Engineering Definition and 996 Threads

Hello! I am currently a chemical engineering major. I love all of my class but I am struggling in Physics

In the past was enginners/students draw directly with rapidograph or first with mechanical pencil and after that redraw everything with rapidograph? Is rapidograph good for writing or he works only in vertical position? Why rapidograph if we have ozalid machines?

Senior Scientist Aerospace engineering concentrating on mechanical and structural engineering analysis for space telescopes

Hello all I'm new here hopefully I can get some help with some engineering mathematics.

First I have seen a few forums dotted about covering this subject already, however I couldn't find exactly what I was looking for so I apologise if its somewhere on here already. I am trying to calculate the AFR value for pure ethanol. I am only including oxygen in the category of "air" due to...

I've come here to ask any future questions I have regarding physics, mathematics or engineering. Thank you very much.

Hello everyone, I heard about PF from Reddit. I'm a mechanical engineering enthusiast and looking forward to engaging with everyone here!

Hi. I am Hauzen from South Korea. I came here to gain a lot of engineering knowledge from this forum. I want to be a competent engineer with a lot of your help. I look forward to your kind cooperation :)

Hello everyone, I am curious, suppose you have a function ##f(x)=x^3## and you to find the area under the curve from 0 to x, the area would be ##\frac {x^4}{4}## but this is units of ##L^4## if x is length, but area is units of ##L^2## so what is going on here? The reason I'm curious is I...

I am passionate about physics and math and science, you've heard the story a million times. I don't know whether I should study in physics or engineering. I find the concept of Engineering Physics really cool. I've heard it still gives you the opportunity to go study graduate physics? (Lets...

Hi all, Mechanical engineer by education; soon to have a MPhil in Architecture. Building Scientist/ Energy Efficiency consultant by trade. I have a decent physics background, but not an expert around the subject of radiative heat transfer. My posts will likely involve confirming bs from...

Male in my twenties, enjoying hard problems in engineering, mathematics, and physics.

Hi there, Thank you for welcoming into your community. I completed a five year electrical control engineering college, then studied chemical engineering followed by a PhD in analytical chemistry. Since the last seven years I work in a role that involves chemical engineering and process...

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

Be nice.

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...

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...

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...

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...

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...

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

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...

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...

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...

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...

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...

Hi! Studying Mechanical Engineering at AAU. First semester

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

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

I wrote them on the image

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.

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

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...

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?

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...

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...

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.

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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...

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...

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

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...

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...

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...

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...

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...

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...

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...

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...