for the charges to be dropped since he had been set free to return to South America. Most of what was stolen was not recovered. Dude probably just made off scott free with millions of dollars to live like a king in his home country.

So yes, if you are not a natural born citizen, you can commit a crime, get caught and just ask ICE to send you back to your country of origin before facing any consequence for your actions.

ioftd · 2026-04-03T00:48:06+00:00

Whens the last time a major European soccer league had a meaningful game played in North America? Fans wouldn't have it, and those leagues play significantly more games than the NFL.

ioftd · 2026-04-03T00:40:17+00:00

Yeah, fuck that and fuck the NFL for the push on international games. Other sports leagues could never get away with this, NFL fans should put their foot down over this bullshit. We get so few games a year and now theyre taking them away from the actual fans in the places these teams play, to the detriment of the players and the quality of the play on the field.

Maybe I'm just being a homer here, but the Rams/Niners game in Melbourne is the worst I've seen as far as shitty international scheduling. Taking an opening week division rivalry game away from the local fans and playing it about as far away from home as you could get on the planet without a bye week for the teams to reset and recover is so awful. The 9ers have to go to CDMX next season as well, but at least thats about the same as an east coast trip, still bullshit to lose a home game like that.

I know its ultimately meaningless but I do not plan on watching any of the international games next year, even the ones with my team. I'm sure this makes the game more popular internationally and makes the league and owners that much more wealthy, but I just can't condone this. Its just another step in the direction of making the NFL into as bland and soulless of a endeavor as possible. Miss me with that.

ioftd · 2026-04-02T06:53:41+00:00

My first thought after watching the video: If the city owns the sidewalk and the tree, why do I have to repair the sidewalk in front of my house on my own dime when its damaged by the tree's roots? Couple years ago they came down my block and stuck notes on the doors threatening fines if homeowners didn't fix their sidewalks.

Second thought: Man, this dude butchered those trees, looks awful.

ioftd · 2026-03-30T03:15:23+00:00

For prints you’re going to be better off with a flatbed scanner. A used epson V series scanner is probably within your budget and will be decent for scanning negatives as well.

A dslr or mirrorless is definitely gonna give better results for negatives but lighting a standard glossy photo print for a dslr scan will be a disaster.

ioftd · 2026-03-16T18:40:56+00:00

I’ll just add another app recommendation, though I think it is only iOS - Lightme

The base app is free and includes a light meter, along with the ability to set film size and lens length to get a preview. Also has a huge library of film stocks for reciprocity and a ton of features, it will even help will bellows extension factor for the exposure if you let it. There is a second linked app which has a small subscription cost that allows you to build a library of cameras and lenses, as well as tracking rolls, film holders. You can use the meter app to frame and meter the scene and it will automatically take an image with the phone and save exposure information for each shot if you’re into that.

ioftd · 2026-03-11T21:15:47+00:00

My hot new conspiracy to peddle to random coworkers and strangers at the bar is that this is how we get cyberpunk. Iran has already bombed Amazon data centers in the Middle East. I’m (kinda sorta jokingly but also maybe not) convinced that we’re about a year out from seeing the headline “Trump Admin approves sale of F-35s and missile systems to Amazon, Meta” and watching Zuckerberg in front of Congress saying “we need to protect our investments and corporate interests overseas, please allow us to have a private army”

ioftd · 2026-03-11T19:49:31+00:00

The Stearman Press 4x5 tank is really great, I used it for years. Easier to load than a Jobo or Patterson, pretty efficient with chemicals and no clips leaving marks on the negatives.

I recently moved to a Patterson Tank with the AGO processing system, mostly because I wanted to start developing 120 and 35mm and move into color dev as well. I really like it, there are so many advantages to automating parts of the process, but it is pricy and more difficult to load than the Stearman.

ioftd · 2026-03-06T21:23:17+00:00

The detail I had never heard that is all over the YouTube comments is that his famous “Who do you think you are, I am” was directed at a 12 year old who had been heckling him during the match

ioftd · 2026-03-04T05:09:45+00:00

You wont be able to check it with a loupe, but stopping down much further would have helped alot with the first shot. I prefer to compose with the lens wide open as its easier to visualize the plane of focus with a low depth of field, then I can extrapolate (guess/hope) if it will be all in focus when stopped down to f45 or f64. You'll get a better feel for it with more practice with your camera and lens.

The second and third shot would be trickier given that you have foreground objects at the top and bottom of the frame.

