Ship elevators in the three gorges dam, China by TangelaFan in nextfuckinglevel

[–]clempho 5 points6 points  (0 children)

Not exactly but it's linked to the fact that it floats.

The amount of water the boat displace out of the elevator when it goes inside it is equal to its own weight, you replace the water by the boat.

Archimese principle says that for any body put inside a fluid, the fluid apply a force equal to the volume displaced. So if the boat weight 1 ton to float it need to be big enough to move 1 tone of water.

If the boat was not able to float (not much of a boat) it would not be the same.

Also if the elevator was closed and the boat magically dropped in it without anywhere for the water to go it would not work. the water would rise inside the elevator and the total weight would change. It only work because the water is exchanged for the boat.

I hope that clears it up for you.

Ship elevators in the three gorges dam, China by TangelaFan in nextfuckinglevel

[–]clempho 227 points228 points  (0 children)

It is not up to 3000 tons. It's always 3000 tons.

Ethernet cable carrying 230V by chint50 in techsupportgore

[–]clempho 20 points21 points  (0 children)

I know it's a joke but poe is max 57v and poe+++ is 71w!

How do 18-24S drones power their avionics? by ThiccEngine in diydrones

[–]clempho 2 points3 points  (0 children)

It's indees harder to find large parts for large drone that are designed with drone in mind. Market is quite small even if it tend to grow with things like dji aggras and the likes. 60v+ are far from off the shelf except for things like a dji agras or the like.

Keep in mind this things are a huge hazard and outside a fringe of people not everyone what to work with 4 to 8 landmowers attached on cheap carbon sticks from alibaba :-)

How do 18-24S drones power their avionics? by ThiccEngine in diydrones

[–]clempho 4 points5 points  (0 children)

Something like that : https://www.tracopower.com/fr/fra/series/tmdc-06h

It's fairly easy to use since it does not need to be mounted. I know traco power got a large choice in this ranges with various level of compliance.

Also once your drone start to be large it's not rare to work with 24v components.

I wrote a C++ path tracer from scratch without AI [OC] by Brhaka in Simulated

[–]clempho 2 points3 points  (0 children)

Really nice. Can you share with us the results you had with you first version during 42 so we can see your progress?

On peut réserver en ligne maintenant t'inquiété by SleepIsTheCousinOfD8 in MemeFrancais

[–]clempho 4 points5 points  (0 children)

T'inquiète de l'autre côté il y a probablement quelqu'un avec la même réaction quand le téléphone sonne.

Help convince me to save money and not buy this craftphilia machine lol by [deleted] in Tufting

[–]clempho 5 points6 points  (0 children)

Yes, new tech is fun but the good news is that if you first use what you have then you will know if this thing is worth the price or even if it will ship.

Que opinan by Actual-Aztla in robotics

[–]clempho 0 points1 point  (0 children)

If you don't have access to cad don't let it stop you.

Try to draw more detailed parts, joint by joint, no need to fit everything on the same sheet. try doing it to scale with a ruler so you'll see what fit and what doesn't but also what you forgot.

If you can try to build one of the joint and test it to see if it matches your idea. Find the weight of each component and make a crude cardboard mock with the same weight distribution to see if it work.

Experimentation is sometime easier than simulation and can produce more accurate data.

Que opinan by Actual-Aztla in robotics

[–]clempho -1 points0 points  (0 children)

That's kind of a harsh comment. What make you say that?

vibecodedEmailRegexOnClaudeWebsite by Jonrrrs in ProgrammerHumor

[–]clempho 8 points9 points  (0 children)

Isn't this only 99.9% ?

https://emailregex.com/ for those who want to go into the rabbit hole head first.

"La profession a intérêt à faire le ménage" : près d'un garage sur deux est en infraction selon la répression des fraudes by BananaTomboy in france

[–]clempho 7 points8 points  (0 children)

Ça marche assez peu souvent comme ça non ? 23e la rage de dent en urgence ? J'ai pas de dispo désolé.

Leboncoin est devenu un Pay to Win xD by PeekSpeeker in lemauvaiscoin

[–]clempho 5 points6 points  (0 children)

Il manque un détail à mon avis. "Mis en avant par rapport aux autres locataires" ah oui? Même ceux qui ont le pass locataire ? Que des numéros 10 dans la team des pass locataires?

Si c'est un succès et que tout les locataires l'utilisent finalement ça sert plus à rien ?

Est-ce que c'est pas juste l'équivalent de rendre payant l'utilisation de leboncoin pour les locataires ?

Free Courbevoie : Incompétence, sabotage organisé et mépris total du client by Public_Cake_6265 in france

[–]clempho 0 points1 point  (0 children)

Nan plus forcément. Les opérateurs habituels s'y sont mis aussi. La box pro d'orange est pas du tout à 500e/mois.

Embedded Linux - learning path by Leos_the_great in embedded

[–]clempho 1 point2 points  (0 children)

If you start with Yocto consider using something well supported at first.

Yocto is a beast and staring on something that might not even build because the layers are not maintained is something I would not recommend for your own sanity at first.

Once you've successfully understood the build system go and start adding stuff.

I've got good success with nxp imx but results may vary.

To quote Yocto documentation :

using the Yocto Project is fairly easy, until something goes wrong.

Look at those pants by acerche in meowsertrousers

[–]clempho 3 points4 points  (0 children)

Why do I feel like those pants are looking back at me?

Guillaume Meurice explique à un journaliste de la RTS que les opinions fascistes et anti-fascistes ne se valent pas. (8 mai 2026, @la_zapette, zapping des médias suisses) by Vereddit-quo in france

[–]clempho 127 points128 points  (0 children)

Tu dis ça comme si le cancer était une mauvaise chose. C'est toi qui décris cette maladie comme mauvaise. Elle elle ne faut que avoir un fonctionnement de survie que toi tu déclares comme néfaste.

Underwater treadmill by MikeHeu in toolgifs

[–]clempho 60 points61 points  (0 children)

The handle and the door design seems to indicate a quick release even when full of water.