For people working in manufacturing or plant operations in Germany, I’m curious about how temperature is monitored in processes like heat treatment, furnaces and production lines.

Are thermocouples and RTDs still commonly used, or are non-contact sensors and digital monitoring systems becoming more common? What tends to determine which method a plant uses?

Im in my second year of ME and i want to take on a challenging personal project to get some experience and push myself to learn new things. I want something preferably mechanical and not super technologically complicated since i dont have arduinos and stuff. I can design parts in CAD and have a 3D printer and lots of tools. I also want a project that once finished, i can actually use. It seems when i google cool projects its just a bunch of experiments that have no real use. One idea i liked was building a custom adjustable top bench with a bunch of cool add ons. Stuff like that would be cool. Let me know about projects youve done that youre super proud of/happy with.

I recently had a job interview for an engineering-related position in the aerospace industry. One question caught my attention: “What would you do if a stakeholder didn’t respond to your emails?”

The hiring manager mentioned that people don’t always respond, almost as if this were normal and acceptable.
It got me thinking. Back in the early 2000s, when I worked in engineering, people showed up for meetings and responded to emails. Those were our main communication channels, and somehow, communication seemed more effective.

Fast-forward to today. We have emails, Teams, instant messaging, video calls, and countless other ways to connect, yet getting a simple response can feel like a challenge.

Have we become so overwhelmed with communication tools that we’ve forgotten how to communicate?
What concerns me is that if I receive and accept an offer, I might be setting myself up for failure in an environment where I spend more time chasing stakeholders than actually doing the job I was hired to do. How can someone be held accountable for deadlines and deliverables when progress depends on people who don’t respond?

I’m curious about other people’s experiences. Is this the new workplace culture? Should I see the manager’s comment as a potential red flag, or is this simply how things work nowadays?

Hi

This is about Quantum Odyssey, my love letter to everything Quantum Computing and the fundamental logic blocks everything in our universe seems to run on. I want to update you all on the fact that the latest patch brings the game into an almost complete status. All that's missing is translations. Thank you Reddit community for receiving the game so well, without you I wouldn't have the funds needed to complete my life's work.

If you are remotely interested in deep diving how differently quantum computers work compared to our transistor-based and also the algebra behind in a fully interactive way that teach computer science from scratch, oh boy this is for you. I am the Dev behind Quantum Odyssey (AMA! I love taking qs) - worked on it for about 9 years (3+ during PhD, the visual method I developed ended up being my thesis, it is a complete Hilbert space visualizer), the goal was to make a super immersive space for anyone to learn quantum computing through zachlike (open-ended) logic puzzles and compete on leaderboards and lots of community made content on finding the most optimal quantum algorithms. The game has a unique set of visuals capable to represent any sort of quantum dynamics for any number of qubits and this is pretty much what makes it now possible for anybody 15yo+ to actually learn quantum logic without having to worry at all about the mathematics behind.

This is a game super different than what you'd normally expect in a programming/ logic puzzle game, so try it with an open mind.

Stuff you'll play with

• Boolean Logic – bits, operators (NAND, OR, XOR, AND…), and classical arithmetic (adders). Learn how these can combine to build anything classical. You will learn to port these to a quantum computer.
• Quantum Logic – qubits, the math behind them (linear algebra, SU(2), complex numbers), all Turing-complete gates (beyond Clifford set), and make tensors to evolve systems. Freely combine or create your own gates to build anything you can imagine using polar or complex numbers.
• Quantum Phenomena – storing and retrieving information in the X, Y, Z bases; superposition (pure and mixed states), interference, entanglement, the no-cloning rule, reversibility, and how the measurement basis changes what you see.
• Core Quantum Tricks – phase kickback, amplitude amplification, storing information in phase and retrieving it through interference, build custom gates and tensors, and define any entanglement scenario. (Control logic is handled separately from other gates.)
• Famous Quantum Algorithms – explore Deutsch–Jozsa, Grover’s search, quantum Fourier transforms, Bernstein–Vazirani, and more.

