Engineering

https://www.theatlantic.com/international/archive/2025/02/gaza-needs-clean-water/681583/?gift=43H6YzEv1tnFbOn4MRsWYpO-bjwfSYDowDDClZ3jHe0&utm_source=copy-link&utm_medium=social&utm_campaign=share The history of the pre-war systems, the struggles during the war, and some solutions hoped for after. From polluted aquifers to the salty sea. Innovative thinking is needed. Hydraulic engineering seems like a field that can only grow in importance in the coming years, all over the globe.

Don't know if this should be in the PHYSICS section or not I'm a digital animation student. I want to generate a video of what happened inside the passenger cabin of the Boeing 747, The Maid of the Seas (Pan-Am Flight103) when it exploded over Lockerbie Scotland at 31,000ft. What sort of physics would I need to map the event in realtime? 1. I've read that in a few milliseconds the explosion in the hold punched a 20" hole in the fuselage. This would cause an almost instant decompression of air exiting through the hole. Wikipedia says 0.1-0.5 seconds. Mathematically, how do I calculate exactly how fast in microseconds? 2.There are vents lining the …

I wonder if there're are tables of these in any book?

The Next Generation Bridge Table Thomas Walker 31 Dec 2024 Copy Right I have thought of this about 15 years back when the Computer Displays and Touch Functions were evolving The Table and Chairs set will be almost like the present setup Five Displays one Square Top and four matching rectangular side Panels which can be folded down for being visible to only that Player. Improvements can be made to make the side Panels Detachable to br held in hand On the Top Display Touch enabled Buttons for Deal Creation,Shuffle,Cut,Deal,Bidding Boxes,Storing Bids, Played Cards,Trick Counts etc enabled displayed and oriented according to Bridge Rules and a…

Good day. On top of a garden window I have, rain puddles on top and I placed a rag strip hanging over the edge. Works good; it wicks and drips to the point of emptying the puddle dry. Sort of a wick siphon. [ Image 1 below ] Can a wick pump water high within reason, to the point T and dripping at a lower wick point E well above the surface S ? [ image 2 above ] What are the limits ? Wick capillary properties ? Has anyone done it ? Is there a convenient type of wick material that is recommended/optimal for higher reach ?

Due to the recent bird strikes on jet engines. What if the intake of a jet engine has a weak laser barrier that cuts the birds into smaller pieces to comply to the standard digestion specifications to avoid large birds from damaging the blades. The lasers can be just enough to cover the intake, and turned off when the plane is above a higher altitude to avoid laser diversion due to atmospheric changes. Do you think this is an option?

The crash of an Azerbaijan Airlines Embraer E-190 civilian airliner in Kazakhstan on 25 December 2024 appears to have been a shoot-down caused by a Russian Pantsir - S1 (Панцирь-С1) type air-defence missile that detonated near the tail of the plane, destroying the hydraulic fluid reservoirs of all three sub-systems onboard. Shrapnel damage can be clearly seen in the tail section of the plane in a number of video clips of the crash site. https://www.youtube.com/watch?v=1J04wUKZUCI The loss of hydraulic line inputs to all flight control surfaces left the crew with no means of controlling the plane other than by using throttle levers to vary the thrust of the two …

I decided to stop using the wood-fired Rayburn last year and bought a portable (single-hose air-to-air) heat pump. There’s only me in the house and I spend evenings upstairs and just need to keep the room at 18º. I’m hoping someone here knows about heat pumps because I have a few questions. I read from https://www.theecoexperts.co.uk/heat-pumps/portable-heat-pumps: "Single hose portable heat pumps have one exhaust hose, which you stick out the window. The exhaust hose releases excess heat and moisture, while the heat pump absorbs air from inside the room, heats it, and releases it back into the room." I’m not sure what it means by “the exhaust hose releases exce…

Greetings. Is adding dry, pulverized-to-dust leaves a decent, beneficial way to fertilize soil for growing the same/other species that yielded those leaves ? Is there a non-industrial (not costly as for personal yard use) method to mill leaves to powder by converting/repurposing existing household appliances ? -Perhaps a clever modification for a discarded clothesdryer machine, a blender, a ...- A few cubic metres of leaves once or twice a year should do it.

Dear Members, It has never been possible to determine the elemental percent composition of multi component alloys of three or more metals from their densities alone using the Archimedes density method. It is because the multicomponent alloys constitute of underdetermined system of linear equations due to exceeding variables than the known values. On the other hand, they are always associated with infinite number of probable compositions, where determining correct composition with absolute certainty is not possible. Our family's 25-year long research journey has led to the development of the Density Decoding System (DDS), a revolutionary advancement in materials…

I am not too sure if this is the right forum category to share this. I happened upon this a few days ago and decided to share as it may be useful to anyone interested in the space station and developing projects to determine current location. This was posted to Phys.org Space station trajectory data now available https://phys.org/news/2024-12-space-station-trajectory.html Hopefully it is useful, I guess it will be useful for sites such as Heavens above ( https://www.heavens-above.com/ ), which does have details on when and where to look for the ISS Regards Paul

