Engineering Definition and 996 Threads

Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad range of more specialized fields of engineering, each with a more specific emphasis on particular areas of applied mathematics, applied science, and types of application. See glossary of engineering.
The term engineering is derived from the Latin ingenium, meaning "cleverness" and ingeniare, meaning "to contrive, devise".

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  1. jedishrfu

    Student Recreates the Archimedes Death Ray

    Student Recreates the Archimedes Death Ray https://www.giantfreakinrobot.com/sci/ancient-death-ray-recreated.html
  2. mashmead

    Applied physics and systems analysis/engineering

    Be nice.
  3. R

    Addressing Source Credibility and Clarifying Guidelines for Engineering

    Just noticed (as a follow up of a recently terminated one) that many topics posted in 'Engineering' actually does not conform with the general rule about respectable sources, causing confusion. Sure, engineering has a way to say 'see? Works.' and it's totally (!) respected in the actual attitude...
  4. R

    Need Help with Aerodynamics Equations?

    Hi, I'm an aerospace engineering student in Turin. This semester, I have an aerodynamics class, and I need some help understanding some of the equations. I also really like physics and enjoy math and I think this forum can help me explore new and interesting topics, especially during times...
  5. T

    How Does Britain's New £140m 'DragonFire' Laser Transform Air Defense?

    New British LASER is one heck of an anti-aircraft gun! LIGHT-SAVER Britain blows up drones with £140m LASER dubbed ‘DragonFire’ in incredible first – with each shot costing just a tenner The futuristic laser can destroy a target from miles away with pin point accuracy... The highly focused...
  6. farispksalmanul

    How to reduce humidity through mist eliminator

  7. hya_t

    Calculating the inlet lengths of a fluid circulating in a pipe?

    TL;DR Summary: why do we need input length in fluid's dynamics What is the purpose of calculating the inlet lengths of a fluid circulating in a pipe? and how to calculate it correctly? why do we need it in engineering? This is for a class project where we are asked to calculate it and I think...
  8. Greg Bernhardt

    Engineering Award

    Please select up to 3 members who were most impactful in the engineering forums in 2023. This is a popular vote. Polls were created by weighing activity and measure of helpfulness. Everyone nominated should feel honored. Many more could be added to this poll, we can never realistically add...
  9. Abdullah A H

    Want to know if there are any particular sites for mechanical engineering for getting recommendable research papers

    where can I get best research papers for my undergrade thesis in Mechanical Engineering?
  10. berkeman

    Unusual Engineering Gadgets: Test Your Intuition and Share Your Pics!

    I saw this on Facebook today, and thought it might be a fun general thread for Engineering to post pics of things that made you stop and think about what they were designed for. I had to click into the FB post to see if my intuition was right on this one. Thoughts on this one? Do you have...
  11. bhobba

    Can Any Country Achieve Net Zero Without Nuclear?

    If you are lucky enough to have copious amounts of hydropower, you may be able to. But aside from that, I can't see how it can be done. In Australia, we have a policy of net zero by 2050, but it is beyond me how you can do it without nuclear. However, Australia has banned nuclear...
  12. N

    Help with final year uni course selection for defense and rocket industry

    TL;DR Summary: Help with final year courses that will help for defense and rocket industry. Hello , what extra courses would be best to help with knowledge in defense/rocket industry as a mechanical engineer in final year. I am going to do thermofluid specilisations for my final year and I am...
  13. Nik_2213

    Non-cryogenic separation of Helium_3 from Helium_4?

    IIRC, He_3 is usually separated from much less rare He_4 by cryogenic cooling of gas mix to 'liquid', at which point the mix divides to two phases, one with each isotope... IIRC, Hydrogen and Deuterium, as gas mix, may be progressively separated at near-ambient conditions by differential...
  14. J

    Make 2 launchers that shoot a straw with clay at the end

    TL;DR Summary: The goal of the project is to make 2 launchers that shoot a straw with clay at the end for weight. Here are the requirements: Performance Requirements Performance requirements (each launcher): Range Distance 1 - projectile must travel exactly 12 feet measured where it first...
  15. Tobi9242

    What is Mechanical Engineering at AAU?

    Hi! Studying Mechanical Engineering at AAU. First semester
  16. B

    Improving Engineering Math Skills: Tips and Resources for Self-Study

    Hi my names Bert I’m 23 and I want to get better at engineering math
  17. F

    Hello, everyone. I hope to continue to grow and learn on here.