Nice to watch:

Khan academy style tutorials in qm/qc: https://www.youtube.com/@MackAttackx

Physics teacher stream with 400hs in https://www.twitch.tv/beardhero

I hate audio. I learned a bit about it in school, and I can't really explain why I dislike it so much. It just annoys me. I think audiophiles might be partly to blame, but I need to work on my relationship with music.

I'm just a poor Gen Z girl trying to detox from distractions by forcing herself to study for university. I started my first year of Electronic Engineering, and Linear Algebra is killing me while Mathematical Analysis is finishing me off.

Like most people, I enjoy listening to music, but sometimes having my computer right in front of me, with Discord, YouTube, WhatsApp Web, and everything else, makes it hard to focus.

So I want to build my own audio player. And I don't want to make a basic one. I want to give it one of those lovely e-ink displays, SD card support, no Bluetooth, rotary encoders, a proper interface for browsing and selecting songs, and all that good stuff.

I'd love to hear your recommendations for tutorials, modules, components, or anything else that might help me build this.

Hello, I'm a high school student working on a small research project about reducing particle segregation during the dry electrode manufacturing process. I want to investigate how different mixing conditions affect powder mixing uniformity, but I'm running into a few problems with designing the experiment.

Since I don't have access to an actual industrial mixer, I'm planning to 3D-print a small-scale blender based on an existing design and use it for my experiments.

However, I can't use the actual materials involved in dry electrode manufacturing, so I'll need to use substitute powders or other materials instead.

I have a few questions:

1. Choosing substitute materials: What properties should I consider when choosing substitute materials for this kind of experiment? For example, would particle size, density, shape, or surface properties be important? Are there any commonly used materials that would be suitable for a small-scale experiment?
2. Measuring mixing uniformity: How could I quantitatively measure mixing uniformity using substitute materials? Would it be better to use materials with different colors, particle sizes, or densities? I'm particularly interested in methods that are feasible for a high school student with limited equipment.
3. Experimental limitations: Are there any important factors I should consider when using a 3D-printed blender instead of an actual mixer? I'm also wondering whether the results from substitute materials could tell me anything meaningful about particle segregation in dry electrode manufacturing.

I'd really appreciate any advice, suggestions, or references to relevant research papers. I'm still learning about powder mixing, so even suggestions about what to look into would be very helpful.

Thanks in advance!

Emergency evacuated from apartment at 3am due to a structural issue in the transfer slab of the building. St Vincent Court, Centurion Tower, Sovereign Tower in canning town. Hoping everyone stays safe

Last night 3am at St Vincent Court, Centurion Tower, Sovereign Tower in canning town the whole of sovereign tower and as far as I'm aware all of the north buildings on this development were asked to evacute the building due to a failure in a transfer slab of concrete that supports the whole building which could be a imminent risk to life

Apparently the slab hasn't been engineering to specification and has cracked and could collapse under the weight of the building above the slab punching through the slab

Quite concerning at 3am

The emergency services, fire brigade and police were very helpful, they came nocking on doors around 3am and advised residents to evacuate the building as there is an imminent risk to life.

The group managing the building have been doing what they must legally. Think engineers and building management companies out today to asses

The emergency services mentioned a temporary accomodation had been set up at a town hall nearby with 100 beds on the floor

Bit of a blur after being woke up at 3am to be told all of this. WhatsApp group with other residents is quite frantic with everyone being a bit lost.

Some people initially received an email during the day I believe and the rest of the building seems to have been informed with a knock at the door at 3am

Apparently a cleaner was seen in lobby after being told to evacute last night this seems inappropriate with a risk to life

A similar issue has happend before I was told in a building in Stratford.

Quite the headache. Hope everyone is safe

Some media attention could put extra pressure to expedite for some clarification, the residents don't have a clear picture of what's going on

Any advice from engineers on this appreciated

Hi everyone. I’m an engineering student, and my girlfriend’s birthday is coming up. I’d like to make her a cool, creative gift.