Hello. Did not see suggested or mandatory sharpening angle range to drill concrete/masonry/tiles. What would it be with widia tips ? ============================================================== (Pasted) --- > Drill sharpening angles refer to the angles formed between the cutting edges of a drill bit and the axis of the drill bit. The angles vary depending on the type of material being drilled and the specific purpose of the drill bit. It is important to choose the correct sharpening angle based on the material you are drilling to ensure that you achieve the desired results and prolong the life of your drill bit. Here are some of the most commo…

Hello all. I remember a flashlight in the early eighties designed for astronauts? with a near-zero self-discharge and with guarantee to work after stored for 10 years. Can you remember something about its name, chemistry...? Was sold as a 'high-end' gadget to fancy buyers to brag about it if they did not need a flashlight a decade later... I do not think batteries were removable nor replaceable. Looked like a stubby aluminium cylinder, took a couple of seconds to shine.

Addressing the Limitations of Thermal Protection Systems in Reusable Spacecraft: A Concept for an Ablative Shield with Integrated Air Pockets and Automated Repair The thermal protection system (TPS) has long been a critical factor in the design and operation of reusable spacecraft. The Space Shuttle, despite its pioneering role in reusable spaceflight, suffered significant challenges due to the complexity and maintenance demands of its heat shield tiles. These tiles, which protected the Shuttle from the intense heat of atmospheric reentry, were individually fragile, required precise positioning, and were highly susceptible to damage. Over time, the cost and labor-int…

Thousands of members of the Hezbollah militant group in Lebanon have been injured when handheld pagers they use to communicate with one another suddenly exploded without warning this afternoon. https://edition.cnn.com/world/live-news/lebanon-pagers-attack-hezbollah/index.html The wave of blasts in Beirut and other areas began around 15.45 local time (1345 GMT), causing mass panic and many hundreds of signficant injuries. The casualties reportedly include Mojtaba Amani, the Iranian ambassador to Lebanon. According to Reuters, Hezbollah spokesmen say the incident constitutes the biggest security breach of their communications infrastructure in the history of …

I think this is the right place to ask the question. There are many tips online about how to turn off the smoke alarm. But almost no one mentions there is a control near your door, which should be able to turn of the smoke alarm. I tried it once, did not work at all. Does the control work in your house?

If I were to have my way, I would build 1. safe 2. affordable 3. energy-efficient 4. green-renewable-energy-using 5. practical 6. comfortable 7. neatly-constructed 8. long-lasting 9. mechanically reliable 10. roomy 11. good-looking 12. solid 13. quiet 14. convenient-to-drive 15. American-built 16. low-maintenance automobiles, light-duty trucks, vans and sport-utility wagons for Americans mainly.

With airplanes they have to be both light and strong. That being the case, is it possible to make an airplane that's bulletproof? Can they make an airplane that's strong enough that bullets can't penetrate the fuselage?

Apparatus Full body Green Morph Suit Green Screen Cape 360 Degree Camera on top Operational The 360 degree Camera records Live footage at 60 frames per second It projects the Live feed to the Green Screen Cape Front of Camera projects to the back of the cape, back of the Camera projects to the front of the cape

Take it one step further. Have a Cloud generator machine in the Air generate Cumulonimbus clouds. Then, absorb the Lightning somehow.

Hi, We can't mathematically describe what happens when two generators(simple batteries ) in parallel power the same component with two different voltages, as anomalies arise in the study of this circuit(example U1=1v et U2=2v anomalie 1v=2v). In reality, one or both generators will stop functioning, and this circuit is forbidden in electronics because it can destroy the generators. But imagine that we replace the exact voltages of the two generators with two isolated moving magnets. What would happen to the magnets? Can we study the real behavior of a circuit powered by two different voltages in parallel from two moving magnets in this case, wi…

On Monday August 19 a luxury yacht called the Bayesian was sunk at anchor at Porticello near Palermo on the NE coast of Sicily by a freak storm that struck without warning at 4am in the morning. Violents winds of around 150 Km/hour and a large waterspout capsized the vessel which sank within 2 minutes according to eyewitnesses. Of the the 22 people onboard, six are still missing, including British tech magnate Mike Lynch and his daughter Hannah, along with Jonathan Bloomer (the CEO of US investment firm Morgan Stanley International) and his wife. Mike Lynch, a tycoon who was once hyped as the ‘British Bill Gates’ had only recently been acquitted in June on 16 counts…

I was thinking while i was playing my gameboy about screens without a backlight, and realized something. it might be possible to use an switchable glass panel (more about it here: https://www.cantifix.co.uk/blog/what-is-switchable-glass-and-how-does-it-work/#:~:text=In the most simple terms,it's very much a reality.) paired with a mirror behind it. in front of this would be a clear backlight & lcd panel. I honestly dont care if people take my idea, as long as they give credit. i just think it should exist... but maybe the reason it doesnt exist yet is because its stupid? idk, any ideas that might improve this or make this possible/exist just let me know. oh a…

I have an idea and I request information on how I can make playing cards that I can throw and they'd explode upon impact.

Hello all. While cooking or just boiling water in a glass pot, the water boils limited to 100C; does the steam above the liquid surface bombarded with microwave energy rises above 100C ? In other words, what happens exposing steam to microwaves ?