    Mechanical Engineering working in the automotive industry with a desire for design and testing mechanical systems.
  18. J

    Engineering Get Expert Help with Your RLC Circuit Design | Easy Step-by-Step Guide

    I wrote them on the image
  19. M

    Engineering Producing Dry Saturated Steam in a Fire Tube Boiler

    Stuck with i & ii can somebody please guide me. none of my coursework material has anything similar in to help me work this one out.
  20. A

    What sparked your interest in astronomy and astrophysics?

    Well hello everyone, my name is Aaliya, I'm a first year engineering student and I have a passion for astronomy and astrophysics!!
  21. U

    Studying What universities for studying Aerospace Engineering in UK?

    I find that Oxford and Cambrige dont have aerospace engineering, only mechanical engineering/pathway aerospace. What do you think about that or is better to study "pure" aerospace? What university do you suggest? Also I checked that subjects are very different at each university.. I checked...
  22. Anisur Rahman

    Question about Source Probability in MCNP

    Here, SP stands for source probability. But probability needs to be normalized. Here values in SP3, SP4 are larger than 1, It means that SP is not ordinary probability here. But what actually SP represent here?
  23. N

    What is a Telecommunications Engineer?

    Hi I am Nav, I have studied a Bachelors Degree in Engineering and Physics. I have been working as a telecommunications engineers for the last 8 years. I am also a Physics tutor and need help time to time utilizing this forum. Thanks Hi I am Nav, I have studied a Bachelors Degree in Engineering...
  24. Ali sulieman

    How Can AI Tools Benefit Mechanical Engineering Students?

    I started studying mechanical engineering, where I started thinking about things that might make me a successful and highly competent engineer in the near future. Then I started searching through artificial intelligence tools for useful sites for me as a mechanical engineering student, and your...
  25. Controlling Turbulence and Evolution: How Engineers Overcome Uncertainty

    Controlling Turbulence and Evolution: How Engineers Overcome Uncertainty

    I am glad to see Bill Hammack "The Engineerguy" doing some more videos. This one shows examples of how engineers solve problems _before_ they have scientific certainty: How to control whether or not fluid flow is smooth or turbulent, and selecting enzymes.
    • scottdave
    • Media item
    • Engineering
    • Comments: 1
    • Category: Engineering
  26. Gunther_Guss

    Node analysis problem: 2 Current Sources and 3 Resistors

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  27. R

    Are electric cars over engineered?

    Why are cars so over engineered? A sled sliding down a set of tracks is much simpler than wheels. An aluminum tube with a slider fitted trough an open slit on top could be driven with a ,three phase coil built into the slider, to drive it forward or to stop. Three phase electric current from a...
  28. B

    Redneck Builder: Understanding Engineering Principles Without Formal Education

    I saw it was a responsive group and knew it would be helpful. No money to buy textbooks for formulas and Google is often maddeningly unhelpful or worse, misleading. Thanks in advance for your patience as I have ZERO formal education in the subject of physics and very little in engineering...
  29. J

    Hi - fascinated by theoretical physics with a engineering background

    I am curious about all things physics and would love to explore ideas here with like-minded people.
  30. D

    For fun: How big of a Microscope is needed to see a Planck Length?

    If you had--infinite--resources, material, manpower, energy, but only with current technology, or something that could be learned in a short time, how big of a microscope would it take to see a Planck Length? If there's a current limit, still with infinite resources, how small could you see and...
  31. C

    Programs What subject is better for an aspiring experimental physicist?

    I'm in my last 2 years of high school, and I have to pick a speciality to study before becoming an undergraduate and studying in college. In the future, I'm hoping to become an experimental physicist. My high school offers 3 specialities that are relevant to physics to pick from, all of them...
  32. DeBangis21

    Engineering Cadre: Engineer, Technologist, Technician, Artisan/Craftsman

    The Engineering Cadre: 1. Engineer 2. Technologist 3. Technician 4. Artisan/craftsman. Warm greetings, PF intellectuals. I would like to hear your insights about the ranking. The last have no qualification. What is/are the difference(s) between an engineer and a technologist? And who really...
  33. abdulhayee

    Admissions How to prove Physics competency to grad school admission committees?

    Greetings, This is a slightly longer post but it's coming from someone who's humbly and sincerely passionate+motivated about pursuing Physics and hence I'd be immensely grateful to everyone who can help me clear my confusions and see a ray of light and hope! You'd be doing me a solid :) My...
  34. A

    Sizing an Isolation Transformer for a DC Power Supply

    Good afternoon, How should an upstream isolation transformer be sized for a dc power supply? For example, if we have a power supply with the following specs: Input Voltage: 120 VAC Input Current: 2 Amps Inrush Current: 22 Amps Efficiency: 90% Power Factor: 0.55 Output Voltage: 24 VDC Output...
  35. S