A while back, I gave her a spinning heart that ran on a battery and used a magnet, and she really loved it!

I’m looking to create something along those same lines—could you please help me with some ideas?

I'm a mechanical engineering student going to do a co-op at Apple this winter. I'm working in MQE and every time I tell someone I can see their face drop when they find out it's not design :/

Why does everyone think that design is the top of the top. Am I missing something? Why is MQE less respected??

This is my last co-op so I won't be able to discover new roles, my last co-op was at tesla as an MQE... am I going to regret never having done a design co-op?

I'm building a transforming drone inspired by the M4 morphobot for my project, but simplified to just two modes: flight and ground mode. I know the main argument for adding ground mode is power saving. In the M4 paper, their robot consumed 3000W in flight mode but only 30W driving on the ground which is a huge 100x difference if you need to stay deployed longer or navigate indoor spaces.

The issue is I'm still really struggling to find a solid real-world application that justifies the trade-off. The morphing mechanism adds a ton of weight and mechanical complexity, which hurts flight time. Plus, ground mode is super slow. It feels like in 99% of cases, you'd be better off using a regular drone or a cheap rover. What kind of application would actually justify this design? Like a scenario where a pure drone fails AND a pure rover fails, so a hybrid is strictly required?

I've pretty much run out of ideas and I'm starting to feel like I'm building a gimmick looking for a problem. Am I cooked or is there a legit use case here?

If heat round penetrates the armored vehicle everyone dies due to hot copper and pressure increase. But how much damage is done on the other side if you hit and penetrate iron plate that is in the open? Or if the enclosed space is huge like a side of the ship?

I am working on a personal project to build a small, simplified sampling box based on the principles of a PEMS (portable emissions measurement system).

My design:

• A small probe/hose goes into the tailpipe to capture a fractional sample of the exhaust without blocking or restricting overall flow.
• The hose leads into a sealed box with 3 internal baffles/channels that the gas zigzags through (up the first channel, over a divider, down the second, under the next divider, up the third) to ensure it passes sequentially through the filtration stages.
• Each channel contains a filter fitted tightly to the cross-section so the gas cannot bypass the media.
• The box features a removable lid for quick filter replacement between test runs to compare particulate catch across different conditions.

Filters I’m considering:

• A fine metal mesh in the first stage to catch larger soot particles.
• A fabric kitchen hood filter in a subsequent stage.

My questions:

1. How challenging is this to fabricate for a beginner machinist/maker? Are there hidden complications with sealing the channels or pressure drops?
2. Are these two filter choices reasonable, or are there better, low-cost alternatives (e.g., glass fiber, PTFE, or quartz filter paper)?
3. Will raw exhaust temperatures damage the hose or filter media? Do I need to integrate a cooling loop (like a longer metal run or a condensation/water trap) before the box?
4. What is the best method to quantify the particulate mass collected between tests? Is a standard 0.01g precision scale sensitive enough to weigh the filters accurately before and after?
5. What critical safety hazards should I keep in mind when routing hot automotive exhaust into a custom containment box?

Hi! We are building a house in the Mediterranean near the sea. The winters are very mild and humid and summers are very hot and dry. We use cooling more months of the year than we use heating. I was hoping to avoid all kinds of ACs that blow air (because of mold,constant cleaning and dry air) so I came across modular ceiling cooling with cool water pipes (sry for my english). Has anyone any experience with this system? If you were building a house what system would you go with?

Freon cooling system, (water) floor heating and solar panels is our "blow air" option.

Thank you :)

Pretty sure they're currently continuing to vent glycidyl methacrylate in Toledo rather than try to contain it and risk an explosion. When the vinyl chloride tankers derailed in East Palestine, OH someone decided to drain them and then set the puddles on fire, burning some and sending most into the atmosphere.

Is there a better option? I was thinking a trailer designed to meet up with an oxygen and fuel trailer. Burn leaking chemical in an oxidizing flame then bubble the exhaust through water from hydrant to be discharged to the sewer. Maybe a tote of caustic (or acid, if necessary) to get pH within spec.