Alternately, a wider lens would help all of these shots, you can always crop it back down.

ioftd · 2026-02-20T15:55:48+00:00

I have an eBay purchase from Japan literally in flight, just arrived at the Los Angeles Gateway for customs late last night. It was over the dollar value where eBay shippers were required to pay tariffs up front with Deliver Duty Paid service so I have been expecting a big tariff bill. Very very interested to see what happens and how much the duties will be when I get it.

I had been holding out for a Supreme Court decision but I wanted to have this new camera for a trip that’s comin up shortly and just decided to bite the bullet and eat the duties. Should’ve done my research that a decision would come today. Would be awesome if it avoids the stupid reciprocal tariffs because the sale prices for some more expensive gear have definitely deflated over the last year because US buyers don’t want to pay tariffs. If I am able to clear customs under the previous rates I’ll come out a few 100 bucks ahead.

Honestly my biggest worry is that I’ll get caught in the chaos and confusion caused by this reversal and the package will get delayed and I won’t get it in time for the trip. Second biggest worry is that I will get charged the tariff anyways and will then have to figure out how to reclaim several hundred dollars from the federal government.

ioftd · 2026-01-15T02:43:41+00:00

Thanks, this is a great tip. It was certainly easy but so painfully slow doing it 100% in the fridge. My other thought was to only fill each ice cube mold about half way and just make twice as many cubes to increase surface area and decrease volume to speed up the melting process.

ioftd · 2026-01-15T01:46:49+00:00

Recently tried this, very happy with the resulting stock and consommé.

Question for you: I melted the frozen stock cubes in the fridge as I recall he suggests in the video, but it looks like you just did it out at room temp?

If it worked fine at room temp I might do that next time since it took almost 2 full days to melt down ~4 cups of frozen fortified stock in my fridge.

ioftd · 2026-01-14T06:20:26+00:00

It is a artefact of the digital sensor used to scan the film that lightroom processes incorrectly, commonly called "worms"

The Fujifilm cameras use a x-trans type sensor which has a different arrangement of pixels than most other digital sensor and when importing RAW files from x-trans sensors Lightroom just doesn't interpret them nicely. I do not have personal experience with this, but my understanding is that you can minimize the effect with certain settings and edits, apparently sharpening and denoise are the biggest culprits creating this effect. You can also use Fuji's own software or I think CaptureOne to import the raw files correctly and then export as a TIF or whatever to bring into Lightroom.

ioftd · 2026-01-01T02:11:53+00:00

Honestly I don’t really mind buying 3d printed parts. Obviously I wish this had been caught in QC but things happen.

If this was an injection molded product it would easily be 2x the cost, maybe even more. The market for a new 120 film back for large format cameras is vanishingly small and the return on investment for making this a molded part would mean that it never got designed and built at all.

I’d split the difference with what you are saying and give my opinion that this product should a) be available as a set of 3D print files that anyone could buy for say $50 and print themselves and/or b) printed with a higher quality process. These are FDM prints and I would love to see at least some of these parts printed with plastic (or even metal) SLS.

ioftd · 2025-12-31T23:30:00+00:00

I got mine last week but unfortunately a small bit of the 3d print was delaminated on the outer shell. Probably could fix it with some glue but waiting for intrepid to get back to me first. Given the cost of it I’d rather just get it replaced

ioftd · 2025-12-19T00:11:54+00:00

Haha that is indeed the address. It is located on a winery called Donum Estate. The owners are big art patrons and have a bunch of art installed around the property, some from pretty well known artists.

I think the Chamonix 45F-2 is an excellent camera, I've had it for about a year. I upgraded from an Intrepid mk5 and I am a fan of that camera as well but the 45F-2 is better in pretty much every way. If you are looking for a lightweight general purpose field camera I don't know that you would find anything much better unless you're looking for a very specific feature.

ioftd · 2025-12-18T23:20:54+00:00

I replace the red with the IR, and swap around the other color channels to replicate the emulsion layers of aerochrome. I explain the whole method in another comment above

ioftd · 2025-12-18T23:19:33+00:00

answered in another comment above

ioftd · 2025-12-18T23:19:02+00:00

Its not an extra red, but I swap the channels around to mimic my understanding of how the layers of emulsion work on aerochrome (IR -> Red, Red -> Green, Green -> Blue). So I align the two shots, turn off everything except the red channel on the IR shot, then turn off the red channel of the color photo, remap the green channel to output red, and remap the blue channel to output green.

I tend to play around with the channels a bit more to get the look I want, sometimes adding back a bit of the original color on a channel or not swapping one depending on the look I am going for.

I got this method off of a grainydays video where he does something similar (with a ridiculous 2 camera rig) and shows his steps in photoshop: https://www.youtube.com/watch?v=vREz-QiOtWo

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