    Motor Sizing for Wheel Endurance Testing

    I am working with a wheel endurance testing application. I am trying to size a motor for the system. Basically, I have a drum which has to be rotated by the motor. I have different size wheels that I have to test. The motor is supposed to rotate the drum and then the wheel is pushed onto the...
  36. D

    Search for specific near infrared transparent materials

    Hello everyone, I am looking for a material with the following characteristics: - It must be machinable - be as thermally insulating as possible, and resistant to a temperature of at least 100°C - transparent to near-infrared light (~1µm wavelength) - relatively resistant to deformation, for...
  37. DaveE

    An engineer's approach to the quadratic formula

    I stumbled across this article from decades past written by the best EE instructor I ever had. I thought it might be of some passing interest to others in highlighting the difference between memorizing a mathematical result vs. truly understanding it. The essence of engineering, in effect. We...
  38. S

    Other Wind Tunnel Research at a Community College

    I'm a student at a community college that was gifted a wind tunnel by a local uni. I'm leading a group of 5+ engineering / science students to refurbish and tune it. The testing chamber is around 12 x 5 x 5 inches, and we have free reign to do anything we'd like. We've had some ideas like...
  39. Gixer1127

    Engineering Calculating the mass of air in a pressurised air tank

    Hey folks, any help will be greatly appreciated. I have, what I thought, was a fairly simple equation to follow to determine the mass of air in a pressurised air tank. See below question and my attempt at solving using the pV = (m/Mr)RT) equation. A pressurised air tank supplies compressed air...
  40. amoonaa

    Admissions Should I Pursue a PhD in Physics with an Engineering Background?

    I have bachelors degree in electric engineering and masters in engineering management and 14 years of experience in software product development. So no experience in physics at all. Is it possible to do a phd in physics ? Its always been my passion that i now think about pursuing
  41. E

    Revisiting MCNP: Refreshing Skills for a New Job in Nuclear Engineering

    Hello, After some time away I've gotten back into MCNP. I've been in the field of Nuclear Engineering for over ten years, but I recently changed jobs and need to use MCNP. I'm trying to get my skills back up, since I haven't been using it as much in my old job. Looking forward to some great...
  42. S

    Engineering Bucket supported by wood frame and tension wire

    Attached is an image of the HW problem, included is a YouTube video I found for a solution. Assuming the solution shown is correct my question is about the rest of the system. I always approached problems from a top down "total system" perspective. Then try to isolate the portions of the system...
  43. Z

    What Can You Learn About Engineering on PhysicsForums?

    Hello I'm Mike. I'm a Mech Simulation Engineer. I am grateful with the help from this forum which directly solve my problem. Hope I can gain more engineering knowledge and experience, and also can help others. Best regards!
  44. Edy56

    Engineering Confused about defining unique current loops when using the node voltage method

    Please only respond if you know the node voltage method. I need to write equations for this circuit. My problem is that 1 has two paths towards 3, so when I write equations do I write both of those paths or only one. U30(1(-jXc1)+1/(jXl1+R1)+1/(jXl2)-U10((1/(-jXc1)+1/(R1+jXl1))-U20.... (the...
  45. Edy56

    Engineering Calculate voltage and temperature for this temperature-dependent resistor

    Is my work correct?
  46. Bozza36

    Engineering Intentional placement of additional mechanical loads in engineering

    Hello. My answer to this question would be something along the lines of the placement of additional loads can allow for structural testings to investigate forces, bending moments and shear stresses in order to optimise beam designs. However, is this what the question is asking?
  47. Ranger Mike

    Everything that they teach a M.E. major in university

    Upon completion you will know why cow magnets taped to your automobiles fuel line will add 2 to 5 miles per gallon fuel milage to any automobile! https://www.magnetsource.com/collections/cow-magnets-l1 but I digress!! this was a thing in the oil embargo in 1970s no shi#!
  48. dyah09

    Engineering Natural frequency of clamped-hinged column

    I have a column clamped at the bottom and for the top, I use hinged BC but free at the Y axis. I have the dimension and the material properties. How to calculate its natural frequency?
  49. K

    Engineering How Does Cup Anemometer Design Utilize Fluid Mechanics Principles?

    First, this class uses Frank White's Fluid Mechanics textbook. This particular problem is taken straight from chapter 7, which is on "Flow Past Immersed Bodies" and is basically focused on external flow, geometry effects, and boundary-layer conditions. So I imagine that the problem makes use of...
  50. L

    Engineering Solve Superposition Theorem for R1, R2 Circuit

    i have this question and i just want to make sure i am on the right track as i know there are quite a few steps to this to get to the final soultions i need to find Current at r1 voltage at r1 current at r2 voltage at r2 i have so far split this into 2 drawings so i am dealing with one power...
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