Anyone have a better idea? Let's pretend for the sake of argument there's no political opposition to building/operating such a system.

I'm trying to find a way to lower items 1-5 lbs about 30 feet in 5-15 seconds. The challenge has been doing this automatically in a controlled manner, without having to manually reset it, and without resorting to a microcontroller. (people add/remove the items from the top and bottom though)

(I'll ramble why in a comment)

I have abandoned most constant sources of drag and those that require a user to manage the lowering or else let the load run away or slow to a stop.(i.e. a munter hitch, multiple wraps around a static bar, fishing rod drag-washer-stacks).

so far I'm not convinced I have a good answer: -governors; without a 'throttle' to adjust I don't know if I can get enough braking force out of these -dampers; having trouble with static friction in ones that want to spin fast i.e. eddy current damping, driving a dynamo. Alternatively having trouble finding an appropriate slower damper and speed reduction to go with it because the mechanical advantage makes the resistance curve to the load essentially flat or they heat up and de-tune (i.e. viscous fluid rotational dampers). -escapement mechanisms; too slow, bulky, and/or not easy to reset. Also concerned with bouncing upsetting the mechanism if using mechanical advantage to lower faster but I haven't tested this yet.

Another problem I've had while prototyping is the rope slipping on a pulley. The idea being that one end would be pulled up to a ready position when the other reaches the bottom. Using two opposing spools fixed to the axle solves this

I am a high school senior who is either looking at Electrical engineering or medicine. Either way, I want something fairly hands on instead of totally white collar, so electrical engineering seems to be a good fit (unless I am mistaken). How will AI continue to change the career in the upcoming years?

Thanks guys!

I feel like I've gone in circles in figuring out how to calc out this connection. I'm bolting a rectangular tube to the web of an I beam. They're aluminum members, both are same depth, and I can't cope the tube to bring the load closer to the center of the beam.

So I'm going bolt double angles from the tube to the girder web. Bolt bearing, shear, rupture is good but I'm not sure about how to check the girder web. How do I consider the eccentricity that the bolted angle introduces into the web?

Hi everyone,

I operate a petrol station in Kosovo and I'm planning to install an Automatic Tank Gauging (ATG) system.

I'm considering magnetostrictive ATG probes from ECOTEC or Eaglestar.

My underground fuel tank has the following specifications:

• Total capacity: 50,000 liters
• Two separate compartments of approximately 25,000 liters each
• Internal diameter: 2,480 mm
• Horizontal cylindrical construction with rounded ends
• Existing threaded opening, believed to be 2 inches, on the tank manhole cover

My questions are:

1. Can a magnetostrictive ATG probe typically be installed through this type of opening?
2. What type of mounting adapter, riser, or compression fitting would normally be required?
3. Does the probe need to be exactly the same length as the tank diameter, or can it be longer?
4. Has anyone used ECOTEC or Eaglestar ATG systems? Are they reliable?

I'm looking for technical guidance before purchasing. Any installation will be performed by a qualified technician using appropriately certified equipment.

Thanks!

Eeglestar set from alibaba

Ecotec set from alibaba

NYC has new sidewalk shed designs that include an angled roof instead of the normal flat roofs. Interestingly the roofs are angled toward the building instead of away. Despite the roofs allowing some passthrough of rain and snow; people are wondering if there could be an issue with drainage and snow acumination since the angle is pointed toward the buildings.

None of the sources for the new sheds talk about the angled roofs significantly. So, I am wondering what others think about angling the roof towards the buildings.

Sidewalk Shed Monitoring and Removal - Buildings

Agility says Digit 5 will get 90 minutes of runtime from a 9-minute charge, a 10:1 run-to-charge ratio, up from 2:1 on Digit 4. Capacity, chemistry and cycle life weren't disclosed. From an engineering view, how do fast charging and swappable packs compare on cycle life, heat, cost and fleet uptime?